/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:28:11,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:28:11,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:28:11,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:28:11,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:28:11,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:28:11,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:28:11,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:28:11,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:28:11,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:28:11,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:28:11,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:28:11,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:28:11,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:28:11,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:28:11,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:28:11,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:28:11,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:28:11,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:28:12,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:28:12,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:28:12,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:28:12,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:28:12,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:28:12,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 13:28:12,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:28:12,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:28:12,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:28:12,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:28:12,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:28:12,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:28:12,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:28:12,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:28:12,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:28:12,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:28:12,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:28:12,038 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:28:12,097 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:28:12,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:28:12,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:28:12,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:28:12,100 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:28:12,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:28:12,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:28:12,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:28:12,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:28:12,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:28:12,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:28:12,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:28:12,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:28:12,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:28:12,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:28:12,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:28:12,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:28:12,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:28:12,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:28:12,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:28:12,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:28:12,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:28:12,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:28:12,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:28:12,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:28:12,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:28:12,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:28:12,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:28:12,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:28:12,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:28:12,518 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:28:12,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2020-12-22 13:28:12,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8f19fc2/ddf17619df4c485f877e8152f58022cd/FLAG95b452699 [2020-12-22 13:28:13,616 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:28:13,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2020-12-22 13:28:13,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8f19fc2/ddf17619df4c485f877e8152f58022cd/FLAG95b452699 [2020-12-22 13:28:14,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8f19fc2/ddf17619df4c485f877e8152f58022cd [2020-12-22 13:28:14,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:28:14,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:28:14,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:28:14,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:28:14,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:28:14,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:28:14" (1/1) ... [2020-12-22 13:28:14,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@524f564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:14, skipping insertion in model container [2020-12-22 13:28:14,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:28:14" (1/1) ... [2020-12-22 13:28:14,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:28:14,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:28:14,652 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2020-12-22 13:28:14,652 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2020-12-22 13:28:14,879 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2020-12-22 13:28:15,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:28:15,284 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:28:15,389 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2020-12-22 13:28:15,389 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2020-12-22 13:28:15,400 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2020-12-22 13:28:15,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:28:15,793 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:28:15,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:15 WrapperNode [2020-12-22 13:28:15,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:28:15,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:28:15,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:28:15,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:28:15,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:15" (1/1) ... [2020-12-22 13:28:15,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:15" (1/1) ... [2020-12-22 13:28:16,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:28:16,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:28:16,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:28:16,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:28:16,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:15" (1/1) ... [2020-12-22 13:28:16,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:15" (1/1) ... [2020-12-22 13:28:16,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:15" (1/1) ... [2020-12-22 13:28:16,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:15" (1/1) ... [2020-12-22 13:28:16,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:15" (1/1) ... [2020-12-22 13:28:16,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:15" (1/1) ... [2020-12-22 13:28:16,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:15" (1/1) ... [2020-12-22 13:28:16,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:28:16,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:28:16,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:28:16,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:28:16,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:28:16,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:28:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:28:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:28:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:28:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:28:16,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:28:16,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:28:16,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:28:16,610 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 13:28:16,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:28:16,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:28:16,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:28:16,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:28:16,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:28:16,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:28:16,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:28:23,069 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:28:23,071 INFO L299 CfgBuilder]: Removed 1042 assume(true) statements. [2020-12-22 13:28:23,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:28:23 BoogieIcfgContainer [2020-12-22 13:28:23,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:28:23,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:28:23,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:28:23,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:28:23,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:28:14" (1/3) ... [2020-12-22 13:28:23,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b71d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:28:23, skipping insertion in model container [2020-12-22 13:28:23,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:15" (2/3) ... [2020-12-22 13:28:23,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b71d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:28:23, skipping insertion in model container [2020-12-22 13:28:23,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:28:23" (3/3) ... [2020-12-22 13:28:23,083 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2020-12-22 13:28:23,090 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:28:23,096 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 13:28:23,115 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 13:28:23,148 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:28:23,149 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:28:23,149 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:28:23,149 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:28:23,149 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:28:23,149 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:28:23,150 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:28:23,150 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:28:23,184 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states. [2020-12-22 13:28:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 13:28:23,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:23,203 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 13:28:23,204 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:23,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:23,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1385985514, now seen corresponding path program 1 times [2020-12-22 13:28:23,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:23,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782169416] [2020-12-22 13:28:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:28:23,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782169416] [2020-12-22 13:28:23,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:23,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:28:23,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689855060] [2020-12-22 13:28:23,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 13:28:23,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:23,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 13:28:23,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:28:23,894 INFO L87 Difference]: Start difference. First operand 835 states. Second operand 2 states. [2020-12-22 13:28:24,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:24,056 INFO L93 Difference]: Finished difference Result 1667 states and 2311 transitions. [2020-12-22 13:28:24,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 13:28:24,058 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 62 [2020-12-22 13:28:24,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:24,088 INFO L225 Difference]: With dead ends: 1667 [2020-12-22 13:28:24,090 INFO L226 Difference]: Without dead ends: 823 [2020-12-22 13:28:24,102 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 13:28:24,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-12-22 13:28:24,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 823. [2020-12-22 13:28:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2020-12-22 13:28:24,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1122 transitions. [2020-12-22 13:28:24,225 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1122 transitions. Word has length 62 [2020-12-22 13:28:24,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:24,226 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1122 transitions. [2020-12-22 13:28:24,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 13:28:24,226 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1122 transitions. [2020-12-22 13:28:24,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 13:28:24,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:24,235 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 13:28:24,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:28:24,236 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:24,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:24,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1732742655, now seen corresponding path program 1 times [2020-12-22 13:28:24,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:24,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529845903] [2020-12-22 13:28:24,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:28:24,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529845903] [2020-12-22 13:28:24,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:24,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:28:24,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920748231] [2020-12-22 13:28:24,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:24,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:24,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:24,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:24,443 INFO L87 Difference]: Start difference. First operand 823 states and 1122 transitions. Second operand 3 states. [2020-12-22 13:28:24,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:24,547 INFO L93 Difference]: Finished difference Result 1664 states and 2273 transitions. [2020-12-22 13:28:24,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:24,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 13:28:24,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:24,552 INFO L225 Difference]: With dead ends: 1664 [2020-12-22 13:28:24,553 INFO L226 Difference]: Without dead ends: 844 [2020-12-22 13:28:24,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:24,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-12-22 13:28:24,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 841. [2020-12-22 13:28:24,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2020-12-22 13:28:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1149 transitions. [2020-12-22 13:28:24,581 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1149 transitions. Word has length 63 [2020-12-22 13:28:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:24,581 INFO L481 AbstractCegarLoop]: Abstraction has 841 states and 1149 transitions. [2020-12-22 13:28:24,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:24,582 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1149 transitions. [2020-12-22 13:28:24,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 13:28:24,585 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:24,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:24,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:28:24,586 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:24,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:24,587 INFO L82 PathProgramCache]: Analyzing trace with hash -2128587854, now seen corresponding path program 1 times [2020-12-22 13:28:24,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:24,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856225164] [2020-12-22 13:28:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:28:24,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856225164] [2020-12-22 13:28:24,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:24,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 13:28:24,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775997812] [2020-12-22 13:28:24,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:28:24,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:24,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:28:24,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:28:24,814 INFO L87 Difference]: Start difference. First operand 841 states and 1149 transitions. Second operand 6 states. [2020-12-22 13:28:25,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:25,550 INFO L93 Difference]: Finished difference Result 1769 states and 2432 transitions. [2020-12-22 13:28:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:28:25,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 13:28:25,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:25,556 INFO L225 Difference]: With dead ends: 1769 [2020-12-22 13:28:25,557 INFO L226 Difference]: Without dead ends: 931 [2020-12-22 13:28:25,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:28:25,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2020-12-22 13:28:25,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 901. [2020-12-22 13:28:25,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-12-22 13:28:25,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1239 transitions. [2020-12-22 13:28:25,599 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1239 transitions. Word has length 85 [2020-12-22 13:28:25,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:25,600 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1239 transitions. [2020-12-22 13:28:25,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:28:25,600 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1239 transitions. [2020-12-22 13:28:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 13:28:25,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:25,603 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:25,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:28:25,603 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:25,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:25,604 INFO L82 PathProgramCache]: Analyzing trace with hash 368041951, now seen corresponding path program 1 times [2020-12-22 13:28:25,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:25,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780305092] [2020-12-22 13:28:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:28:25,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780305092] [2020-12-22 13:28:25,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:25,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:28:25,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750356602] [2020-12-22 13:28:25,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:25,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:25,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:25,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:25,740 INFO L87 Difference]: Start difference. First operand 901 states and 1239 transitions. Second operand 3 states. [2020-12-22 13:28:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:25,842 INFO L93 Difference]: Finished difference Result 2695 states and 3708 transitions. [2020-12-22 13:28:25,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:25,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-22 13:28:25,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:25,853 INFO L225 Difference]: With dead ends: 2695 [2020-12-22 13:28:25,853 INFO L226 Difference]: Without dead ends: 1797 [2020-12-22 13:28:25,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:25,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2020-12-22 13:28:25,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 902. [2020-12-22 13:28:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2020-12-22 13:28:25,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1240 transitions. [2020-12-22 13:28:25,976 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1240 transitions. Word has length 99 [2020-12-22 13:28:25,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:25,976 INFO L481 AbstractCegarLoop]: Abstraction has 902 states and 1240 transitions. [2020-12-22 13:28:25,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:25,977 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1240 transitions. [2020-12-22 13:28:25,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 13:28:25,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:25,979 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:25,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:28:25,980 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:25,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:25,980 INFO L82 PathProgramCache]: Analyzing trace with hash -49354655, now seen corresponding path program 1 times [2020-12-22 13:28:25,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:25,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239756090] [2020-12-22 13:28:25,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 13:28:26,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239756090] [2020-12-22 13:28:26,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:26,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:28:26,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918702931] [2020-12-22 13:28:26,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:28:26,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:26,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:28:26,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:28:26,179 INFO L87 Difference]: Start difference. First operand 902 states and 1240 transitions. Second operand 4 states. [2020-12-22 13:28:26,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:26,345 INFO L93 Difference]: Finished difference Result 1986 states and 2748 transitions. [2020-12-22 13:28:26,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:28:26,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-12-22 13:28:26,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:26,355 INFO L225 Difference]: With dead ends: 1986 [2020-12-22 13:28:26,355 INFO L226 Difference]: Without dead ends: 1087 [2020-12-22 13:28:26,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:28:26,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-12-22 13:28:26,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 906. [2020-12-22 13:28:26,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-12-22 13:28:26,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1244 transitions. [2020-12-22 13:28:26,420 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1244 transitions. Word has length 99 [2020-12-22 13:28:26,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:26,422 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1244 transitions. [2020-12-22 13:28:26,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:28:26,422 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1244 transitions. [2020-12-22 13:28:26,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 13:28:26,431 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:26,432 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:26,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:28:26,432 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:26,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:26,433 INFO L82 PathProgramCache]: Analyzing trace with hash 899028749, now seen corresponding path program 1 times [2020-12-22 13:28:26,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:26,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262197400] [2020-12-22 13:28:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 13:28:26,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262197400] [2020-12-22 13:28:26,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:26,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:28:26,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884769127] [2020-12-22 13:28:26,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:26,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:26,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:26,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:26,720 INFO L87 Difference]: Start difference. First operand 906 states and 1244 transitions. Second operand 3 states. [2020-12-22 13:28:26,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:26,819 INFO L93 Difference]: Finished difference Result 1809 states and 2485 transitions. [2020-12-22 13:28:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:26,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 13:28:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:26,826 INFO L225 Difference]: With dead ends: 1809 [2020-12-22 13:28:26,826 INFO L226 Difference]: Without dead ends: 906 [2020-12-22 13:28:26,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-12-22 13:28:26,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 906. [2020-12-22 13:28:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-12-22 13:28:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1230 transitions. [2020-12-22 13:28:26,907 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1230 transitions. Word has length 107 [2020-12-22 13:28:26,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:26,908 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1230 transitions. [2020-12-22 13:28:26,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:26,908 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1230 transitions. [2020-12-22 13:28:26,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 13:28:26,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:26,910 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:26,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:28:26,911 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:26,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:26,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1716677199, now seen corresponding path program 1 times [2020-12-22 13:28:26,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:26,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010845166] [2020-12-22 13:28:26,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 13:28:27,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010845166] [2020-12-22 13:28:27,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:27,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:28:27,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61928332] [2020-12-22 13:28:27,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:27,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:27,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:27,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:27,118 INFO L87 Difference]: Start difference. First operand 906 states and 1230 transitions. Second operand 3 states. [2020-12-22 13:28:27,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:27,206 INFO L93 Difference]: Finished difference Result 1811 states and 2461 transitions. [2020-12-22 13:28:27,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:27,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 13:28:27,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:27,213 INFO L225 Difference]: With dead ends: 1811 [2020-12-22 13:28:27,214 INFO L226 Difference]: Without dead ends: 908 [2020-12-22 13:28:27,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:27,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-12-22 13:28:27,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 908. [2020-12-22 13:28:27,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2020-12-22 13:28:27,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1232 transitions. [2020-12-22 13:28:27,269 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1232 transitions. Word has length 107 [2020-12-22 13:28:27,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:27,270 INFO L481 AbstractCegarLoop]: Abstraction has 908 states and 1232 transitions. [2020-12-22 13:28:27,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:27,270 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1232 transitions. [2020-12-22 13:28:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 13:28:27,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:27,273 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:27,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:28:27,273 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:27,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:27,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1323650189, now seen corresponding path program 1 times [2020-12-22 13:28:27,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:27,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302618041] [2020-12-22 13:28:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:27,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 13:28:27,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302618041] [2020-12-22 13:28:27,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:27,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:28:27,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047562228] [2020-12-22 13:28:27,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:27,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:27,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:27,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:27,500 INFO L87 Difference]: Start difference. First operand 908 states and 1232 transitions. Second operand 3 states. [2020-12-22 13:28:28,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:28,091 INFO L93 Difference]: Finished difference Result 2628 states and 3582 transitions. [2020-12-22 13:28:28,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:28,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 13:28:28,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:28,103 INFO L225 Difference]: With dead ends: 2628 [2020-12-22 13:28:28,104 INFO L226 Difference]: Without dead ends: 1723 [2020-12-22 13:28:28,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:28,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-12-22 13:28:28,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 914. [2020-12-22 13:28:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-12-22 13:28:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1238 transitions. [2020-12-22 13:28:28,179 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1238 transitions. Word has length 107 [2020-12-22 13:28:28,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:28,179 INFO L481 AbstractCegarLoop]: Abstraction has 914 states and 1238 transitions. [2020-12-22 13:28:28,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:28,179 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1238 transitions. [2020-12-22 13:28:28,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 13:28:28,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:28,182 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:28,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:28:28,182 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:28,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:28,184 INFO L82 PathProgramCache]: Analyzing trace with hash 600820308, now seen corresponding path program 1 times [2020-12-22 13:28:28,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:28,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896822472] [2020-12-22 13:28:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 13:28:28,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896822472] [2020-12-22 13:28:28,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021115877] [2020-12-22 13:28:28,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:29,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:28:29,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 13:28:29,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:28:29,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 13:28:29,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152138917] [2020-12-22 13:28:29,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:29,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:29,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:29,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:28:29,355 INFO L87 Difference]: Start difference. First operand 914 states and 1238 transitions. Second operand 3 states. [2020-12-22 13:28:29,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:29,609 INFO L93 Difference]: Finished difference Result 2610 states and 3564 transitions. [2020-12-22 13:28:29,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:29,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-22 13:28:29,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:29,620 INFO L225 Difference]: With dead ends: 2610 [2020-12-22 13:28:29,620 INFO L226 Difference]: Without dead ends: 1699 [2020-12-22 13:28:29,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:28:29,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2020-12-22 13:28:29,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 950. [2020-12-22 13:28:29,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-12-22 13:28:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1286 transitions. [2020-12-22 13:28:29,700 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1286 transitions. Word has length 111 [2020-12-22 13:28:29,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:29,700 INFO L481 AbstractCegarLoop]: Abstraction has 950 states and 1286 transitions. [2020-12-22 13:28:29,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1286 transitions. [2020-12-22 13:28:29,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 13:28:29,703 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:29,704 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:29,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 13:28:29,919 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:29,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:29,921 INFO L82 PathProgramCache]: Analyzing trace with hash -839010496, now seen corresponding path program 1 times [2020-12-22 13:28:29,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:29,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081515981] [2020-12-22 13:28:29,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 13:28:30,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081515981] [2020-12-22 13:28:30,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368211388] [2020-12-22 13:28:30,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:30,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1670 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:28:30,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:28:30,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:28:30,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2020-12-22 13:28:30,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671826710] [2020-12-22 13:28:30,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:28:30,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:30,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:28:30,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:28:30,920 INFO L87 Difference]: Start difference. First operand 950 states and 1286 transitions. Second operand 5 states. [2020-12-22 13:28:31,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:31,259 INFO L93 Difference]: Finished difference Result 1900 states and 2573 transitions. [2020-12-22 13:28:31,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:28:31,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-12-22 13:28:31,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:31,265 INFO L225 Difference]: With dead ends: 1900 [2020-12-22 13:28:31,265 INFO L226 Difference]: Without dead ends: 948 [2020-12-22 13:28:31,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:28:31,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2020-12-22 13:28:31,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 948. [2020-12-22 13:28:31,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-12-22 13:28:31,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1283 transitions. [2020-12-22 13:28:31,355 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1283 transitions. Word has length 116 [2020-12-22 13:28:31,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:31,355 INFO L481 AbstractCegarLoop]: Abstraction has 948 states and 1283 transitions. [2020-12-22 13:28:31,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:28:31,355 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1283 transitions. [2020-12-22 13:28:31,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 13:28:31,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:31,358 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:31,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 13:28:31,574 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:31,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:31,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1898073031, now seen corresponding path program 1 times [2020-12-22 13:28:31,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:31,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959884829] [2020-12-22 13:28:31,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 13:28:31,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959884829] [2020-12-22 13:28:31,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118769763] [2020-12-22 13:28:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:32,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:28:32,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:32,620 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 13:28:32,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:28:32,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 13:28:32,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186947037] [2020-12-22 13:28:32,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:28:32,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:32,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:28:32,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:28:32,623 INFO L87 Difference]: Start difference. First operand 948 states and 1283 transitions. Second operand 5 states. [2020-12-22 13:28:33,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:33,562 INFO L93 Difference]: Finished difference Result 3549 states and 4829 transitions. [2020-12-22 13:28:33,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:28:33,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-12-22 13:28:33,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:33,580 INFO L225 Difference]: With dead ends: 3549 [2020-12-22 13:28:33,580 INFO L226 Difference]: Without dead ends: 2604 [2020-12-22 13:28:33,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:28:33,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2020-12-22 13:28:33,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 1014. [2020-12-22 13:28:33,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2020-12-22 13:28:33,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1361 transitions. [2020-12-22 13:28:33,700 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1361 transitions. Word has length 116 [2020-12-22 13:28:33,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:33,701 INFO L481 AbstractCegarLoop]: Abstraction has 1014 states and 1361 transitions. [2020-12-22 13:28:33,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:28:33,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1361 transitions. [2020-12-22 13:28:33,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-22 13:28:33,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:33,705 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:33,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 13:28:33,921 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:33,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:33,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1070580320, now seen corresponding path program 1 times [2020-12-22 13:28:33,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:33,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758025924] [2020-12-22 13:28:33,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 13:28:34,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758025924] [2020-12-22 13:28:34,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:34,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:28:34,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19880966] [2020-12-22 13:28:34,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:28:34,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:34,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:28:34,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:28:34,120 INFO L87 Difference]: Start difference. First operand 1014 states and 1361 transitions. Second operand 4 states. [2020-12-22 13:28:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:34,315 INFO L93 Difference]: Finished difference Result 2208 states and 2979 transitions. [2020-12-22 13:28:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:28:34,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-12-22 13:28:34,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:34,322 INFO L225 Difference]: With dead ends: 2208 [2020-12-22 13:28:34,322 INFO L226 Difference]: Without dead ends: 1197 [2020-12-22 13:28:34,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:28:34,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2020-12-22 13:28:34,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1014. [2020-12-22 13:28:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2020-12-22 13:28:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1361 transitions. [2020-12-22 13:28:34,414 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1361 transitions. Word has length 120 [2020-12-22 13:28:34,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:34,414 INFO L481 AbstractCegarLoop]: Abstraction has 1014 states and 1361 transitions. [2020-12-22 13:28:34,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:28:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1361 transitions. [2020-12-22 13:28:34,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 13:28:34,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:34,418 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:34,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 13:28:34,418 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:34,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:34,419 INFO L82 PathProgramCache]: Analyzing trace with hash 719046718, now seen corresponding path program 1 times [2020-12-22 13:28:34,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:34,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272828667] [2020-12-22 13:28:34,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 13:28:34,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272828667] [2020-12-22 13:28:34,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254530835] [2020-12-22 13:28:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:35,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:28:35,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 13:28:35,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:28:35,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 13:28:35,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170332858] [2020-12-22 13:28:35,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:28:35,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:35,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:28:35,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:28:35,429 INFO L87 Difference]: Start difference. First operand 1014 states and 1361 transitions. Second operand 6 states. [2020-12-22 13:28:36,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:36,391 INFO L93 Difference]: Finished difference Result 4458 states and 6055 transitions. [2020-12-22 13:28:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:28:36,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-12-22 13:28:36,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:36,411 INFO L225 Difference]: With dead ends: 4458 [2020-12-22 13:28:36,411 INFO L226 Difference]: Without dead ends: 3447 [2020-12-22 13:28:36,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:28:36,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2020-12-22 13:28:36,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 1098. [2020-12-22 13:28:36,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1098 states. [2020-12-22 13:28:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1469 transitions. [2020-12-22 13:28:36,519 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1469 transitions. Word has length 121 [2020-12-22 13:28:36,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:36,519 INFO L481 AbstractCegarLoop]: Abstraction has 1098 states and 1469 transitions. [2020-12-22 13:28:36,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:28:36,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1469 transitions. [2020-12-22 13:28:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-12-22 13:28:36,523 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:36,523 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:36,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:36,738 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:36,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:36,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1324886871, now seen corresponding path program 2 times [2020-12-22 13:28:36,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:36,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541735817] [2020-12-22 13:28:36,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 13:28:36,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541735817] [2020-12-22 13:28:36,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658156828] [2020-12-22 13:28:36,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:37,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:28:37,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:28:37,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:28:37,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-22 13:28:38,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:28:38,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2020-12-22 13:28:38,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449556614] [2020-12-22 13:28:38,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:38,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:38,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:38,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:28:38,111 INFO L87 Difference]: Start difference. First operand 1098 states and 1469 transitions. Second operand 3 states. [2020-12-22 13:28:38,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:38,292 INFO L93 Difference]: Finished difference Result 2197 states and 2941 transitions. [2020-12-22 13:28:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:38,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-12-22 13:28:38,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:38,306 INFO L225 Difference]: With dead ends: 2197 [2020-12-22 13:28:38,307 INFO L226 Difference]: Without dead ends: 1102 [2020-12-22 13:28:38,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:28:38,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2020-12-22 13:28:38,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1102. [2020-12-22 13:28:38,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-12-22 13:28:38,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1473 transitions. [2020-12-22 13:28:38,460 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1473 transitions. Word has length 125 [2020-12-22 13:28:38,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:38,460 INFO L481 AbstractCegarLoop]: Abstraction has 1102 states and 1473 transitions. [2020-12-22 13:28:38,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:38,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1473 transitions. [2020-12-22 13:28:38,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 13:28:38,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:38,464 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:38,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 13:28:38,679 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:38,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:38,680 INFO L82 PathProgramCache]: Analyzing trace with hash 935585522, now seen corresponding path program 1 times [2020-12-22 13:28:38,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:38,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547436216] [2020-12-22 13:28:38,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 13:28:38,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547436216] [2020-12-22 13:28:38,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199318149] [2020-12-22 13:28:38,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:39,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:28:39,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 13:28:39,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:28:39,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 13:28:39,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105338120] [2020-12-22 13:28:39,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:28:39,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:39,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:28:39,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:28:39,765 INFO L87 Difference]: Start difference. First operand 1102 states and 1473 transitions. Second operand 7 states. [2020-12-22 13:28:41,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:41,246 INFO L93 Difference]: Finished difference Result 5409 states and 7335 transitions. [2020-12-22 13:28:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:28:41,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-12-22 13:28:41,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:41,272 INFO L225 Difference]: With dead ends: 5409 [2020-12-22 13:28:41,272 INFO L226 Difference]: Without dead ends: 4310 [2020-12-22 13:28:41,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:28:41,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4310 states. [2020-12-22 13:28:41,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4310 to 1186. [2020-12-22 13:28:41,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1186 states. [2020-12-22 13:28:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1581 transitions. [2020-12-22 13:28:41,442 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1581 transitions. Word has length 127 [2020-12-22 13:28:41,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:41,442 INFO L481 AbstractCegarLoop]: Abstraction has 1186 states and 1581 transitions. [2020-12-22 13:28:41,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:28:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1581 transitions. [2020-12-22 13:28:41,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 13:28:41,446 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:41,447 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:41,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:41,660 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:41,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:41,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1485426699, now seen corresponding path program 2 times [2020-12-22 13:28:41,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:41,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769384507] [2020-12-22 13:28:41,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 13:28:41,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769384507] [2020-12-22 13:28:41,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506798310] [2020-12-22 13:28:41,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:42,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:28:42,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:28:42,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:28:42,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-22 13:28:42,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:28:42,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2020-12-22 13:28:42,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189566182] [2020-12-22 13:28:42,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:42,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:42,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:42,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:28:42,992 INFO L87 Difference]: Start difference. First operand 1186 states and 1581 transitions. Second operand 3 states. [2020-12-22 13:28:43,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:43,200 INFO L93 Difference]: Finished difference Result 2514 states and 3367 transitions. [2020-12-22 13:28:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:43,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2020-12-22 13:28:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:43,208 INFO L225 Difference]: With dead ends: 2514 [2020-12-22 13:28:43,208 INFO L226 Difference]: Without dead ends: 1331 [2020-12-22 13:28:43,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:28:43,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2020-12-22 13:28:43,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1188. [2020-12-22 13:28:43,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2020-12-22 13:28:43,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1583 transitions. [2020-12-22 13:28:43,347 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1583 transitions. Word has length 131 [2020-12-22 13:28:43,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:43,348 INFO L481 AbstractCegarLoop]: Abstraction has 1188 states and 1583 transitions. [2020-12-22 13:28:43,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:43,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1583 transitions. [2020-12-22 13:28:43,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 13:28:43,351 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:43,352 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:43,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 13:28:43,566 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:43,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:43,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1562327497, now seen corresponding path program 1 times [2020-12-22 13:28:43,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:43,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559379194] [2020-12-22 13:28:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 13:28:43,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559379194] [2020-12-22 13:28:43,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632026564] [2020-12-22 13:28:43,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:44,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1747 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 13:28:44,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 13:28:44,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:28:44,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 13:28:44,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359005532] [2020-12-22 13:28:44,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:28:44,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:44,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:28:44,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:28:44,518 INFO L87 Difference]: Start difference. First operand 1188 states and 1583 transitions. Second operand 8 states. [2020-12-22 13:28:46,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:46,196 INFO L93 Difference]: Finished difference Result 6270 states and 8501 transitions. [2020-12-22 13:28:46,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:28:46,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 131 [2020-12-22 13:28:46,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:46,213 INFO L225 Difference]: With dead ends: 6270 [2020-12-22 13:28:46,213 INFO L226 Difference]: Without dead ends: 5085 [2020-12-22 13:28:46,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:28:46,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5085 states. [2020-12-22 13:28:46,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5085 to 1272. [2020-12-22 13:28:46,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2020-12-22 13:28:46,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1691 transitions. [2020-12-22 13:28:46,367 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1691 transitions. Word has length 131 [2020-12-22 13:28:46,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:46,367 INFO L481 AbstractCegarLoop]: Abstraction has 1272 states and 1691 transitions. [2020-12-22 13:28:46,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:28:46,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1691 transitions. [2020-12-22 13:28:46,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-22 13:28:46,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:46,371 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:46,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 13:28:46,587 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:46,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:46,588 INFO L82 PathProgramCache]: Analyzing trace with hash -406724766, now seen corresponding path program 2 times [2020-12-22 13:28:46,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:46,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849353686] [2020-12-22 13:28:46,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 13:28:46,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849353686] [2020-12-22 13:28:46,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158810777] [2020-12-22 13:28:46,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:47,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:28:47,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:28:47,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 13:28:47,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-12-22 13:28:47,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:28:47,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-12-22 13:28:47,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516592215] [2020-12-22 13:28:47,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:28:47,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:47,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:28:47,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:28:47,945 INFO L87 Difference]: Start difference. First operand 1272 states and 1691 transitions. Second operand 4 states. [2020-12-22 13:28:48,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:48,306 INFO L93 Difference]: Finished difference Result 2957 states and 3965 transitions. [2020-12-22 13:28:48,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:28:48,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-12-22 13:28:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:48,320 INFO L225 Difference]: With dead ends: 2957 [2020-12-22 13:28:48,320 INFO L226 Difference]: Without dead ends: 1688 [2020-12-22 13:28:48,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:28:48,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2020-12-22 13:28:48,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1276. [2020-12-22 13:28:48,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-12-22 13:28:48,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1695 transitions. [2020-12-22 13:28:48,461 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1695 transitions. Word has length 135 [2020-12-22 13:28:48,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:48,461 INFO L481 AbstractCegarLoop]: Abstraction has 1276 states and 1695 transitions. [2020-12-22 13:28:48,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:28:48,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1695 transitions. [2020-12-22 13:28:48,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 13:28:48,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:48,466 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:48,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 13:28:48,682 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:48,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:48,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1721218688, now seen corresponding path program 1 times [2020-12-22 13:28:48,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:48,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401693630] [2020-12-22 13:28:48,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:48,927 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 13:28:48,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401693630] [2020-12-22 13:28:48,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491935924] [2020-12-22 13:28:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:50,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 13:28:50,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 13:28:50,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:28:50,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 13:28:50,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971241191] [2020-12-22 13:28:50,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:28:50,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:50,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:28:50,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:28:50,340 INFO L87 Difference]: Start difference. First operand 1276 states and 1695 transitions. Second operand 5 states. [2020-12-22 13:28:50,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:50,510 INFO L93 Difference]: Finished difference Result 2553 states and 3393 transitions. [2020-12-22 13:28:50,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:28:50,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-12-22 13:28:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:50,515 INFO L225 Difference]: With dead ends: 2553 [2020-12-22 13:28:50,515 INFO L226 Difference]: Without dead ends: 1280 [2020-12-22 13:28:50,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:28:50,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2020-12-22 13:28:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1280. [2020-12-22 13:28:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1280 states. [2020-12-22 13:28:50,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1699 transitions. [2020-12-22 13:28:50,647 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1699 transitions. Word has length 138 [2020-12-22 13:28:50,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:50,648 INFO L481 AbstractCegarLoop]: Abstraction has 1280 states and 1699 transitions. [2020-12-22 13:28:50,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:28:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1699 transitions. [2020-12-22 13:28:50,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 13:28:50,652 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:50,652 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:50,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:50,866 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:50,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:50,868 INFO L82 PathProgramCache]: Analyzing trace with hash 591195845, now seen corresponding path program 2 times [2020-12-22 13:28:50,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:50,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055514399] [2020-12-22 13:28:50,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 13:28:51,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055514399] [2020-12-22 13:28:51,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804971107] [2020-12-22 13:28:51,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:29:17,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:29:17,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:29:17,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 13:29:17,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:29:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 13:29:17,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:29:17,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 13:29:17,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969178989] [2020-12-22 13:29:17,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:29:17,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:29:17,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:29:17,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:29:17,406 INFO L87 Difference]: Start difference. First operand 1280 states and 1699 transitions. Second operand 6 states. [2020-12-22 13:29:17,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:29:17,595 INFO L93 Difference]: Finished difference Result 2561 states and 3401 transitions. [2020-12-22 13:29:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:29:17,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-12-22 13:29:17,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:29:17,600 INFO L225 Difference]: With dead ends: 2561 [2020-12-22 13:29:17,600 INFO L226 Difference]: Without dead ends: 1284 [2020-12-22 13:29:17,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:29:17,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2020-12-22 13:29:17,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1284. [2020-12-22 13:29:17,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1284 states. [2020-12-22 13:29:17,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1703 transitions. [2020-12-22 13:29:17,734 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1703 transitions. Word has length 140 [2020-12-22 13:29:17,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:29:17,734 INFO L481 AbstractCegarLoop]: Abstraction has 1284 states and 1703 transitions. [2020-12-22 13:29:17,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:29:17,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1703 transitions. [2020-12-22 13:29:17,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 13:29:17,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:29:17,738 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:29:17,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:29:17,953 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:29:17,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:29:17,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1265969610, now seen corresponding path program 3 times [2020-12-22 13:29:17,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:29:17,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607994499] [2020-12-22 13:29:17,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:29:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:29:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 13:29:18,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607994499] [2020-12-22 13:29:18,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216179915] [2020-12-22 13:29:18,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:30:28,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-22 13:30:28,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:30:28,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 13:30:28,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:30:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 13:30:28,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:30:28,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 13:30:28,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732013341] [2020-12-22 13:30:28,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:30:28,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:30:28,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:30:28,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:30:28,729 INFO L87 Difference]: Start difference. First operand 1284 states and 1703 transitions. Second operand 7 states. [2020-12-22 13:30:29,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:30:29,027 INFO L93 Difference]: Finished difference Result 2569 states and 3409 transitions. [2020-12-22 13:30:29,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:30:29,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-12-22 13:30:29,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:30:29,033 INFO L225 Difference]: With dead ends: 2569 [2020-12-22 13:30:29,033 INFO L226 Difference]: Without dead ends: 1288 [2020-12-22 13:30:29,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:30:29,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2020-12-22 13:30:29,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2020-12-22 13:30:29,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2020-12-22 13:30:29,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1707 transitions. [2020-12-22 13:30:29,208 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1707 transitions. Word has length 142 [2020-12-22 13:30:29,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:30:29,208 INFO L481 AbstractCegarLoop]: Abstraction has 1288 states and 1707 transitions. [2020-12-22 13:30:29,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:30:29,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1707 transitions. [2020-12-22 13:30:29,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 13:30:29,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:30:29,213 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:30:29,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:30:29,415 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:30:29,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:30:29,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1183496079, now seen corresponding path program 4 times [2020-12-22 13:30:29,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:30:29,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036794947] [2020-12-22 13:30:29,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:30:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:30:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 13:30:29,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036794947] [2020-12-22 13:30:29,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246258063] [2020-12-22 13:30:29,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:30:31,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 13:30:31,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:30:31,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 13:30:31,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:30:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 13:30:31,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:30:31,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 13:30:31,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219056689] [2020-12-22 13:30:31,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:30:31,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:30:31,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:30:31,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:30:31,627 INFO L87 Difference]: Start difference. First operand 1288 states and 1707 transitions. Second operand 8 states. [2020-12-22 13:30:31,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:30:31,861 INFO L93 Difference]: Finished difference Result 2577 states and 3417 transitions. [2020-12-22 13:30:31,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:30:31,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 144 [2020-12-22 13:30:31,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:30:31,865 INFO L225 Difference]: With dead ends: 2577 [2020-12-22 13:30:31,866 INFO L226 Difference]: Without dead ends: 1292 [2020-12-22 13:30:31,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:30:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2020-12-22 13:30:32,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1292. [2020-12-22 13:30:32,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-12-22 13:30:32,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1711 transitions. [2020-12-22 13:30:32,046 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1711 transitions. Word has length 144 [2020-12-22 13:30:32,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:30:32,046 INFO L481 AbstractCegarLoop]: Abstraction has 1292 states and 1711 transitions. [2020-12-22 13:30:32,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:30:32,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1711 transitions. [2020-12-22 13:30:32,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-12-22 13:30:32,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:30:32,051 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:30:32,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 13:30:32,265 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:30:32,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:30:32,265 INFO L82 PathProgramCache]: Analyzing trace with hash -764155884, now seen corresponding path program 5 times [2020-12-22 13:30:32,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:30:32,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419591985] [2020-12-22 13:30:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:30:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:30:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 13:30:32,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419591985] [2020-12-22 13:30:32,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808833001] [2020-12-22 13:30:32,533 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:30:36,730 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-22 13:30:36,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:30:36,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 13:30:36,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:30:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 13:30:36,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:30:36,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-22 13:30:36,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615646541] [2020-12-22 13:30:36,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 13:30:36,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:30:36,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 13:30:36,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:30:36,903 INFO L87 Difference]: Start difference. First operand 1292 states and 1711 transitions. Second operand 9 states. [2020-12-22 13:30:37,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:30:37,137 INFO L93 Difference]: Finished difference Result 2585 states and 3425 transitions. [2020-12-22 13:30:37,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:30:37,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 146 [2020-12-22 13:30:37,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:30:37,141 INFO L225 Difference]: With dead ends: 2585 [2020-12-22 13:30:37,141 INFO L226 Difference]: Without dead ends: 1296 [2020-12-22 13:30:37,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:30:37,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2020-12-22 13:30:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1296. [2020-12-22 13:30:37,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1296 states. [2020-12-22 13:30:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1715 transitions. [2020-12-22 13:30:37,264 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1715 transitions. Word has length 146 [2020-12-22 13:30:37,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:30:37,265 INFO L481 AbstractCegarLoop]: Abstraction has 1296 states and 1715 transitions. [2020-12-22 13:30:37,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 13:30:37,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1715 transitions. [2020-12-22 13:30:37,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 13:30:37,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:30:37,269 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:30:37,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:30:37,485 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:30:37,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:30:37,485 INFO L82 PathProgramCache]: Analyzing trace with hash 148048729, now seen corresponding path program 6 times [2020-12-22 13:30:37,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:30:37,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009894282] [2020-12-22 13:30:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:30:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:30:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 13:30:37,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009894282] [2020-12-22 13:30:37,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057717585] [2020-12-22 13:30:37,766 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true