/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-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 16:24:08,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 16:24:08,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 16:24:08,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 16:24:08,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 16:24:08,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 16:24:08,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 16:24:08,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 16:24:08,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 16:24:08,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 16:24:08,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 16:24:08,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 16:24:08,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 16:24:08,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 16:24:08,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 16:24:09,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 16:24:09,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 16:24:09,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 16:24:09,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 16:24:09,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 16:24:09,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 16:24:09,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 16:24:09,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 16:24:09,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 16:24:09,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 16:24:09,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 16:24:09,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 16:24:09,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 16:24:09,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 16:24:09,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 16:24:09,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 16:24:09,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 16:24:09,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 16:24:09,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 16:24:09,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 16:24:09,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 16:24:09,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 16:24:09,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 16:24:09,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 16:24:09,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 16:24:09,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 16:24:09,058 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 16:24:09,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 16:24:09,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 16:24:09,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 16:24:09,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 16:24:09,088 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 16:24:09,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 16:24:09,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 16:24:09,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 16:24:09,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 16:24:09,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 16:24:09,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 16:24:09,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 16:24:09,090 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 16:24:09,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 16:24:09,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 16:24:09,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 16:24:09,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 16:24:09,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 16:24:09,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 16:24:09,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 16:24:09,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 16:24:09,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 16:24:09,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 16:24:09,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 16:24:09,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 16:24:09,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 16:24:09,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 16:24:09,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 16:24:09,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 16:24:09,519 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 16:24:09,520 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 16:24:09,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2020-12-22 16:24:09,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e2c59115/1a8c82172bba4047bdfa88554dd30910/FLAGa53a9effe [2020-12-22 16:24:10,779 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 16:24:10,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2020-12-22 16:24:10,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e2c59115/1a8c82172bba4047bdfa88554dd30910/FLAGa53a9effe [2020-12-22 16:24:10,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e2c59115/1a8c82172bba4047bdfa88554dd30910 [2020-12-22 16:24:10,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 16:24:10,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 16:24:10,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 16:24:10,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 16:24:10,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 16:24:10,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:24:10" (1/1) ... [2020-12-22 16:24:10,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f255c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:10, skipping insertion in model container [2020-12-22 16:24:10,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:24:10" (1/1) ... [2020-12-22 16:24:10,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 16:24:11,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 16:24:14,288 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-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[340444,340457] [2020-12-22 16:24:14,292 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-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[340589,340602] [2020-12-22 16:24:14,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 16:24:14,443 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 16:24:14,943 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-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[340444,340457] [2020-12-22 16:24:14,947 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-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[340589,340602] [2020-12-22 16:24:14,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 16:24:16,024 INFO L208 MainTranslator]: Completed translation [2020-12-22 16:24:16,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:16 WrapperNode [2020-12-22 16:24:16,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 16:24:16,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 16:24:16,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 16:24:16,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 16:24:16,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:16" (1/1) ... [2020-12-22 16:24:16,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:16" (1/1) ... [2020-12-22 16:24:30,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 16:24:30,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 16:24:30,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 16:24:30,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 16:24:30,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:16" (1/1) ... [2020-12-22 16:24:30,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:16" (1/1) ... [2020-12-22 16:24:31,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:16" (1/1) ... [2020-12-22 16:24:31,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:16" (1/1) ... [2020-12-22 16:24:33,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:16" (1/1) ... [2020-12-22 16:24:34,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:16" (1/1) ... [2020-12-22 16:24:34,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:16" (1/1) ... [2020-12-22 16:24:35,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 16:24:35,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 16:24:35,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 16:24:35,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 16:24:35,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:16" (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 16:24:35,609 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-12-22 16:24:35,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 16:24:35,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 16:24:35,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 16:24:35,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 16:24:35,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 16:24:35,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 16:24:35,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 16:24:35,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 16:24:35,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 16:24:35,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 16:24:35,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 16:24:35,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 16:24:35,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 16:24:35,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 16:24:35,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 16:26:00,639 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_entry_EMGentry_14_returnLabel: main_#res := 0; [2020-12-22 16:26:00,650 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2020-12-22 16:26:00,651 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L9962: #t~ret1340 := main_#res; [2020-12-22 16:26:00,660 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_pci_pci_instance_2_switch_break: call ULTIMATE.dealloc(ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.base, ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.offset);havoc ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.base, ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.offset; [2020-12-22 16:26:00,804 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 16:26:00,804 INFO L299 CfgBuilder]: Removed 44878 assume(true) statements. [2020-12-22 16:26:00,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:26:00 BoogieIcfgContainer [2020-12-22 16:26:00,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 16:26:00,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 16:26:00,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 16:26:00,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 16:26:00,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:24:10" (1/3) ... [2020-12-22 16:26:00,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394706ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:26:00, skipping insertion in model container [2020-12-22 16:26:00,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:24:16" (2/3) ... [2020-12-22 16:26:00,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394706ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:26:00, skipping insertion in model container [2020-12-22 16:26:00,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:26:00" (3/3) ... [2020-12-22 16:26:00,842 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2020-12-22 16:26:00,853 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 16:26:00,868 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-12-22 16:26:00,890 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-12-22 16:26:01,000 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 16:26:01,001 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 16:26:01,001 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 16:26:01,001 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 16:26:01,001 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 16:26:01,002 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 16:26:01,002 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 16:26:01,002 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 16:26:01,263 INFO L276 IsEmpty]: Start isEmpty. Operand 28720 states. [2020-12-22 16:26:01,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 16:26:01,279 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:26:01,280 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, 1, 1, 1, 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 16:26:01,280 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:26:01,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:26:01,287 INFO L82 PathProgramCache]: Analyzing trace with hash -221297839, now seen corresponding path program 1 times [2020-12-22 16:26:01,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:26:01,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082923050] [2020-12-22 16:26:01,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:26:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:26:02,166 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 16:26:02,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082923050] [2020-12-22 16:26:02,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:26:02,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 16:26:02,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251483105] [2020-12-22 16:26:02,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 16:26:02,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:26:02,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 16:26:02,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 16:26:02,192 INFO L87 Difference]: Start difference. First operand 28720 states. Second operand 2 states. [2020-12-22 16:26:03,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:26:03,513 INFO L93 Difference]: Finished difference Result 57401 states and 69348 transitions. [2020-12-22 16:26:03,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 16:26:03,515 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2020-12-22 16:26:03,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:26:03,654 INFO L225 Difference]: With dead ends: 57401 [2020-12-22 16:26:03,654 INFO L226 Difference]: Without dead ends: 24525 [2020-12-22 16:26:03,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 16:26:03,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24525 states. [2020-12-22 16:26:04,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24525 to 24525. [2020-12-22 16:26:04,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24525 states. [2020-12-22 16:26:04,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24525 states to 24525 states and 29505 transitions. [2020-12-22 16:26:04,715 INFO L78 Accepts]: Start accepts. Automaton has 24525 states and 29505 transitions. Word has length 52 [2020-12-22 16:26:04,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:26:04,716 INFO L481 AbstractCegarLoop]: Abstraction has 24525 states and 29505 transitions. [2020-12-22 16:26:04,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 16:26:04,717 INFO L276 IsEmpty]: Start isEmpty. Operand 24525 states and 29505 transitions. [2020-12-22 16:26:04,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 16:26:04,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:26:04,723 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, 1, 1, 1, 1, 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 16:26:04,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 16:26:04,726 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:26:04,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:26:04,727 INFO L82 PathProgramCache]: Analyzing trace with hash -2000935398, now seen corresponding path program 1 times [2020-12-22 16:26:04,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:26:04,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846311913] [2020-12-22 16:26:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:26:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:26:05,125 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 16:26:05,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846311913] [2020-12-22 16:26:05,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:26:05,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 16:26:05,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211104369] [2020-12-22 16:26:05,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:26:05,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:26:05,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:26:05,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:26:05,129 INFO L87 Difference]: Start difference. First operand 24525 states and 29505 transitions. Second operand 3 states. [2020-12-22 16:26:06,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:26:06,317 INFO L93 Difference]: Finished difference Result 49019 states and 58976 transitions. [2020-12-22 16:26:06,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:26:06,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 16:26:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:26:06,409 INFO L225 Difference]: With dead ends: 49019 [2020-12-22 16:26:06,410 INFO L226 Difference]: Without dead ends: 24525 [2020-12-22 16:26:06,462 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 16:26:06,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24525 states. [2020-12-22 16:26:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24525 to 24525. [2020-12-22 16:26:07,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24525 states. [2020-12-22 16:26:07,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24525 states to 24525 states and 29489 transitions. [2020-12-22 16:26:07,292 INFO L78 Accepts]: Start accepts. Automaton has 24525 states and 29489 transitions. Word has length 53 [2020-12-22 16:26:07,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:26:07,294 INFO L481 AbstractCegarLoop]: Abstraction has 24525 states and 29489 transitions. [2020-12-22 16:26:07,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:26:07,294 INFO L276 IsEmpty]: Start isEmpty. Operand 24525 states and 29489 transitions. [2020-12-22 16:26:07,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 16:26:07,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:26:07,298 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, 1, 1, 1, 1, 1, 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 16:26:07,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 16:26:07,299 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:26:07,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:26:07,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1899368458, now seen corresponding path program 1 times [2020-12-22 16:26:07,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:26:07,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102686333] [2020-12-22 16:26:07,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:26:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:26:07,679 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 16:26:07,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102686333] [2020-12-22 16:26:07,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:26:07,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:26:07,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294931790] [2020-12-22 16:26:07,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:26:07,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:26:07,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:26:07,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:26:07,682 INFO L87 Difference]: Start difference. First operand 24525 states and 29489 transitions. Second operand 4 states. [2020-12-22 16:26:09,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:26:09,430 INFO L93 Difference]: Finished difference Result 49019 states and 58944 transitions. [2020-12-22 16:26:09,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:26:09,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 16:26:09,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:26:09,496 INFO L225 Difference]: With dead ends: 49019 [2020-12-22 16:26:09,496 INFO L226 Difference]: Without dead ends: 24525 [2020-12-22 16:26:09,579 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 16:26:09,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24525 states. [2020-12-22 16:26:10,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24525 to 24525. [2020-12-22 16:26:10,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24525 states. [2020-12-22 16:26:10,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24525 states to 24525 states and 29473 transitions. [2020-12-22 16:26:10,701 INFO L78 Accepts]: Start accepts. Automaton has 24525 states and 29473 transitions. Word has length 54 [2020-12-22 16:26:10,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:26:10,704 INFO L481 AbstractCegarLoop]: Abstraction has 24525 states and 29473 transitions. [2020-12-22 16:26:10,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:26:10,704 INFO L276 IsEmpty]: Start isEmpty. Operand 24525 states and 29473 transitions. [2020-12-22 16:26:10,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 16:26:10,706 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:26:10,706 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, 1, 1, 1, 1, 1, 1, 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 16:26:10,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 16:26:10,706 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:26:10,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:26:10,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1249355637, now seen corresponding path program 1 times [2020-12-22 16:26:10,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:26:10,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15518187] [2020-12-22 16:26:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:26:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:26:11,046 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 16:26:11,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15518187] [2020-12-22 16:26:11,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:26:11,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:26:11,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991106384] [2020-12-22 16:26:11,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:26:11,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:26:11,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:26:11,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:26:11,049 INFO L87 Difference]: Start difference. First operand 24525 states and 29473 transitions. Second operand 4 states. [2020-12-22 16:26:12,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:26:12,563 INFO L93 Difference]: Finished difference Result 49019 states and 58912 transitions. [2020-12-22 16:26:12,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:26:12,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-12-22 16:26:12,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:26:12,618 INFO L225 Difference]: With dead ends: 49019 [2020-12-22 16:26:12,618 INFO L226 Difference]: Without dead ends: 24525 [2020-12-22 16:26:12,660 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 16:26:12,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24525 states. [2020-12-22 16:26:13,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24525 to 24525. [2020-12-22 16:26:13,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24525 states. [2020-12-22 16:26:13,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24525 states to 24525 states and 29457 transitions. [2020-12-22 16:26:13,834 INFO L78 Accepts]: Start accepts. Automaton has 24525 states and 29457 transitions. Word has length 55 [2020-12-22 16:26:13,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:26:13,834 INFO L481 AbstractCegarLoop]: Abstraction has 24525 states and 29457 transitions. [2020-12-22 16:26:13,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:26:13,835 INFO L276 IsEmpty]: Start isEmpty. Operand 24525 states and 29457 transitions. [2020-12-22 16:26:13,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 16:26:13,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:26:13,836 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, 1, 1, 1, 1, 1, 1, 1, 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 16:26:13,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 16:26:13,837 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:26:13,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:26:13,838 INFO L82 PathProgramCache]: Analyzing trace with hash 75703729, now seen corresponding path program 1 times [2020-12-22 16:26:13,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:26:13,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793990681] [2020-12-22 16:26:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:26:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:26:14,240 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 16:26:14,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793990681] [2020-12-22 16:26:14,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:26:14,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:26:14,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630677843] [2020-12-22 16:26:14,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:26:14,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:26:14,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:26:14,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:26:14,244 INFO L87 Difference]: Start difference. First operand 24525 states and 29457 transitions. Second operand 4 states. [2020-12-22 16:26:15,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:26:15,612 INFO L93 Difference]: Finished difference Result 49019 states and 58880 transitions. [2020-12-22 16:26:15,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:26:15,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-12-22 16:26:15,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:26:15,767 INFO L225 Difference]: With dead ends: 49019 [2020-12-22 16:26:15,768 INFO L226 Difference]: Without dead ends: 24525 [2020-12-22 16:26:15,840 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 16:26:15,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24525 states. [2020-12-22 16:26:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24525 to 24525. [2020-12-22 16:26:17,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24525 states. [2020-12-22 16:26:17,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24525 states to 24525 states and 29441 transitions. [2020-12-22 16:26:17,091 INFO L78 Accepts]: Start accepts. Automaton has 24525 states and 29441 transitions. Word has length 56 [2020-12-22 16:26:17,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:26:17,091 INFO L481 AbstractCegarLoop]: Abstraction has 24525 states and 29441 transitions. [2020-12-22 16:26:17,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:26:17,091 INFO L276 IsEmpty]: Start isEmpty. Operand 24525 states and 29441 transitions. [2020-12-22 16:26:17,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 16:26:17,092 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:26:17,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:17,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 16:26:17,093 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:26:17,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:26:17,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1947618096, now seen corresponding path program 1 times [2020-12-22 16:26:17,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:26:17,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853785832] [2020-12-22 16:26:17,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:26:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:26:17,415 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 16:26:17,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853785832] [2020-12-22 16:26:17,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:26:17,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:26:17,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680976083] [2020-12-22 16:26:17,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:26:17,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:26:17,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:26:17,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:26:17,418 INFO L87 Difference]: Start difference. First operand 24525 states and 29441 transitions. Second operand 4 states. [2020-12-22 16:26:21,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:26:21,045 INFO L93 Difference]: Finished difference Result 68744 states and 82400 transitions. [2020-12-22 16:26:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 16:26:21,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-12-22 16:26:21,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:26:21,126 INFO L225 Difference]: With dead ends: 68744 [2020-12-22 16:26:21,127 INFO L226 Difference]: Without dead ends: 44250 [2020-12-22 16:26:21,174 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 16:26:21,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44250 states. [2020-12-22 16:26:23,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44250 to 32721. [2020-12-22 16:26:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32721 states. [2020-12-22 16:26:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32721 states to 32721 states and 39246 transitions. [2020-12-22 16:26:23,505 INFO L78 Accepts]: Start accepts. Automaton has 32721 states and 39246 transitions. Word has length 57 [2020-12-22 16:26:23,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:26:23,506 INFO L481 AbstractCegarLoop]: Abstraction has 32721 states and 39246 transitions. [2020-12-22 16:26:23,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:26:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 32721 states and 39246 transitions. [2020-12-22 16:26:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 16:26:23,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:26:23,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:23,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 16:26:23,508 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:26:23,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:26:23,508 INFO L82 PathProgramCache]: Analyzing trace with hash -245936276, now seen corresponding path program 1 times [2020-12-22 16:26:23,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:26:23,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253140803] [2020-12-22 16:26:23,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:26:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:26:23,759 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 16:26:23,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253140803] [2020-12-22 16:26:23,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:26:23,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:26:23,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768519016] [2020-12-22 16:26:23,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:26:23,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:26:23,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:26:23,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:26:23,768 INFO L87 Difference]: Start difference. First operand 32721 states and 39246 transitions. Second operand 4 states. [2020-12-22 16:26:25,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:26:25,820 INFO L93 Difference]: Finished difference Result 65411 states and 78458 transitions. [2020-12-22 16:26:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:26:25,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 16:26:25,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:26:25,872 INFO L225 Difference]: With dead ends: 65411 [2020-12-22 16:26:25,872 INFO L226 Difference]: Without dead ends: 32721 [2020-12-22 16:26:25,909 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 16:26:25,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32721 states. [2020-12-22 16:26:27,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32721 to 32721. [2020-12-22 16:26:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32721 states. [2020-12-22 16:26:27,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32721 states to 32721 states and 39230 transitions. [2020-12-22 16:26:27,910 INFO L78 Accepts]: Start accepts. Automaton has 32721 states and 39230 transitions. Word has length 58 [2020-12-22 16:26:27,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:26:27,911 INFO L481 AbstractCegarLoop]: Abstraction has 32721 states and 39230 transitions. [2020-12-22 16:26:27,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:26:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 32721 states and 39230 transitions. [2020-12-22 16:26:27,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 16:26:27,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:26:27,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:27,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 16:26:27,913 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:26:27,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:26:27,913 INFO L82 PathProgramCache]: Analyzing trace with hash 966741547, now seen corresponding path program 1 times [2020-12-22 16:26:27,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:26:27,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64474966] [2020-12-22 16:26:27,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:26:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:26:28,145 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 16:26:28,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64474966] [2020-12-22 16:26:28,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:26:28,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:26:28,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345844494] [2020-12-22 16:26:28,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:26:28,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:26:28,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:26:28,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:26:28,148 INFO L87 Difference]: Start difference. First operand 32721 states and 39230 transitions. Second operand 4 states. [2020-12-22 16:26:30,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:26:30,582 INFO L93 Difference]: Finished difference Result 65411 states and 78426 transitions. [2020-12-22 16:26:30,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:26:30,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-12-22 16:26:30,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:26:30,637 INFO L225 Difference]: With dead ends: 65411 [2020-12-22 16:26:30,637 INFO L226 Difference]: Without dead ends: 32721 [2020-12-22 16:26:30,684 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 16:26:30,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32721 states. [2020-12-22 16:26:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32721 to 32721. [2020-12-22 16:26:32,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32721 states. [2020-12-22 16:26:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32721 states to 32721 states and 39214 transitions. [2020-12-22 16:26:32,836 INFO L78 Accepts]: Start accepts. Automaton has 32721 states and 39214 transitions. Word has length 59 [2020-12-22 16:26:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:26:32,836 INFO L481 AbstractCegarLoop]: Abstraction has 32721 states and 39214 transitions. [2020-12-22 16:26:32,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:26:32,837 INFO L276 IsEmpty]: Start isEmpty. Operand 32721 states and 39214 transitions. [2020-12-22 16:26:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 16:26:32,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:26:32,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:32,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 16:26:32,838 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:26:32,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:26:32,839 INFO L82 PathProgramCache]: Analyzing trace with hash -94802649, now seen corresponding path program 1 times [2020-12-22 16:26:32,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:26:32,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966938074] [2020-12-22 16:26:32,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:26:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:26:33,131 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 16:26:33,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966938074] [2020-12-22 16:26:33,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:26:33,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:26:33,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492158457] [2020-12-22 16:26:33,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:26:33,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:26:33,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:26:33,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:26:33,134 INFO L87 Difference]: Start difference. First operand 32721 states and 39214 transitions. Second operand 4 states. [2020-12-22 16:26:35,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:26:35,723 INFO L93 Difference]: Finished difference Result 65411 states and 78394 transitions. [2020-12-22 16:26:35,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:26:35,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 16:26:35,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:26:35,761 INFO L225 Difference]: With dead ends: 65411 [2020-12-22 16:26:35,761 INFO L226 Difference]: Without dead ends: 32721 [2020-12-22 16:26:35,795 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 16:26:35,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32721 states. [2020-12-22 16:26:38,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32721 to 32721. [2020-12-22 16:26:38,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32721 states. [2020-12-22 16:26:38,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32721 states to 32721 states and 39198 transitions. [2020-12-22 16:26:38,051 INFO L78 Accepts]: Start accepts. Automaton has 32721 states and 39198 transitions. Word has length 60 [2020-12-22 16:26:38,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:26:38,051 INFO L481 AbstractCegarLoop]: Abstraction has 32721 states and 39198 transitions. [2020-12-22 16:26:38,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:26:38,052 INFO L276 IsEmpty]: Start isEmpty. Operand 32721 states and 39198 transitions. [2020-12-22 16:26:38,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 16:26:38,053 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:26:38,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:38,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 16:26:38,054 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:26:38,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:26:38,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1357214598, now seen corresponding path program 1 times [2020-12-22 16:26:38,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:26:38,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759174361] [2020-12-22 16:26:38,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:26:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:26:38,280 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 16:26:38,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759174361] [2020-12-22 16:26:38,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:26:38,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:26:38,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560253535] [2020-12-22 16:26:38,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:26:38,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:26:38,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:26:38,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:26:38,282 INFO L87 Difference]: Start difference. First operand 32721 states and 39198 transitions. Second operand 4 states. [2020-12-22 16:26:41,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:26:41,410 INFO L93 Difference]: Finished difference Result 65411 states and 78362 transitions. [2020-12-22 16:26:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:26:41,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 16:26:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:26:41,448 INFO L225 Difference]: With dead ends: 65411 [2020-12-22 16:26:41,448 INFO L226 Difference]: Without dead ends: 32721 [2020-12-22 16:26:41,484 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 16:26:41,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32721 states. [2020-12-22 16:26:44,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32721 to 32721. [2020-12-22 16:26:44,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32721 states. [2020-12-22 16:26:44,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32721 states to 32721 states and 39182 transitions. [2020-12-22 16:26:44,168 INFO L78 Accepts]: Start accepts. Automaton has 32721 states and 39182 transitions. Word has length 61 [2020-12-22 16:26:44,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:26:44,169 INFO L481 AbstractCegarLoop]: Abstraction has 32721 states and 39182 transitions. [2020-12-22 16:26:44,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:26:44,169 INFO L276 IsEmpty]: Start isEmpty. Operand 32721 states and 39182 transitions. [2020-12-22 16:26:44,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 16:26:44,172 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:26:44,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:44,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 16:26:44,173 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:26:44,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:26:44,174 INFO L82 PathProgramCache]: Analyzing trace with hash -874742046, now seen corresponding path program 1 times [2020-12-22 16:26:44,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:26:44,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92223943] [2020-12-22 16:26:44,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:26:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:26:44,406 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 16:26:44,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92223943] [2020-12-22 16:26:44,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:26:44,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:26:44,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477845486] [2020-12-22 16:26:44,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:26:44,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:26:44,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:26:44,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:26:44,408 INFO L87 Difference]: Start difference. First operand 32721 states and 39182 transitions. Second operand 4 states. [2020-12-22 16:26:48,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:26:48,628 INFO L93 Difference]: Finished difference Result 65411 states and 78330 transitions. [2020-12-22 16:26:48,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:26:48,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 16:26:48,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:26:48,671 INFO L225 Difference]: With dead ends: 65411 [2020-12-22 16:26:48,671 INFO L226 Difference]: Without dead ends: 32721 [2020-12-22 16:26:48,706 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 16:26:48,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32721 states. [2020-12-22 16:26:51,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32721 to 32721. [2020-12-22 16:26:51,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32721 states. [2020-12-22 16:26:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32721 states to 32721 states and 39166 transitions. [2020-12-22 16:26:51,170 INFO L78 Accepts]: Start accepts. Automaton has 32721 states and 39166 transitions. Word has length 62 [2020-12-22 16:26:51,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:26:51,170 INFO L481 AbstractCegarLoop]: Abstraction has 32721 states and 39166 transitions. [2020-12-22 16:26:51,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:26:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand 32721 states and 39166 transitions. [2020-12-22 16:26:51,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 16:26:51,172 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:26:51,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:51,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 16:26:51,176 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:26:51,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:26:51,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1345772319, now seen corresponding path program 1 times [2020-12-22 16:26:51,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:26:51,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205334551] [2020-12-22 16:26:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:26:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:26:51,521 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 16:26:51,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205334551] [2020-12-22 16:26:51,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:26:51,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:26:51,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312397473] [2020-12-22 16:26:51,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:26:51,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:26:51,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:26:51,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:26:51,524 INFO L87 Difference]: Start difference. First operand 32721 states and 39166 transitions. Second operand 4 states. [2020-12-22 16:26:54,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:26:54,746 INFO L93 Difference]: Finished difference Result 65411 states and 78298 transitions. [2020-12-22 16:26:54,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:26:54,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 16:26:54,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:26:54,782 INFO L225 Difference]: With dead ends: 65411 [2020-12-22 16:26:54,782 INFO L226 Difference]: Without dead ends: 32721 [2020-12-22 16:26:54,811 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 16:26:54,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32721 states. [2020-12-22 16:26:57,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32721 to 32721. [2020-12-22 16:26:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32721 states. [2020-12-22 16:26:57,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32721 states to 32721 states and 39150 transitions. [2020-12-22 16:26:57,914 INFO L78 Accepts]: Start accepts. Automaton has 32721 states and 39150 transitions. Word has length 63 [2020-12-22 16:26:57,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:26:57,915 INFO L481 AbstractCegarLoop]: Abstraction has 32721 states and 39150 transitions. [2020-12-22 16:26:57,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:26:57,915 INFO L276 IsEmpty]: Start isEmpty. Operand 32721 states and 39150 transitions. [2020-12-22 16:26:57,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 16:26:57,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:26:57,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:57,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 16:26:57,917 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:26:57,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:26:57,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1232307357, now seen corresponding path program 1 times [2020-12-22 16:26:57,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:26:57,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771098811] [2020-12-22 16:26:57,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:26:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:26:58,133 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 16:26:58,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771098811] [2020-12-22 16:26:58,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:26:58,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:26:58,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480640306] [2020-12-22 16:26:58,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:26:58,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:26:58,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:26:58,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:26:58,136 INFO L87 Difference]: Start difference. First operand 32721 states and 39150 transitions. Second operand 4 states. [2020-12-22 16:27:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:27:01,534 INFO L93 Difference]: Finished difference Result 65411 states and 78266 transitions. [2020-12-22 16:27:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:27:01,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-22 16:27:01,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:27:01,583 INFO L225 Difference]: With dead ends: 65411 [2020-12-22 16:27:01,583 INFO L226 Difference]: Without dead ends: 32721 [2020-12-22 16:27:01,641 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 16:27:01,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32721 states. [2020-12-22 16:27:04,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32721 to 32721. [2020-12-22 16:27:04,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32721 states. [2020-12-22 16:27:04,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32721 states to 32721 states and 39134 transitions. [2020-12-22 16:27:04,499 INFO L78 Accepts]: Start accepts. Automaton has 32721 states and 39134 transitions. Word has length 64 [2020-12-22 16:27:04,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:27:04,499 INFO L481 AbstractCegarLoop]: Abstraction has 32721 states and 39134 transitions. [2020-12-22 16:27:04,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:27:04,499 INFO L276 IsEmpty]: Start isEmpty. Operand 32721 states and 39134 transitions. [2020-12-22 16:27:04,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 16:27:04,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:27:04,501 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:27:04,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 16:27:04,501 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:27:04,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:27:04,501 INFO L82 PathProgramCache]: Analyzing trace with hash -451452356, now seen corresponding path program 1 times [2020-12-22 16:27:04,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:27:04,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927303981] [2020-12-22 16:27:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:27:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:27:04,720 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 16:27:04,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927303981] [2020-12-22 16:27:04,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:27:04,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:27:04,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19526863] [2020-12-22 16:27:04,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:27:04,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:27:04,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:27:04,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:27:04,722 INFO L87 Difference]: Start difference. First operand 32721 states and 39134 transitions. Second operand 4 states. [2020-12-22 16:27:08,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:27:08,424 INFO L93 Difference]: Finished difference Result 65411 states and 78234 transitions. [2020-12-22 16:27:08,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:27:08,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 16:27:08,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:27:08,468 INFO L225 Difference]: With dead ends: 65411 [2020-12-22 16:27:08,469 INFO L226 Difference]: Without dead ends: 32721 [2020-12-22 16:27:08,503 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 16:27:08,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32721 states. [2020-12-22 16:27:11,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32721 to 32721. [2020-12-22 16:27:11,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32721 states. [2020-12-22 16:27:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32721 states to 32721 states and 39118 transitions. [2020-12-22 16:27:11,550 INFO L78 Accepts]: Start accepts. Automaton has 32721 states and 39118 transitions. Word has length 65 [2020-12-22 16:27:11,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:27:11,551 INFO L481 AbstractCegarLoop]: Abstraction has 32721 states and 39118 transitions. [2020-12-22 16:27:11,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:27:11,551 INFO L276 IsEmpty]: Start isEmpty. Operand 32721 states and 39118 transitions. [2020-12-22 16:27:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 16:27:11,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:27:11,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:27:11,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 16:27:11,552 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:27:11,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:27:11,553 INFO L82 PathProgramCache]: Analyzing trace with hash -451392774, now seen corresponding path program 1 times [2020-12-22 16:27:11,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:27:11,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685560202] [2020-12-22 16:27:11,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:27:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:27:11,794 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 16:27:11,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685560202] [2020-12-22 16:27:11,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:27:11,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 16:27:11,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896005499] [2020-12-22 16:27:11,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:27:11,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:27:11,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:27:11,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:27:11,796 INFO L87 Difference]: Start difference. First operand 32721 states and 39118 transitions. Second operand 4 states. [2020-12-22 16:27:20,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:27:20,861 INFO L93 Difference]: Finished difference Result 81434 states and 97369 transitions. [2020-12-22 16:27:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 16:27:20,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 16:27:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:27:20,954 INFO L225 Difference]: With dead ends: 81434 [2020-12-22 16:27:20,955 INFO L226 Difference]: Without dead ends: 81345 [2020-12-22 16:27:21,119 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 16:27:21,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81345 states. [2020-12-22 16:27:25,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81345 to 32671. [2020-12-22 16:27:25,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32671 states. [2020-12-22 16:27:25,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32671 states to 32671 states and 39045 transitions. [2020-12-22 16:27:25,307 INFO L78 Accepts]: Start accepts. Automaton has 32671 states and 39045 transitions. Word has length 65 [2020-12-22 16:27:25,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:27:25,307 INFO L481 AbstractCegarLoop]: Abstraction has 32671 states and 39045 transitions. [2020-12-22 16:27:25,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:27:25,307 INFO L276 IsEmpty]: Start isEmpty. Operand 32671 states and 39045 transitions. [2020-12-22 16:27:25,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 16:27:25,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:27:25,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:27:25,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 16:27:25,310 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:27:25,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:27:25,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1840970865, now seen corresponding path program 1 times [2020-12-22 16:27:25,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:27:25,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852000540] [2020-12-22 16:27:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:27:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:27:25,461 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 16:27:25,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852000540] [2020-12-22 16:27:25,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:27:25,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:27:25,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779159808] [2020-12-22 16:27:25,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:27:25,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:27:25,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:27:25,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:27:25,463 INFO L87 Difference]: Start difference. First operand 32671 states and 39045 transitions. Second operand 3 states. [2020-12-22 16:27:29,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:27:29,462 INFO L93 Difference]: Finished difference Result 33179 states and 39642 transitions. [2020-12-22 16:27:29,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:27:29,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 16:27:29,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:27:29,494 INFO L225 Difference]: With dead ends: 33179 [2020-12-22 16:27:29,494 INFO L226 Difference]: Without dead ends: 32671 [2020-12-22 16:27:29,501 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 16:27:29,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32671 states. [2020-12-22 16:27:33,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32671 to 32671. [2020-12-22 16:27:33,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32671 states. [2020-12-22 16:27:33,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32671 states to 32671 states and 39044 transitions. [2020-12-22 16:27:33,301 INFO L78 Accepts]: Start accepts. Automaton has 32671 states and 39044 transitions. Word has length 82 [2020-12-22 16:27:33,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:27:33,301 INFO L481 AbstractCegarLoop]: Abstraction has 32671 states and 39044 transitions. [2020-12-22 16:27:33,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:27:33,301 INFO L276 IsEmpty]: Start isEmpty. Operand 32671 states and 39044 transitions. [2020-12-22 16:27:33,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 16:27:33,304 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:27:33,304 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:27:33,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 16:27:33,305 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:27:33,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:27:33,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1999545676, now seen corresponding path program 1 times [2020-12-22 16:27:33,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:27:33,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240371399] [2020-12-22 16:27:33,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:27:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:27:33,547 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 16:27:33,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240371399] [2020-12-22 16:27:33,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:27:33,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:27:33,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656692922] [2020-12-22 16:27:33,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:27:33,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:27:33,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:27:33,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:27:33,549 INFO L87 Difference]: Start difference. First operand 32671 states and 39044 transitions. Second operand 3 states.