/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:24:15,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:24:15,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:24:15,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:24:15,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:24:15,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:24:15,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:24:15,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:24:15,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:24:15,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:24:15,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:24:15,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:24:15,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:24:15,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:24:15,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:24:15,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:24:15,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:24:15,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:24:15,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:24:15,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:24:15,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:24:15,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:24:15,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:24:15,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:24:15,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:24:15,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:24:15,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:24:15,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:24:15,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:24:15,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:24:15,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:24:15,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:24:15,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:24:15,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:24:15,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:24:15,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:24:15,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:24:15,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:24:15,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:24:15,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:24:15,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:24:15,849 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:24:15,906 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:24:15,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:24:15,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:24:15,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:24:15,909 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:24:15,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:24:15,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:24:15,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:24:15,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:24:15,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:24:15,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:24:15,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:24:15,913 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:24:15,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:24:15,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:24:15,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:24:15,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:24:15,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:24:15,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:24:15,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:24:15,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:24:15,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:24:15,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:24:15,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:24:15,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:24:15,916 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:24:16,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:24:16,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:24:16,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:24:16,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:24:16,454 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:24:16,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2020-12-22 13:24:16,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6cb89379/a386ff7993144c5ab847b0baa71d6237/FLAG415a6ecc0 [2020-12-22 13:24:17,985 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:24:17,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2020-12-22 13:24:18,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6cb89379/a386ff7993144c5ab847b0baa71d6237/FLAG415a6ecc0 [2020-12-22 13:24:18,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6cb89379/a386ff7993144c5ab847b0baa71d6237 [2020-12-22 13:24:18,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:24:18,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:24:18,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:24:18,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:24:18,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:24:18,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:24:18" (1/1) ... [2020-12-22 13:24:18,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8d6e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:18, skipping insertion in model container [2020-12-22 13:24:18,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:24:18" (1/1) ... [2020-12-22 13:24:18,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:24:18,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:24:19,803 WARN L226 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[174455,174468] [2020-12-22 13:24:23,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:24:23,192 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:24:23,435 WARN L226 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[174455,174468] [2020-12-22 13:24:23,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:24:25,023 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:24:25,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:25 WrapperNode [2020-12-22 13:24:25,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:24:25,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:24:25,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:24:25,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:24:25,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:25" (1/1) ... [2020-12-22 13:24:25,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:25" (1/1) ... [2020-12-22 13:24:26,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:24:26,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:24:26,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:24:26,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:24:26,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:25" (1/1) ... [2020-12-22 13:24:26,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:25" (1/1) ... [2020-12-22 13:24:26,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:25" (1/1) ... [2020-12-22 13:24:26,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:25" (1/1) ... [2020-12-22 13:24:27,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:25" (1/1) ... [2020-12-22 13:24:27,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:25" (1/1) ... [2020-12-22 13:24:27,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:25" (1/1) ... [2020-12-22 13:24:28,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:24:28,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:24:28,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:24:28,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:24:28,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:24:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2020-12-22 13:24:28,294 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2020-12-22 13:24:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2020-12-22 13:24:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2020-12-22 13:24:28,294 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2020-12-22 13:24:28,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:24:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:24:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:24:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:24:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:24:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:24:28,300 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:24:28,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:24:28,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:24:28,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:24:28,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:24:28,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:24:28,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:24:28,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:24:28,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:24:28,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:25:11,505 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:25:11,506 INFO L299 CfgBuilder]: Removed 5688 assume(true) statements. [2020-12-22 13:25:11,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:25:11 BoogieIcfgContainer [2020-12-22 13:25:11,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:25:11,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:25:11,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:25:11,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:25:11,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:24:18" (1/3) ... [2020-12-22 13:25:11,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689920da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:25:11, skipping insertion in model container [2020-12-22 13:25:11,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:25" (2/3) ... [2020-12-22 13:25:11,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689920da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:25:11, skipping insertion in model container [2020-12-22 13:25:11,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:25:11" (3/3) ... [2020-12-22 13:25:11,525 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2020-12-22 13:25:11,532 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:25:11,541 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 13:25:11,564 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 13:25:11,616 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:25:11,616 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:25:11,617 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:25:11,617 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:25:11,617 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:25:11,617 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:25:11,617 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:25:11,617 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:25:11,710 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states. [2020-12-22 13:25:11,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 13:25:11,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:25:11,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:25:11,720 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:25:11,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:25:11,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1442246229, now seen corresponding path program 1 times [2020-12-22 13:25:11,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:25:11,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180710671] [2020-12-22 13:25:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:25:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:25:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:25:13,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180710671] [2020-12-22 13:25:13,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:25:13,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:25:13,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192077336] [2020-12-22 13:25:13,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:25:13,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:25:13,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:25:13,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:25:13,061 INFO L87 Difference]: Start difference. First operand 6328 states. Second operand 3 states. [2020-12-22 13:25:13,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:25:13,646 INFO L93 Difference]: Finished difference Result 12652 states and 17405 transitions. [2020-12-22 13:25:13,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:25:13,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 13:25:13,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:25:13,708 INFO L225 Difference]: With dead ends: 12652 [2020-12-22 13:25:13,708 INFO L226 Difference]: Without dead ends: 5867 [2020-12-22 13:25:13,736 INFO L677 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 [2020-12-22 13:25:13,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5867 states. [2020-12-22 13:25:14,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5867 to 5867. [2020-12-22 13:25:14,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5867 states. [2020-12-22 13:25:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5867 states to 5867 states and 7704 transitions. [2020-12-22 13:25:14,247 INFO L78 Accepts]: Start accepts. Automaton has 5867 states and 7704 transitions. Word has length 20 [2020-12-22 13:25:14,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:25:14,248 INFO L481 AbstractCegarLoop]: Abstraction has 5867 states and 7704 transitions. [2020-12-22 13:25:14,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:25:14,249 INFO L276 IsEmpty]: Start isEmpty. Operand 5867 states and 7704 transitions. [2020-12-22 13:25:14,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 13:25:14,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:25:14,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:25:14,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:25:14,255 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:25:14,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:25:14,259 INFO L82 PathProgramCache]: Analyzing trace with hash 129900104, now seen corresponding path program 1 times [2020-12-22 13:25:14,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:25:14,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755185238] [2020-12-22 13:25:14,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:25:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:25:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:25:15,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755185238] [2020-12-22 13:25:15,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:25:15,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:25:15,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720961659] [2020-12-22 13:25:15,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:25:15,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:25:15,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:25:15,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:25:15,044 INFO L87 Difference]: Start difference. First operand 5867 states and 7704 transitions. Second operand 3 states. [2020-12-22 13:25:17,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:25:17,857 INFO L93 Difference]: Finished difference Result 17562 states and 23068 transitions. [2020-12-22 13:25:17,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:25:17,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 13:25:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:25:17,934 INFO L225 Difference]: With dead ends: 17562 [2020-12-22 13:25:17,934 INFO L226 Difference]: Without dead ends: 11706 [2020-12-22 13:25:17,950 INFO L677 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 [2020-12-22 13:25:17,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11706 states. [2020-12-22 13:25:18,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11706 to 11706. [2020-12-22 13:25:18,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11706 states. [2020-12-22 13:25:18,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11706 states to 11706 states and 15374 transitions. [2020-12-22 13:25:18,333 INFO L78 Accepts]: Start accepts. Automaton has 11706 states and 15374 transitions. Word has length 21 [2020-12-22 13:25:18,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:25:18,334 INFO L481 AbstractCegarLoop]: Abstraction has 11706 states and 15374 transitions. [2020-12-22 13:25:18,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:25:18,335 INFO L276 IsEmpty]: Start isEmpty. Operand 11706 states and 15374 transitions. [2020-12-22 13:25:18,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 13:25:18,336 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:25:18,337 INFO L422 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] [2020-12-22 13:25:18,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:25:18,337 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:25:18,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:25:18,338 INFO L82 PathProgramCache]: Analyzing trace with hash -683396018, now seen corresponding path program 1 times [2020-12-22 13:25:18,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:25:18,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227844883] [2020-12-22 13:25:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:25:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:25:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:25:19,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227844883] [2020-12-22 13:25:19,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:25:19,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:25:19,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573913529] [2020-12-22 13:25:19,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:25:19,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:25:19,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:25:19,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:25:19,190 INFO L87 Difference]: Start difference. First operand 11706 states and 15374 transitions. Second operand 5 states. [2020-12-22 13:25:20,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:25:20,949 INFO L93 Difference]: Finished difference Result 35094 states and 46095 transitions. [2020-12-22 13:25:20,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:25:20,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-12-22 13:25:20,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:25:21,052 INFO L225 Difference]: With dead ends: 35094 [2020-12-22 13:25:21,053 INFO L226 Difference]: Without dead ends: 23394 [2020-12-22 13:25:21,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:25:21,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23394 states. [2020-12-22 13:25:21,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23394 to 23314. [2020-12-22 13:25:21,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23314 states. [2020-12-22 13:25:22,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23314 states to 23314 states and 30614 transitions. [2020-12-22 13:25:22,156 INFO L78 Accepts]: Start accepts. Automaton has 23314 states and 30614 transitions. Word has length 25 [2020-12-22 13:25:22,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:25:22,163 INFO L481 AbstractCegarLoop]: Abstraction has 23314 states and 30614 transitions. [2020-12-22 13:25:22,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:25:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 23314 states and 30614 transitions. [2020-12-22 13:25:22,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 13:25:22,197 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:25:22,198 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:25:22,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:25:22,198 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:25:22,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:25:22,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1358902652, now seen corresponding path program 1 times [2020-12-22 13:25:22,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:25:22,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961730553] [2020-12-22 13:25:22,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:25:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:25:22,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:25:22,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961730553] [2020-12-22 13:25:22,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:25:22,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:25:22,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092297799] [2020-12-22 13:25:22,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:25:22,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:25:22,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:25:22,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:25:22,916 INFO L87 Difference]: Start difference. First operand 23314 states and 30614 transitions. Second operand 3 states. [2020-12-22 13:25:24,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:25:24,362 INFO L93 Difference]: Finished difference Result 61992 states and 81276 transitions. [2020-12-22 13:25:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:25:24,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 13:25:24,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:25:24,480 INFO L225 Difference]: With dead ends: 61992 [2020-12-22 13:25:24,480 INFO L226 Difference]: Without dead ends: 38689 [2020-12-22 13:25:24,534 INFO L677 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 [2020-12-22 13:25:24,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38689 states. [2020-12-22 13:25:26,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38689 to 37958. [2020-12-22 13:25:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37958 states. [2020-12-22 13:25:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37958 states to 37958 states and 49723 transitions. [2020-12-22 13:25:26,232 INFO L78 Accepts]: Start accepts. Automaton has 37958 states and 49723 transitions. Word has length 66 [2020-12-22 13:25:26,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:25:26,233 INFO L481 AbstractCegarLoop]: Abstraction has 37958 states and 49723 transitions. [2020-12-22 13:25:26,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:25:26,233 INFO L276 IsEmpty]: Start isEmpty. Operand 37958 states and 49723 transitions. [2020-12-22 13:25:26,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 13:25:26,248 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:25:26,249 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:25:26,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:25:26,249 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:25:26,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:25:26,250 INFO L82 PathProgramCache]: Analyzing trace with hash -630713150, now seen corresponding path program 1 times [2020-12-22 13:25:26,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:25:26,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477735552] [2020-12-22 13:25:26,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:25:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:25:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:25:26,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477735552] [2020-12-22 13:25:26,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:25:26,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:25:26,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540960059] [2020-12-22 13:25:26,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:25:26,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:25:26,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:25:26,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:25:26,979 INFO L87 Difference]: Start difference. First operand 37958 states and 49723 transitions. Second operand 3 states. [2020-12-22 13:25:28,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:25:28,931 INFO L93 Difference]: Finished difference Result 101520 states and 132891 transitions. [2020-12-22 13:25:28,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:25:28,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-22 13:25:28,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:25:29,146 INFO L225 Difference]: With dead ends: 101520 [2020-12-22 13:25:29,147 INFO L226 Difference]: Without dead ends: 63573 [2020-12-22 13:25:29,314 INFO L677 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 [2020-12-22 13:25:29,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63573 states. [2020-12-22 13:25:31,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63573 to 63566. [2020-12-22 13:25:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63566 states. [2020-12-22 13:25:31,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63566 states to 63566 states and 83167 transitions. [2020-12-22 13:25:31,520 INFO L78 Accepts]: Start accepts. Automaton has 63566 states and 83167 transitions. Word has length 85 [2020-12-22 13:25:31,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:25:31,522 INFO L481 AbstractCegarLoop]: Abstraction has 63566 states and 83167 transitions. [2020-12-22 13:25:31,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:25:31,522 INFO L276 IsEmpty]: Start isEmpty. Operand 63566 states and 83167 transitions. [2020-12-22 13:25:31,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 13:25:31,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:25:31,552 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-12-22 13:25:31,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:25:31,553 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:25:31,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:25:31,553 INFO L82 PathProgramCache]: Analyzing trace with hash -330724120, now seen corresponding path program 1 times [2020-12-22 13:25:31,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:25:31,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455472559] [2020-12-22 13:25:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:25:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:25:32,460 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:25:32,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455472559] [2020-12-22 13:25:32,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:25:32,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:25:32,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418682415] [2020-12-22 13:25:32,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:25:32,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:25:32,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:25:32,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:25:32,466 INFO L87 Difference]: Start difference. First operand 63566 states and 83167 transitions. Second operand 3 states. [2020-12-22 13:25:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:25:36,492 INFO L93 Difference]: Finished difference Result 152824 states and 199939 transitions. [2020-12-22 13:25:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:25:36,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 13:25:36,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:25:36,972 INFO L225 Difference]: With dead ends: 152824 [2020-12-22 13:25:36,976 INFO L226 Difference]: Without dead ends: 89269 [2020-12-22 13:25:37,059 INFO L677 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 [2020-12-22 13:25:37,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89269 states. [2020-12-22 13:25:39,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89269 to 89262. [2020-12-22 13:25:39,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89262 states. [2020-12-22 13:25:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89262 states to 89262 states and 116731 transitions. [2020-12-22 13:25:39,809 INFO L78 Accepts]: Start accepts. Automaton has 89262 states and 116731 transitions. Word has length 97 [2020-12-22 13:25:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:25:39,810 INFO L481 AbstractCegarLoop]: Abstraction has 89262 states and 116731 transitions. [2020-12-22 13:25:39,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:25:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 89262 states and 116731 transitions. [2020-12-22 13:25:39,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 13:25:39,849 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:25:39,849 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-12-22 13:25:39,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:25:39,850 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:25:39,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:25:39,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1766627619, now seen corresponding path program 1 times [2020-12-22 13:25:39,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:25:39,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485050021] [2020-12-22 13:25:39,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:25:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:25:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 13:25:40,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485050021] [2020-12-22 13:25:40,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:25:40,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:25:40,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89460073] [2020-12-22 13:25:40,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:25:40,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:25:40,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:25:40,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:25:40,436 INFO L87 Difference]: Start difference. First operand 89262 states and 116731 transitions. Second operand 4 states. [2020-12-22 13:25:45,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:25:45,539 INFO L93 Difference]: Finished difference Result 208580 states and 272803 transitions. [2020-12-22 13:25:45,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:25:45,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-12-22 13:25:45,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:25:45,842 INFO L225 Difference]: With dead ends: 208580 [2020-12-22 13:25:45,843 INFO L226 Difference]: Without dead ends: 119329 [2020-12-22 13:25:45,994 INFO L677 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 [2020-12-22 13:25:46,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119329 states. [2020-12-22 13:25:48,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119329 to 89278. [2020-12-22 13:25:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89278 states. [2020-12-22 13:25:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89278 states to 89278 states and 116747 transitions. [2020-12-22 13:25:48,993 INFO L78 Accepts]: Start accepts. Automaton has 89278 states and 116747 transitions. Word has length 110 [2020-12-22 13:25:48,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:25:48,994 INFO L481 AbstractCegarLoop]: Abstraction has 89278 states and 116747 transitions. [2020-12-22 13:25:48,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:25:48,994 INFO L276 IsEmpty]: Start isEmpty. Operand 89278 states and 116747 transitions. [2020-12-22 13:25:49,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 13:25:49,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:25:49,036 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-12-22 13:25:49,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:25:49,037 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:25:49,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:25:49,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1292418325, now seen corresponding path program 1 times [2020-12-22 13:25:49,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:25:49,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010006669] [2020-12-22 13:25:49,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:25:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:25:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 13:25:49,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010006669] [2020-12-22 13:25:49,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:25:49,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:25:49,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863529156] [2020-12-22 13:25:49,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:25:49,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:25:49,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:25:49,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:25:49,579 INFO L87 Difference]: Start difference. First operand 89278 states and 116747 transitions. Second operand 4 states. [2020-12-22 13:25:55,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:25:55,104 INFO L93 Difference]: Finished difference Result 208620 states and 272843 transitions. [2020-12-22 13:25:55,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:25:55,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-12-22 13:25:55,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:25:55,500 INFO L225 Difference]: With dead ends: 208620 [2020-12-22 13:25:55,500 INFO L226 Difference]: Without dead ends: 119353 [2020-12-22 13:25:55,618 INFO L677 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 [2020-12-22 13:25:55,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119353 states. [2020-12-22 13:25:57,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119353 to 89278. [2020-12-22 13:25:57,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89278 states. [2020-12-22 13:25:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89278 states to 89278 states and 116747 transitions. [2020-12-22 13:25:58,268 INFO L78 Accepts]: Start accepts. Automaton has 89278 states and 116747 transitions. Word has length 119 [2020-12-22 13:25:58,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:25:58,268 INFO L481 AbstractCegarLoop]: Abstraction has 89278 states and 116747 transitions. [2020-12-22 13:25:58,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:25:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 89278 states and 116747 transitions. [2020-12-22 13:25:58,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-22 13:25:58,304 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:25:58,304 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-12-22 13:25:58,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:25:58,305 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:25:58,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:25:58,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1403835628, now seen corresponding path program 1 times [2020-12-22 13:25:58,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:25:58,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760742651] [2020-12-22 13:25:58,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:25:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:25:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:25:58,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760742651] [2020-12-22 13:25:58,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:25:58,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:25:58,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472494822] [2020-12-22 13:25:58,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:25:58,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:25:58,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:25:58,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:25:58,857 INFO L87 Difference]: Start difference. First operand 89278 states and 116747 transitions. Second operand 3 states. [2020-12-22 13:26:01,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:26:01,667 INFO L93 Difference]: Finished difference Result 178545 states and 233481 transitions. [2020-12-22 13:26:01,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:26:01,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2020-12-22 13:26:01,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:26:01,850 INFO L225 Difference]: With dead ends: 178545 [2020-12-22 13:26:01,850 INFO L226 Difference]: Without dead ends: 89278 [2020-12-22 13:26:02,003 INFO L677 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 [2020-12-22 13:26:02,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89278 states. [2020-12-22 13:26:04,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89278 to 89278. [2020-12-22 13:26:04,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89278 states. [2020-12-22 13:26:04,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89278 states to 89278 states and 116739 transitions. [2020-12-22 13:26:04,724 INFO L78 Accepts]: Start accepts. Automaton has 89278 states and 116739 transitions. Word has length 137 [2020-12-22 13:26:04,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:26:04,724 INFO L481 AbstractCegarLoop]: Abstraction has 89278 states and 116739 transitions. [2020-12-22 13:26:04,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:26:04,724 INFO L276 IsEmpty]: Start isEmpty. Operand 89278 states and 116739 transitions. [2020-12-22 13:26:04,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 13:26:04,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:26:04,749 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-12-22 13:26:04,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:26:04,750 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:26:04,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:26:04,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1173711182, now seen corresponding path program 1 times [2020-12-22 13:26:04,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:26:04,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684341128] [2020-12-22 13:26:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:26:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:26:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:26:05,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684341128] [2020-12-22 13:26:05,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:26:05,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:26:05,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029714647] [2020-12-22 13:26:05,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:26:05,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:26:05,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:26:05,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:26:05,282 INFO L87 Difference]: Start difference. First operand 89278 states and 116739 transitions. Second operand 3 states. [2020-12-22 13:26:07,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:26:07,720 INFO L93 Difference]: Finished difference Result 178553 states and 233481 transitions. [2020-12-22 13:26:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:26:07,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2020-12-22 13:26:07,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:26:07,919 INFO L225 Difference]: With dead ends: 178553 [2020-12-22 13:26:07,920 INFO L226 Difference]: Without dead ends: 89286 [2020-12-22 13:26:08,036 INFO L677 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 [2020-12-22 13:26:08,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89286 states. [2020-12-22 13:26:10,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89286 to 89286. [2020-12-22 13:26:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89286 states. [2020-12-22 13:26:10,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89286 states to 89286 states and 116747 transitions. [2020-12-22 13:26:10,700 INFO L78 Accepts]: Start accepts. Automaton has 89286 states and 116747 transitions. Word has length 141 [2020-12-22 13:26:10,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:26:10,700 INFO L481 AbstractCegarLoop]: Abstraction has 89286 states and 116747 transitions. [2020-12-22 13:26:10,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:26:10,701 INFO L276 IsEmpty]: Start isEmpty. Operand 89286 states and 116747 transitions. [2020-12-22 13:26:10,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 13:26:10,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:26:10,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-12-22 13:26:10,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 13:26:10,721 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:26:10,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:26:10,721 INFO L82 PathProgramCache]: Analyzing trace with hash 402977616, now seen corresponding path program 1 times [2020-12-22 13:26:10,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:26:10,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627240352] [2020-12-22 13:26:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:26:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:26:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:26:11,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627240352] [2020-12-22 13:26:11,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:26:11,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:26:11,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271963476] [2020-12-22 13:26:11,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:26:11,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:26:11,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:26:11,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:26:11,279 INFO L87 Difference]: Start difference. First operand 89286 states and 116747 transitions. Second operand 3 states. [2020-12-22 13:26:13,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:26:13,997 INFO L93 Difference]: Finished difference Result 179501 states and 234751 transitions. [2020-12-22 13:26:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:26:13,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2020-12-22 13:26:13,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:26:14,259 INFO L225 Difference]: With dead ends: 179501 [2020-12-22 13:26:14,259 INFO L226 Difference]: Without dead ends: 90226 [2020-12-22 13:26:14,353 INFO L677 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 [2020-12-22 13:26:14,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90226 states. [2020-12-22 13:26:16,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90226 to 89326. [2020-12-22 13:26:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89326 states. [2020-12-22 13:26:16,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89326 states to 89326 states and 116787 transitions. [2020-12-22 13:26:16,813 INFO L78 Accepts]: Start accepts. Automaton has 89326 states and 116787 transitions. Word has length 141 [2020-12-22 13:26:16,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:26:16,813 INFO L481 AbstractCegarLoop]: Abstraction has 89326 states and 116787 transitions. [2020-12-22 13:26:16,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:26:16,813 INFO L276 IsEmpty]: Start isEmpty. Operand 89326 states and 116787 transitions. [2020-12-22 13:26:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 13:26:17,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:26:17,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:26:17,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 13:26:17,055 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:26:17,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:26:17,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1596454919, now seen corresponding path program 1 times [2020-12-22 13:26:17,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:26:17,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149667039] [2020-12-22 13:26:17,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:26:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:26:17,545 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 13:26:17,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149667039] [2020-12-22 13:26:17,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:26:17,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:26:17,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740025826] [2020-12-22 13:26:17,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:26:17,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:26:17,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:26:17,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:26:17,548 INFO L87 Difference]: Start difference. First operand 89326 states and 116787 transitions. Second operand 4 states. [2020-12-22 13:26:23,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:26:23,275 INFO L93 Difference]: Finished difference Result 318642 states and 418195 transitions. [2020-12-22 13:26:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:26:23,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-12-22 13:26:23,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:26:23,913 INFO L225 Difference]: With dead ends: 318642 [2020-12-22 13:26:23,913 INFO L226 Difference]: Without dead ends: 229327 [2020-12-22 13:26:24,044 INFO L677 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 [2020-12-22 13:26:24,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229327 states. [2020-12-22 13:26:28,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229327 to 122282. [2020-12-22 13:26:28,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122282 states. [2020-12-22 13:26:28,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122282 states to 122282 states and 160747 transitions. [2020-12-22 13:26:28,597 INFO L78 Accepts]: Start accepts. Automaton has 122282 states and 160747 transitions. Word has length 143 [2020-12-22 13:26:28,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:26:28,599 INFO L481 AbstractCegarLoop]: Abstraction has 122282 states and 160747 transitions. [2020-12-22 13:26:28,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:26:28,599 INFO L276 IsEmpty]: Start isEmpty. Operand 122282 states and 160747 transitions. [2020-12-22 13:26:28,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 13:26:28,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:26:28,647 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:26:28,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 13:26:28,647 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:26:28,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:26:28,648 INFO L82 PathProgramCache]: Analyzing trace with hash 58338523, now seen corresponding path program 1 times [2020-12-22 13:26:28,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:26:28,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68325280] [2020-12-22 13:26:28,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:26:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:26:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 13:26:29,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68325280] [2020-12-22 13:26:29,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:26:29,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:26:29,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643544484] [2020-12-22 13:26:29,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:26:29,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:26:29,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:26:29,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:26:29,150 INFO L87 Difference]: Start difference. First operand 122282 states and 160747 transitions. Second operand 4 states. [2020-12-22 13:26:41,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:26:41,416 INFO L93 Difference]: Finished difference Result 481878 states and 635683 transitions. [2020-12-22 13:26:41,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:26:41,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-12-22 13:26:41,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:26:42,410 INFO L225 Difference]: With dead ends: 481878 [2020-12-22 13:26:42,410 INFO L226 Difference]: Without dead ends: 359607 [2020-12-22 13:26:42,596 INFO L677 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 [2020-12-22 13:26:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359607 states. [2020-12-22 13:26:50,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359607 to 230514. [2020-12-22 13:26:50,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230514 states. [2020-12-22 13:26:51,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230514 states to 230514 states and 303299 transitions. [2020-12-22 13:26:51,461 INFO L78 Accepts]: Start accepts. Automaton has 230514 states and 303299 transitions. Word has length 144 [2020-12-22 13:26:51,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:26:51,461 INFO L481 AbstractCegarLoop]: Abstraction has 230514 states and 303299 transitions. [2020-12-22 13:26:51,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:26:51,461 INFO L276 IsEmpty]: Start isEmpty. Operand 230514 states and 303299 transitions. [2020-12-22 13:26:51,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 13:26:51,484 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:26:51,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:26:51,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 13:26:51,484 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:26:51,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:26:51,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1695146006, now seen corresponding path program 1 times [2020-12-22 13:26:51,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:26:51,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333482238] [2020-12-22 13:26:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:26:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:26:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 13:26:51,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333482238] [2020-12-22 13:26:51,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:26:51,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:26:51,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803033857] [2020-12-22 13:26:51,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:26:51,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:26:51,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:26:51,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:26:51,973 INFO L87 Difference]: Start difference. First operand 230514 states and 303299 transitions. Second operand 4 states. [2020-12-22 13:27:15,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:27:15,004 INFO L93 Difference]: Finished difference Result 921534 states and 1216683 transitions. [2020-12-22 13:27:15,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:27:15,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-12-22 13:27:15,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:27:17,082 INFO L225 Difference]: With dead ends: 921534 [2020-12-22 13:27:17,083 INFO L226 Difference]: Without dead ends: 691031 [2020-12-22 13:27:17,425 INFO L677 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 [2020-12-22 13:27:18,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691031 states.