./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.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-alloc-spinlock_drivers-net-usb-kaweth.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 104510927d9409ade9caf80490257750edc55f0d04f472d0e2cf5426e55ff4e4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:15:45,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:15:45,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:15:45,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:15:45,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:15:45,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:15:45,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:15:45,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:15:45,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:15:45,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:15:45,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:15:45,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:15:45,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:15:45,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:15:45,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:15:45,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:15:45,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:15:45,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:15:45,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:15:45,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:15:45,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:15:45,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:15:45,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:15:45,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:15:45,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:15:45,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:15:45,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:15:45,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:15:45,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:15:45,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:15:45,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:15:45,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:15:45,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:15:45,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:15:45,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:15:45,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:15:45,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:15:45,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:15:45,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:15:45,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:15:45,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:15:45,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:15:45,569 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:15:45,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:15:45,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:15:45,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:15:45,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:15:45,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:15:45,572 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:15:45,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:15:45,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:15:45,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:15:45,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:15:45,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:15:45,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:15:45,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:15:45,574 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:15:45,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:15:45,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:15:45,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:15:45,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:15:45,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:15:45,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:15:45,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:15:45,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:15:45,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:15:45,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:15:45,576 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:15:45,576 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:15:45,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:15:45,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:15:45,578 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 104510927d9409ade9caf80490257750edc55f0d04f472d0e2cf5426e55ff4e4 [2021-11-06 18:15:45,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:15:45,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:15:45,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:15:45,827 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:15:45,828 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:15:45,829 INFO L432 ainManager$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-alloc-spinlock_drivers-net-usb-kaweth.cil.i [2021-11-06 18:15:45,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f726b898/54eaeee65d5d4c54be3d3fa4806db034/FLAG2f4f00783 [2021-11-06 18:15:46,624 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:15:46,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i [2021-11-06 18:15:46,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f726b898/54eaeee65d5d4c54be3d3fa4806db034/FLAG2f4f00783 [2021-11-06 18:15:46,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f726b898/54eaeee65d5d4c54be3d3fa4806db034 [2021-11-06 18:15:46,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:15:46,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:15:46,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:15:46,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:15:46,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:15:46,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:15:46" (1/1) ... [2021-11-06 18:15:46,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36cbb52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:46, skipping insertion in model container [2021-11-06 18:15:46,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:15:46" (1/1) ... [2021-11-06 18:15:46,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:15:46,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:15:48,514 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-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307491,307504] [2021-11-06 18:15:48,517 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-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307636,307649] [2021-11-06 18:15:48,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:15:48,568 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:15:48,848 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-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307491,307504] [2021-11-06 18:15:48,848 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-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307636,307649] [2021-11-06 18:15:48,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:15:48,991 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:15:48,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:48 WrapperNode [2021-11-06 18:15:48,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:15:48,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:15:48,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:15:48,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:15:48,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:48" (1/1) ... [2021-11-06 18:15:49,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:48" (1/1) ... [2021-11-06 18:15:49,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:15:49,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:15:49,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:15:49,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:15:49,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:48" (1/1) ... [2021-11-06 18:15:49,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:48" (1/1) ... [2021-11-06 18:15:49,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:48" (1/1) ... [2021-11-06 18:15:49,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:48" (1/1) ... [2021-11-06 18:15:49,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:48" (1/1) ... [2021-11-06 18:15:49,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:48" (1/1) ... [2021-11-06 18:15:49,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:48" (1/1) ... [2021-11-06 18:15:49,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:15:49,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:15:49,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:15:49,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:15:49,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:48" (1/1) ... [2021-11-06 18:15:49,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:15:49,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:15:49,964 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 18:15:49,989 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 18:15:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 18:15:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:15:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:15:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:15:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:15:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:15:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:15:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 18:15:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:15:50,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:15:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:15:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:15:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:15:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:15:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:15:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:15:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-06 18:15:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:16:29,962 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:16:29,962 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:16:29,963 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:16:29,963 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:16:29,985 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:16:29,986 INFO L299 CfgBuilder]: Removed 2703 assume(true) statements. [2021-11-06 18:16:29,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:16:29 BoogieIcfgContainer [2021-11-06 18:16:29,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:16:29,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:16:29,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:16:29,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:16:29,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:15:46" (1/3) ... [2021-11-06 18:16:29,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2daf1d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:16:29, skipping insertion in model container [2021-11-06 18:16:29,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:48" (2/3) ... [2021-11-06 18:16:29,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2daf1d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:16:29, skipping insertion in model container [2021-11-06 18:16:29,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:16:29" (3/3) ... [2021-11-06 18:16:29,999 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i [2021-11-06 18:16:30,007 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:16:30,007 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2021-11-06 18:16:30,068 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:16:30,075 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 18:16:30,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2021-11-06 18:16:30,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 3189 states, 3130 states have (on average 1.4987220447284344) internal successors, (4691), 3188 states have internal predecessors, (4691), 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 18:16:30,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 18:16:30,167 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:16:30,168 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:16:30,169 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:16:30,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:16:30,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1107920357, now seen corresponding path program 1 times [2021-11-06 18:16:30,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:16:30,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945126506] [2021-11-06 18:16:30,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:16:30,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:16:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:16:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:16:31,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:16:31,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945126506] [2021-11-06 18:16:31,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945126506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:16:31,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:16:31,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:16:31,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149708090] [2021-11-06 18:16:31,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:16:31,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:16:31,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:16:31,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:16:31,044 INFO L87 Difference]: Start difference. First operand has 3189 states, 3130 states have (on average 1.4987220447284344) internal successors, (4691), 3188 states have internal predecessors, (4691), 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 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:16:33,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:16:33,726 INFO L93 Difference]: Finished difference Result 6757 states and 9925 transitions. [2021-11-06 18:16:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:16:33,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-06 18:16:33,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:16:33,751 INFO L225 Difference]: With dead ends: 6757 [2021-11-06 18:16:33,752 INFO L226 Difference]: Without dead ends: 3370 [2021-11-06 18:16:33,764 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 18:16:33,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2021-11-06 18:16:33,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3354. [2021-11-06 18:16:33,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3295 states have (on average 1.4370257966616085) internal successors, (4735), 3353 states have internal predecessors, (4735), 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 18:16:33,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4735 transitions. [2021-11-06 18:16:33,913 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4735 transitions. Word has length 60 [2021-11-06 18:16:33,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:16:33,913 INFO L470 AbstractCegarLoop]: Abstraction has 3354 states and 4735 transitions. [2021-11-06 18:16:33,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:16:33,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4735 transitions. [2021-11-06 18:16:33,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 18:16:33,918 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:16:33,918 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] [2021-11-06 18:16:33,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:16:33,919 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:16:33,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:16:33,921 INFO L85 PathProgramCache]: Analyzing trace with hash -580581691, now seen corresponding path program 1 times [2021-11-06 18:16:33,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:16:33,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927904142] [2021-11-06 18:16:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:16:33,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:16:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:16:34,427 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 18:16:34,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:16:34,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927904142] [2021-11-06 18:16:34,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927904142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:16:34,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:16:34,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:16:34,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712525770] [2021-11-06 18:16:34,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:16:34,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:16:34,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:16:34,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:16:34,432 INFO L87 Difference]: Start difference. First operand 3354 states and 4735 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 18:16:37,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:16:37,100 INFO L93 Difference]: Finished difference Result 9290 states and 13162 transitions. [2021-11-06 18:16:37,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:16:37,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2021-11-06 18:16:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:16:37,126 INFO L225 Difference]: With dead ends: 9290 [2021-11-06 18:16:37,128 INFO L226 Difference]: Without dead ends: 6004 [2021-11-06 18:16:37,139 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 18:16:37,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6004 states. [2021-11-06 18:16:37,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6004 to 5844. [2021-11-06 18:16:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5844 states, 5785 states have (on average 1.4487467588591183) internal successors, (8381), 5843 states have internal predecessors, (8381), 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 18:16:37,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5844 states to 5844 states and 8381 transitions. [2021-11-06 18:16:37,285 INFO L78 Accepts]: Start accepts. Automaton has 5844 states and 8381 transitions. Word has length 70 [2021-11-06 18:16:37,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:16:37,287 INFO L470 AbstractCegarLoop]: Abstraction has 5844 states and 8381 transitions. [2021-11-06 18:16:37,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 18:16:37,289 INFO L276 IsEmpty]: Start isEmpty. Operand 5844 states and 8381 transitions. [2021-11-06 18:16:37,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 18:16:37,291 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:16:37,291 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:16:37,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:16:37,293 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:16:37,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:16:37,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1725639997, now seen corresponding path program 1 times [2021-11-06 18:16:37,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:16:37,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779420260] [2021-11-06 18:16:37,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:16:37,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:16:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:16:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:16:37,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:16:37,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779420260] [2021-11-06 18:16:37,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779420260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:16:37,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:16:37,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:16:37,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956494013] [2021-11-06 18:16:37,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:16:37,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:16:37,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:16:37,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:16:37,641 INFO L87 Difference]: Start difference. First operand 5844 states and 8381 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 18:16:40,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:16:40,155 INFO L93 Difference]: Finished difference Result 17376 states and 24971 transitions. [2021-11-06 18:16:40,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:16:40,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2021-11-06 18:16:40,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:16:40,200 INFO L225 Difference]: With dead ends: 17376 [2021-11-06 18:16:40,201 INFO L226 Difference]: Without dead ends: 11600 [2021-11-06 18:16:40,218 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 18:16:40,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11600 states. [2021-11-06 18:16:40,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11600 to 11466. [2021-11-06 18:16:40,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11466 states, 11407 states have (on average 1.4537564653283073) internal successors, (16583), 11465 states have internal predecessors, (16583), 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 18:16:40,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11466 states to 11466 states and 16583 transitions. [2021-11-06 18:16:40,643 INFO L78 Accepts]: Start accepts. Automaton has 11466 states and 16583 transitions. Word has length 75 [2021-11-06 18:16:40,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:16:40,645 INFO L470 AbstractCegarLoop]: Abstraction has 11466 states and 16583 transitions. [2021-11-06 18:16:40,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 18:16:40,646 INFO L276 IsEmpty]: Start isEmpty. Operand 11466 states and 16583 transitions. [2021-11-06 18:16:40,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 18:16:40,648 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:16:40,649 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-06 18:16:40,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:16:40,650 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:16:40,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:16:40,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1416380071, now seen corresponding path program 1 times [2021-11-06 18:16:40,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:16:40,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724713586] [2021-11-06 18:16:40,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:16:40,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:16:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:16:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:16:41,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:16:41,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724713586] [2021-11-06 18:16:41,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724713586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:16:41,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:16:41,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:16:41,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106843764] [2021-11-06 18:16:41,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:16:41,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:16:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:16:41,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:16:41,039 INFO L87 Difference]: Start difference. First operand 11466 states and 16583 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 18:16:43,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:16:43,687 INFO L93 Difference]: Finished difference Result 23858 states and 34469 transitions. [2021-11-06 18:16:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:16:43,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 108 [2021-11-06 18:16:43,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:16:43,726 INFO L225 Difference]: With dead ends: 23858 [2021-11-06 18:16:43,726 INFO L226 Difference]: Without dead ends: 12460 [2021-11-06 18:16:43,751 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 18:16:43,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12460 states. [2021-11-06 18:16:44,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12460 to 12438. [2021-11-06 18:16:44,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12438 states, 12379 states have (on average 1.4464011632603604) internal successors, (17905), 12437 states have internal predecessors, (17905), 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 18:16:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12438 states to 12438 states and 17905 transitions. [2021-11-06 18:16:44,191 INFO L78 Accepts]: Start accepts. Automaton has 12438 states and 17905 transitions. Word has length 108 [2021-11-06 18:16:44,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:16:44,193 INFO L470 AbstractCegarLoop]: Abstraction has 12438 states and 17905 transitions. [2021-11-06 18:16:44,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 18:16:44,193 INFO L276 IsEmpty]: Start isEmpty. Operand 12438 states and 17905 transitions. [2021-11-06 18:16:44,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-06 18:16:44,199 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:16:44,200 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:16:44,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:16:44,200 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:16:44,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:16:44,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2048557782, now seen corresponding path program 1 times [2021-11-06 18:16:44,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:16:44,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424034465] [2021-11-06 18:16:44,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:16:44,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:16:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:16:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 18:16:44,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:16:44,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424034465] [2021-11-06 18:16:44,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424034465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:16:44,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:16:44,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:16:44,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40339868] [2021-11-06 18:16:44,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:16:44,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:16:44,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:16:44,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:16:44,660 INFO L87 Difference]: Start difference. First operand 12438 states and 17905 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 18:16:45,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:16:45,231 INFO L93 Difference]: Finished difference Result 24808 states and 35734 transitions. [2021-11-06 18:16:45,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:16:45,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 157 [2021-11-06 18:16:45,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:16:45,270 INFO L225 Difference]: With dead ends: 24808 [2021-11-06 18:16:45,270 INFO L226 Difference]: Without dead ends: 12438 [2021-11-06 18:16:45,291 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:16:45,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12438 states. [2021-11-06 18:16:45,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12438 to 12438. [2021-11-06 18:16:45,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12438 states, 12379 states have (on average 1.426528798772114) internal successors, (17659), 12437 states have internal predecessors, (17659), 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 18:16:45,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12438 states to 12438 states and 17659 transitions. [2021-11-06 18:16:45,683 INFO L78 Accepts]: Start accepts. Automaton has 12438 states and 17659 transitions. Word has length 157 [2021-11-06 18:16:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:16:45,684 INFO L470 AbstractCegarLoop]: Abstraction has 12438 states and 17659 transitions. [2021-11-06 18:16:45,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 18:16:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 12438 states and 17659 transitions. [2021-11-06 18:16:45,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-06 18:16:45,688 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:16:45,691 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:16:45,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:16:45,692 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:16:45,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:16:45,692 INFO L85 PathProgramCache]: Analyzing trace with hash -918977778, now seen corresponding path program 1 times [2021-11-06 18:16:45,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:16:45,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108650353] [2021-11-06 18:16:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:16:45,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:16:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:16:46,189 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 18:16:46,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:16:46,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108650353] [2021-11-06 18:16:46,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108650353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:16:46,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:16:46,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:16:46,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969885385] [2021-11-06 18:16:46,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:16:46,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:16:46,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:16:46,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:16:46,191 INFO L87 Difference]: Start difference. First operand 12438 states and 17659 transitions. Second operand has 4 states, 4 states have (on average 37.5) 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) [2021-11-06 18:16:47,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:16:47,287 INFO L93 Difference]: Finished difference Result 24808 states and 35242 transitions. [2021-11-06 18:16:47,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:16:47,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) 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) Word has length 158 [2021-11-06 18:16:47,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:16:47,317 INFO L225 Difference]: With dead ends: 24808 [2021-11-06 18:16:47,318 INFO L226 Difference]: Without dead ends: 12438 [2021-11-06 18:16:47,339 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 18:16:47,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12438 states. [2021-11-06 18:16:47,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12438 to 12438. [2021-11-06 18:16:47,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12438 states, 12379 states have (on average 1.4066564342838679) internal successors, (17413), 12437 states have internal predecessors, (17413), 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 18:16:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12438 states to 12438 states and 17413 transitions. [2021-11-06 18:16:47,777 INFO L78 Accepts]: Start accepts. Automaton has 12438 states and 17413 transitions. Word has length 158 [2021-11-06 18:16:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:16:47,778 INFO L470 AbstractCegarLoop]: Abstraction has 12438 states and 17413 transitions. [2021-11-06 18:16:47,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) 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) [2021-11-06 18:16:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 12438 states and 17413 transitions. [2021-11-06 18:16:47,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-06 18:16:47,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:16:47,782 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:16:47,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 18:16:47,785 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:16:47,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:16:47,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1576849329, now seen corresponding path program 1 times [2021-11-06 18:16:47,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:16:47,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726436747] [2021-11-06 18:16:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:16:47,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:16:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:16:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 18:16:48,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:16:48,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726436747] [2021-11-06 18:16:48,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726436747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:16:48,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:16:48,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:16:48,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674695424] [2021-11-06 18:16:48,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:16:48,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:16:48,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:16:48,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:16:48,261 INFO L87 Difference]: Start difference. First operand 12438 states and 17413 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 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 18:16:49,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:16:49,534 INFO L93 Difference]: Finished difference Result 24808 states and 34750 transitions. [2021-11-06 18:16:49,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:16:49,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 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 159 [2021-11-06 18:16:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:16:49,558 INFO L225 Difference]: With dead ends: 24808 [2021-11-06 18:16:49,559 INFO L226 Difference]: Without dead ends: 12438 [2021-11-06 18:16:49,577 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 18:16:49,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12438 states. [2021-11-06 18:16:49,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12438 to 12438. [2021-11-06 18:16:49,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12438 states, 12379 states have (on average 1.3867840697956215) internal successors, (17167), 12437 states have internal predecessors, (17167), 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 18:16:49,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12438 states to 12438 states and 17167 transitions. [2021-11-06 18:16:49,892 INFO L78 Accepts]: Start accepts. Automaton has 12438 states and 17167 transitions. Word has length 159 [2021-11-06 18:16:49,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:16:49,892 INFO L470 AbstractCegarLoop]: Abstraction has 12438 states and 17167 transitions. [2021-11-06 18:16:49,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 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 18:16:49,893 INFO L276 IsEmpty]: Start isEmpty. Operand 12438 states and 17167 transitions. [2021-11-06 18:16:49,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-06 18:16:49,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:16:49,895 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:16:49,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 18:16:49,896 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:16:49,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:16:49,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1638227273, now seen corresponding path program 1 times [2021-11-06 18:16:49,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:16:49,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109542742] [2021-11-06 18:16:49,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:16:49,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:16:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:16:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 18:16:50,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:16:50,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109542742] [2021-11-06 18:16:50,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109542742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:16:50,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:16:50,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:16:50,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84548803] [2021-11-06 18:16:50,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:16:50,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:16:50,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:16:50,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:16:50,311 INFO L87 Difference]: Start difference. First operand 12438 states and 17167 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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 18:16:52,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:16:52,943 INFO L93 Difference]: Finished difference Result 35936 states and 49507 transitions. [2021-11-06 18:16:52,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:16:52,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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 160 [2021-11-06 18:16:52,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:16:53,005 INFO L225 Difference]: With dead ends: 35936 [2021-11-06 18:16:53,006 INFO L226 Difference]: Without dead ends: 23566 [2021-11-06 18:16:53,031 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 18:16:53,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23566 states. [2021-11-06 18:16:53,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23566 to 13134. [2021-11-06 18:16:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.3639005736137668) internal successors, (17833), 13133 states have internal predecessors, (17833), 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 18:16:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 17833 transitions. [2021-11-06 18:16:53,680 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 17833 transitions. Word has length 160 [2021-11-06 18:16:53,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:16:53,680 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 17833 transitions. [2021-11-06 18:16:53,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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 18:16:53,680 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 17833 transitions. [2021-11-06 18:16:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-06 18:16:53,683 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:16:53,683 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:16:53,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 18:16:53,686 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:16:53,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:16:53,687 INFO L85 PathProgramCache]: Analyzing trace with hash -753874804, now seen corresponding path program 1 times [2021-11-06 18:16:53,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:16:53,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155294124] [2021-11-06 18:16:53,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:16:53,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:16:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:16:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 18:16:54,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:16:54,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155294124] [2021-11-06 18:16:54,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155294124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:16:54,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:16:54,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:16:54,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722255153] [2021-11-06 18:16:54,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:16:54,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:16:54,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:16:54,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:16:54,103 INFO L87 Difference]: Start difference. First operand 13134 states and 17833 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 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 18:16:55,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:16:55,410 INFO L93 Difference]: Finished difference Result 26200 states and 35590 transitions. [2021-11-06 18:16:55,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:16:55,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 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 161 [2021-11-06 18:16:55,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:16:55,444 INFO L225 Difference]: With dead ends: 26200 [2021-11-06 18:16:55,444 INFO L226 Difference]: Without dead ends: 13134 [2021-11-06 18:16:55,464 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:16:55,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-06 18:16:55,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-06 18:16:55,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.3450860420650095) internal successors, (17587), 13133 states have internal predecessors, (17587), 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 18:16:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 17587 transitions. [2021-11-06 18:16:55,885 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 17587 transitions. Word has length 161 [2021-11-06 18:16:55,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:16:55,885 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 17587 transitions. [2021-11-06 18:16:55,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 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 18:16:55,886 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 17587 transitions. [2021-11-06 18:16:55,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-06 18:16:55,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:16:55,888 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:16:55,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 18:16:55,889 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:16:55,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:16:55,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1894446204, now seen corresponding path program 1 times [2021-11-06 18:16:55,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:16:55,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726697779] [2021-11-06 18:16:55,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:16:55,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:16:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:16:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 18:16:56,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:16:56,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726697779] [2021-11-06 18:16:56,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726697779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:16:56,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:16:56,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:16:56,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865128630] [2021-11-06 18:16:56,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:16:56,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:16:56,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:16:56,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:16:56,429 INFO L87 Difference]: Start difference. First operand 13134 states and 17587 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 18:16:57,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:16:57,468 INFO L93 Difference]: Finished difference Result 26200 states and 35098 transitions. [2021-11-06 18:16:57,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:16:57,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 162 [2021-11-06 18:16:57,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:16:57,493 INFO L225 Difference]: With dead ends: 26200 [2021-11-06 18:16:57,494 INFO L226 Difference]: Without dead ends: 13134 [2021-11-06 18:16:57,516 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 18:16:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-06 18:16:58,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-06 18:16:58,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.3262715105162524) internal successors, (17341), 13133 states have internal predecessors, (17341), 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 18:16:58,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 17341 transitions. [2021-11-06 18:16:58,044 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 17341 transitions. Word has length 162 [2021-11-06 18:16:58,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:16:58,045 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 17341 transitions. [2021-11-06 18:16:58,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 18:16:58,045 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 17341 transitions. [2021-11-06 18:16:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-06 18:16:58,048 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:16:58,048 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 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 18:16:58,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 18:16:58,049 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:16:58,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:16:58,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1402695015, now seen corresponding path program 1 times [2021-11-06 18:16:58,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:16:58,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478508682] [2021-11-06 18:16:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:16:58,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:16:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:16:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 18:16:58,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:16:58,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478508682] [2021-11-06 18:16:58,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478508682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:16:58,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:16:58,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:16:58,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577717545] [2021-11-06 18:16:58,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:16:58,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:16:58,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:16:58,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:16:58,459 INFO L87 Difference]: Start difference. First operand 13134 states and 17341 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 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 18:16:59,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:16:59,672 INFO L93 Difference]: Finished difference Result 26200 states and 34606 transitions. [2021-11-06 18:16:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:16:59,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 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 163 [2021-11-06 18:16:59,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:16:59,697 INFO L225 Difference]: With dead ends: 26200 [2021-11-06 18:16:59,697 INFO L226 Difference]: Without dead ends: 13134 [2021-11-06 18:16:59,716 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 18:16:59,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-06 18:17:00,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-06 18:17:00,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.3074569789674952) internal successors, (17095), 13133 states have internal predecessors, (17095), 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 18:17:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 17095 transitions. [2021-11-06 18:17:00,107 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 17095 transitions. Word has length 163 [2021-11-06 18:17:00,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:00,107 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 17095 transitions. [2021-11-06 18:17:00,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 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 18:17:00,108 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 17095 transitions. [2021-11-06 18:17:00,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-06 18:17:00,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:00,110 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 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 18:17:00,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 18:17:00,111 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:17:00,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:00,111 INFO L85 PathProgramCache]: Analyzing trace with hash 535006655, now seen corresponding path program 1 times [2021-11-06 18:17:00,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:00,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965037833] [2021-11-06 18:17:00,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:00,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:00,526 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 18:17:00,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:00,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965037833] [2021-11-06 18:17:00,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965037833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:00,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:00,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:17:00,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749823792] [2021-11-06 18:17:00,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:17:00,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:00,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:17:00,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:17:00,528 INFO L87 Difference]: Start difference. First operand 13134 states and 17095 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 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 18:17:01,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:17:01,734 INFO L93 Difference]: Finished difference Result 26200 states and 34114 transitions. [2021-11-06 18:17:01,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:17:01,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 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 164 [2021-11-06 18:17:01,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:17:01,752 INFO L225 Difference]: With dead ends: 26200 [2021-11-06 18:17:01,753 INFO L226 Difference]: Without dead ends: 13134 [2021-11-06 18:17:01,771 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 18:17:01,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-06 18:17:02,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-06 18:17:02,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.2886424474187381) internal successors, (16849), 13133 states have internal predecessors, (16849), 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 18:17:02,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 16849 transitions. [2021-11-06 18:17:02,245 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 16849 transitions. Word has length 164 [2021-11-06 18:17:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:02,246 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 16849 transitions. [2021-11-06 18:17:02,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 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 18:17:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 16849 transitions. [2021-11-06 18:17:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-06 18:17:02,249 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:02,249 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 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 18:17:02,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 18:17:02,249 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:17:02,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:02,250 INFO L85 PathProgramCache]: Analyzing trace with hash -593379774, now seen corresponding path program 1 times [2021-11-06 18:17:02,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:02,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035663260] [2021-11-06 18:17:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:02,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 18:17:02,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:02,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035663260] [2021-11-06 18:17:02,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035663260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:02,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:02,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:17:02,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53947674] [2021-11-06 18:17:02,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:17:02,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:02,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:17:02,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:17:02,624 INFO L87 Difference]: Start difference. First operand 13134 states and 16849 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 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 18:17:03,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:17:03,813 INFO L93 Difference]: Finished difference Result 26200 states and 33622 transitions. [2021-11-06 18:17:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:17:03,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 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 165 [2021-11-06 18:17:03,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:17:03,830 INFO L225 Difference]: With dead ends: 26200 [2021-11-06 18:17:03,830 INFO L226 Difference]: Without dead ends: 13134 [2021-11-06 18:17:03,842 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 18:17:03,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-06 18:17:04,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-06 18:17:04,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.2698279158699808) internal successors, (16603), 13133 states have internal predecessors, (16603), 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 18:17:04,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 16603 transitions. [2021-11-06 18:17:04,310 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 16603 transitions. Word has length 165 [2021-11-06 18:17:04,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:04,311 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 16603 transitions. [2021-11-06 18:17:04,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 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 18:17:04,311 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 16603 transitions. [2021-11-06 18:17:04,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-06 18:17:04,313 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:04,313 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 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 18:17:04,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 18:17:04,313 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:17:04,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:04,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1213471750, now seen corresponding path program 1 times [2021-11-06 18:17:04,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:04,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585187480] [2021-11-06 18:17:04,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:04,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 18:17:04,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:04,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585187480] [2021-11-06 18:17:04,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585187480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:04,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:04,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:17:04,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095333972] [2021-11-06 18:17:04,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:17:04,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:04,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:17:04,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:17:04,675 INFO L87 Difference]: Start difference. First operand 13134 states and 16603 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 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 18:17:06,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:17:06,084 INFO L93 Difference]: Finished difference Result 26200 states and 33130 transitions. [2021-11-06 18:17:06,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:17:06,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 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 166 [2021-11-06 18:17:06,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:17:06,099 INFO L225 Difference]: With dead ends: 26200 [2021-11-06 18:17:06,099 INFO L226 Difference]: Without dead ends: 13134 [2021-11-06 18:17:06,112 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 18:17:06,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-06 18:17:06,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-06 18:17:06,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.2510133843212237) internal successors, (16357), 13133 states have internal predecessors, (16357), 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 18:17:06,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 16357 transitions. [2021-11-06 18:17:06,570 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 16357 transitions. Word has length 166 [2021-11-06 18:17:06,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:06,570 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 16357 transitions. [2021-11-06 18:17:06,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 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 18:17:06,570 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 16357 transitions. [2021-11-06 18:17:06,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-06 18:17:06,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:06,572 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 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 18:17:06,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 18:17:06,573 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:17:06,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:06,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1038662429, now seen corresponding path program 1 times [2021-11-06 18:17:06,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:06,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818060909] [2021-11-06 18:17:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:06,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:06,901 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 18:17:06,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:06,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818060909] [2021-11-06 18:17:06,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818060909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:06,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:06,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:17:06,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583677705] [2021-11-06 18:17:06,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:17:06,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:06,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:17:06,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:17:06,903 INFO L87 Difference]: Start difference. First operand 13134 states and 16357 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 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 18:17:08,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:17:08,100 INFO L93 Difference]: Finished difference Result 26200 states and 32638 transitions. [2021-11-06 18:17:08,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:17:08,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 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 167 [2021-11-06 18:17:08,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:17:08,115 INFO L225 Difference]: With dead ends: 26200 [2021-11-06 18:17:08,115 INFO L226 Difference]: Without dead ends: 13134 [2021-11-06 18:17:08,132 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 18:17:08,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-06 18:17:08,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-06 18:17:08,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.2321988527724665) internal successors, (16111), 13133 states have internal predecessors, (16111), 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 18:17:08,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 16111 transitions. [2021-11-06 18:17:08,565 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 16111 transitions. Word has length 167 [2021-11-06 18:17:08,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:08,566 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 16111 transitions. [2021-11-06 18:17:08,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 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 18:17:08,566 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 16111 transitions. [2021-11-06 18:17:08,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-06 18:17:08,567 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:08,568 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 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 18:17:08,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 18:17:08,568 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:17:08,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:08,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2135494197, now seen corresponding path program 1 times [2021-11-06 18:17:08,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:08,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293088107] [2021-11-06 18:17:08,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:08,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 18:17:08,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:08,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293088107] [2021-11-06 18:17:08,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293088107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:08,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:08,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:17:08,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396397477] [2021-11-06 18:17:08,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:17:08,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:08,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:17:08,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:17:08,969 INFO L87 Difference]: Start difference. First operand 13134 states and 16111 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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 18:17:10,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:17:10,121 INFO L93 Difference]: Finished difference Result 26200 states and 32146 transitions. [2021-11-06 18:17:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:17:10,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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 168 [2021-11-06 18:17:10,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:17:10,142 INFO L225 Difference]: With dead ends: 26200 [2021-11-06 18:17:10,143 INFO L226 Difference]: Without dead ends: 13134 [2021-11-06 18:17:10,161 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 18:17:10,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-06 18:17:10,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-06 18:17:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.2133843212237094) internal successors, (15865), 13133 states have internal predecessors, (15865), 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 18:17:10,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 15865 transitions. [2021-11-06 18:17:10,750 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 15865 transitions. Word has length 168 [2021-11-06 18:17:10,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:10,750 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 15865 transitions. [2021-11-06 18:17:10,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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 18:17:10,751 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 15865 transitions. [2021-11-06 18:17:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-06 18:17:10,754 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:10,754 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 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 18:17:10,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 18:17:10,754 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:17:10,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:10,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2135553779, now seen corresponding path program 1 times [2021-11-06 18:17:10,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:10,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911120346] [2021-11-06 18:17:10,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:10,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 18:17:11,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:11,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911120346] [2021-11-06 18:17:11,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911120346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:11,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:11,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:17:11,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240301023] [2021-11-06 18:17:11,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:17:11,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:11,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:17:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:17:11,082 INFO L87 Difference]: Start difference. First operand 13134 states and 15865 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 18:17:14,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:17:14,499 INFO L93 Difference]: Finished difference Result 34000 states and 41402 transitions. [2021-11-06 18:17:14,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:17:14,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 168 [2021-11-06 18:17:14,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:17:14,543 INFO L225 Difference]: With dead ends: 34000 [2021-11-06 18:17:14,543 INFO L226 Difference]: Without dead ends: 33882 [2021-11-06 18:17:14,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:17:14,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33882 states. [2021-11-06 18:17:15,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33882 to 13038. [2021-11-06 18:17:15,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13038 states, 13033 states have (on average 1.1956571779329395) internal successors, (15583), 13037 states have internal predecessors, (15583), 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 18:17:15,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13038 states to 13038 states and 15583 transitions. [2021-11-06 18:17:15,321 INFO L78 Accepts]: Start accepts. Automaton has 13038 states and 15583 transitions. Word has length 168 [2021-11-06 18:17:15,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:15,321 INFO L470 AbstractCegarLoop]: Abstraction has 13038 states and 15583 transitions. [2021-11-06 18:17:15,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 18:17:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 13038 states and 15583 transitions. [2021-11-06 18:17:15,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-11-06 18:17:15,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:15,336 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:15,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 18:17:15,337 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:17:15,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:15,338 INFO L85 PathProgramCache]: Analyzing trace with hash -869102373, now seen corresponding path program 1 times [2021-11-06 18:17:15,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:15,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262966930] [2021-11-06 18:17:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:15,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 18:17:16,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:16,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262966930] [2021-11-06 18:17:16,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262966930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:16,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:16,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 18:17:16,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320598607] [2021-11-06 18:17:16,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 18:17:16,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:16,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 18:17:16,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 18:17:16,106 INFO L87 Difference]: Start difference. First operand 13038 states and 15583 transitions. Second operand has 8 states, 8 states have (on average 45.125) internal successors, (361), 8 states have internal predecessors, (361), 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 18:17:23,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:17:23,257 INFO L93 Difference]: Finished difference Result 119362 states and 143351 transitions. [2021-11-06 18:17:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-06 18:17:23,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 45.125) internal successors, (361), 8 states have internal predecessors, (361), 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 369 [2021-11-06 18:17:23,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:17:23,432 INFO L225 Difference]: With dead ends: 119362 [2021-11-06 18:17:23,432 INFO L226 Difference]: Without dead ends: 106392 [2021-11-06 18:17:23,464 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-11-06 18:17:23,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106392 states. [2021-11-06 18:17:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106392 to 13082. [2021-11-06 18:17:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13082 states, 13077 states have (on average 1.1953047335015676) internal successors, (15631), 13081 states have internal predecessors, (15631), 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 18:17:25,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13082 states to 13082 states and 15631 transitions. [2021-11-06 18:17:25,258 INFO L78 Accepts]: Start accepts. Automaton has 13082 states and 15631 transitions. Word has length 369 [2021-11-06 18:17:25,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:25,259 INFO L470 AbstractCegarLoop]: Abstraction has 13082 states and 15631 transitions. [2021-11-06 18:17:25,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.125) internal successors, (361), 8 states have internal predecessors, (361), 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 18:17:25,259 INFO L276 IsEmpty]: Start isEmpty. Operand 13082 states and 15631 transitions. [2021-11-06 18:17:25,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-11-06 18:17:25,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:25,274 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:25,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 18:17:25,274 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:17:25,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:25,275 INFO L85 PathProgramCache]: Analyzing trace with hash -141439490, now seen corresponding path program 1 times [2021-11-06 18:17:25,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:25,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139291072] [2021-11-06 18:17:25,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:25,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 18:17:25,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:25,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139291072] [2021-11-06 18:17:25,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139291072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:25,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:25,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:17:25,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756463718] [2021-11-06 18:17:25,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:17:25,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:25,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:17:25,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:17:25,815 INFO L87 Difference]: Start difference. First operand 13082 states and 15631 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 18:17:29,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:17:29,488 INFO L93 Difference]: Finished difference Result 31363 states and 37435 transitions. [2021-11-06 18:17:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:17:29,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 389 [2021-11-06 18:17:29,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:17:29,507 INFO L225 Difference]: With dead ends: 31363 [2021-11-06 18:17:29,507 INFO L226 Difference]: Without dead ends: 18349 [2021-11-06 18:17:29,519 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 18:17:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18349 states. [2021-11-06 18:17:30,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18349 to 18237. [2021-11-06 18:17:30,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18237 states, 18232 states have (on average 1.1919701623519088) internal successors, (21732), 18236 states have internal predecessors, (21732), 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 18:17:30,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18237 states to 18237 states and 21732 transitions. [2021-11-06 18:17:30,756 INFO L78 Accepts]: Start accepts. Automaton has 18237 states and 21732 transitions. Word has length 389 [2021-11-06 18:17:30,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:30,757 INFO L470 AbstractCegarLoop]: Abstraction has 18237 states and 21732 transitions. [2021-11-06 18:17:30,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 18:17:30,757 INFO L276 IsEmpty]: Start isEmpty. Operand 18237 states and 21732 transitions. [2021-11-06 18:17:30,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2021-11-06 18:17:30,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:30,768 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:30,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 18:17:30,769 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:17:30,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:30,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1613999160, now seen corresponding path program 1 times [2021-11-06 18:17:30,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:30,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823216308] [2021-11-06 18:17:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:30,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 18:17:31,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:31,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823216308] [2021-11-06 18:17:31,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823216308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:31,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:31,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:17:31,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146755828] [2021-11-06 18:17:31,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:17:31,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:31,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:17:31,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:17:31,293 INFO L87 Difference]: Start difference. First operand 18237 states and 21732 transitions. Second operand has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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 18:17:36,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:17:36,642 INFO L93 Difference]: Finished difference Result 57382 states and 68196 transitions. [2021-11-06 18:17:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:17:36,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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 403 [2021-11-06 18:17:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:17:36,691 INFO L225 Difference]: With dead ends: 57382 [2021-11-06 18:17:36,692 INFO L226 Difference]: Without dead ends: 39213 [2021-11-06 18:17:36,715 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:17:36,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39213 states. [2021-11-06 18:17:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39213 to 23386. [2021-11-06 18:17:38,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23386 states, 23381 states have (on average 1.190154398870878) internal successors, (27827), 23385 states have internal predecessors, (27827), 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 18:17:38,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23386 states to 23386 states and 27827 transitions. [2021-11-06 18:17:38,427 INFO L78 Accepts]: Start accepts. Automaton has 23386 states and 27827 transitions. Word has length 403 [2021-11-06 18:17:38,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:38,428 INFO L470 AbstractCegarLoop]: Abstraction has 23386 states and 27827 transitions. [2021-11-06 18:17:38,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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 18:17:38,428 INFO L276 IsEmpty]: Start isEmpty. Operand 23386 states and 27827 transitions. [2021-11-06 18:17:38,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-11-06 18:17:38,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:38,442 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:38,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 18:17:38,442 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:17:38,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:38,442 INFO L85 PathProgramCache]: Analyzing trace with hash 637091725, now seen corresponding path program 1 times [2021-11-06 18:17:38,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:38,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447564312] [2021-11-06 18:17:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:38,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 18:17:39,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:39,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447564312] [2021-11-06 18:17:39,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447564312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:39,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:39,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:17:39,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911034051] [2021-11-06 18:17:39,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:17:39,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:39,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:17:39,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:17:39,122 INFO L87 Difference]: Start difference. First operand 23386 states and 27827 transitions. Second operand has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 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 18:17:45,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:17:45,629 INFO L93 Difference]: Finished difference Result 75043 states and 89230 transitions. [2021-11-06 18:17:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:17:45,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 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 404 [2021-11-06 18:17:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:17:45,722 INFO L225 Difference]: With dead ends: 75043 [2021-11-06 18:17:45,722 INFO L226 Difference]: Without dead ends: 51725 [2021-11-06 18:17:45,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:17:45,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51725 states. [2021-11-06 18:17:47,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51725 to 28547. [2021-11-06 18:17:47,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28547 states, 28542 states have (on average 1.18891458201948) internal successors, (33934), 28546 states have internal predecessors, (33934), 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 18:17:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28547 states to 28547 states and 33934 transitions. [2021-11-06 18:17:48,036 INFO L78 Accepts]: Start accepts. Automaton has 28547 states and 33934 transitions. Word has length 404 [2021-11-06 18:17:48,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:48,037 INFO L470 AbstractCegarLoop]: Abstraction has 28547 states and 33934 transitions. [2021-11-06 18:17:48,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 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 18:17:48,037 INFO L276 IsEmpty]: Start isEmpty. Operand 28547 states and 33934 transitions. [2021-11-06 18:17:48,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2021-11-06 18:17:48,056 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:48,056 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:48,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 18:17:48,056 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:17:48,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:48,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1321580297, now seen corresponding path program 1 times [2021-11-06 18:17:48,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:48,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342566944] [2021-11-06 18:17:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:48,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 18:17:48,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:48,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342566944] [2021-11-06 18:17:48,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342566944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:48,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:48,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:17:48,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526688730] [2021-11-06 18:17:48,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:17:48,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:48,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:17:48,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:17:48,782 INFO L87 Difference]: Start difference. First operand 28547 states and 33934 transitions. Second operand has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 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 18:17:55,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:17:55,733 INFO L93 Difference]: Finished difference Result 85383 states and 101480 transitions. [2021-11-06 18:17:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:17:55,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 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 405 [2021-11-06 18:17:55,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:17:55,822 INFO L225 Difference]: With dead ends: 85383 [2021-11-06 18:17:55,822 INFO L226 Difference]: Without dead ends: 56904 [2021-11-06 18:17:55,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:17:55,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56904 states. [2021-11-06 18:17:58,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56904 to 33726. [2021-11-06 18:17:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33726 states, 33721 states have (on average 1.1879540938880817) internal successors, (40059), 33725 states have internal predecessors, (40059), 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 18:17:58,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33726 states to 33726 states and 40059 transitions. [2021-11-06 18:17:58,457 INFO L78 Accepts]: Start accepts. Automaton has 33726 states and 40059 transitions. Word has length 405 [2021-11-06 18:17:58,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:58,458 INFO L470 AbstractCegarLoop]: Abstraction has 33726 states and 40059 transitions. [2021-11-06 18:17:58,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 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 18:17:58,458 INFO L276 IsEmpty]: Start isEmpty. Operand 33726 states and 40059 transitions. [2021-11-06 18:17:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2021-11-06 18:17:58,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:58,476 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:58,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 18:17:58,476 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:17:58,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash 644783852, now seen corresponding path program 1 times [2021-11-06 18:17:58,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:58,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190283495] [2021-11-06 18:17:58,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:58,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:58,937 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 18:17:58,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:58,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190283495] [2021-11-06 18:17:58,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190283495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:58,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:58,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:17:58,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802318130] [2021-11-06 18:17:58,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:17:58,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:58,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:17:58,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:17:58,939 INFO L87 Difference]: Start difference. First operand 33726 states and 40059 transitions. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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)