/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-4.2-rc1/linux-4.2-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 15:13:01,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 15:13:01,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 15:13:01,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 15:13:01,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 15:13:01,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 15:13:01,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 15:13:01,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 15:13:01,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 15:13:01,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 15:13:01,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 15:13:01,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 15:13:01,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 15:13:01,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 15:13:01,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 15:13:01,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 15:13:01,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 15:13:02,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 15:13:02,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 15:13:02,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 15:13:02,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 15:13:02,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 15:13:02,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 15:13:02,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 15:13:02,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 15:13:02,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 15:13:02,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 15:13:02,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 15:13:02,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 15:13:02,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 15:13:02,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 15:13:02,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 15:13:02,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 15:13:02,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 15:13:02,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 15:13:02,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 15:13:02,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 15:13:02,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 15:13:02,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 15:13:02,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 15:13:02,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 15:13:02,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 15:13:02,055 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 15:13:02,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 15:13:02,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 15:13:02,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 15:13:02,057 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 15:13:02,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 15:13:02,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 15:13:02,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 15:13:02,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 15:13:02,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 15:13:02,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 15:13:02,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 15:13:02,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 15:13:02,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 15:13:02,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 15:13:02,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 15:13:02,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 15:13:02,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:13:02,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 15:13:02,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 15:13:02,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 15:13:02,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 15:13:02,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 15:13:02,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 15:13:02,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 15:13:02,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 15:13:02,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 15:13:02,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 15:13:02,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 15:13:02,437 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 15:13:02,438 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 15:13:02,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2020-12-22 15:13:02,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cafe2d70f/41eb99300da74403ae0984a0c5cc5152/FLAGf12c7409f [2020-12-22 15:13:03,546 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 15:13:03,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2020-12-22 15:13:03,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cafe2d70f/41eb99300da74403ae0984a0c5cc5152/FLAGf12c7409f [2020-12-22 15:13:04,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cafe2d70f/41eb99300da74403ae0984a0c5cc5152 [2020-12-22 15:13:04,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 15:13:04,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 15:13:04,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 15:13:04,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 15:13:04,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 15:13:04,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:13:04" (1/1) ... [2020-12-22 15:13:04,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d1e147d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:13:04, skipping insertion in model container [2020-12-22 15:13:04,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:13:04" (1/1) ... [2020-12-22 15:13:04,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 15:13:04,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 15:13:05,511 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2020-12-22 15:13:05,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:13:05,620 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 15:13:05,928 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2020-12-22 15:13:05,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:13:06,092 INFO L208 MainTranslator]: Completed translation [2020-12-22 15:13:06,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:13:06 WrapperNode [2020-12-22 15:13:06,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 15:13:06,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 15:13:06,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 15:13:06,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 15:13:06,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:13:06" (1/1) ... [2020-12-22 15:13:06,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:13:06" (1/1) ... [2020-12-22 15:13:06,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 15:13:06,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 15:13:06,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 15:13:06,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 15:13:06,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:13:06" (1/1) ... [2020-12-22 15:13:06,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:13:06" (1/1) ... [2020-12-22 15:13:06,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:13:06" (1/1) ... [2020-12-22 15:13:06,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:13:06" (1/1) ... [2020-12-22 15:13:06,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:13:06" (1/1) ... [2020-12-22 15:13:06,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:13:06" (1/1) ... [2020-12-22 15:13:06,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:13:06" (1/1) ... [2020-12-22 15:13:06,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 15:13:06,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 15:13:06,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 15:13:06,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 15:13:06,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:13:06" (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 15:13:06,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 15:13:06,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 15:13:06,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 15:13:06,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 15:13:06,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 15:13:06,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 15:13:06,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 15:13:06,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 15:13:06,730 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 15:13:06,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 15:13:06,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 15:13:06,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 15:13:06,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 15:13:06,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 15:13:06,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 15:13:06,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 15:13:13,030 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 15:13:13,031 INFO L299 CfgBuilder]: Removed 938 assume(true) statements. [2020-12-22 15:13:13,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:13:13 BoogieIcfgContainer [2020-12-22 15:13:13,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 15:13:13,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 15:13:13,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 15:13:13,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 15:13:13,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:13:04" (1/3) ... [2020-12-22 15:13:13,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff8ceaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:13:13, skipping insertion in model container [2020-12-22 15:13:13,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:13:06" (2/3) ... [2020-12-22 15:13:13,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff8ceaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:13:13, skipping insertion in model container [2020-12-22 15:13:13,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:13:13" (3/3) ... [2020-12-22 15:13:13,043 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2020-12-22 15:13:13,050 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 15:13:13,056 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 15:13:13,076 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 15:13:13,109 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 15:13:13,109 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 15:13:13,109 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 15:13:13,109 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 15:13:13,110 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 15:13:13,110 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 15:13:13,110 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 15:13:13,110 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 15:13:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states. [2020-12-22 15:13:13,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 15:13:13,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:13,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:13,161 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 15:13:13,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:13,168 INFO L82 PathProgramCache]: Analyzing trace with hash -453684691, now seen corresponding path program 1 times [2020-12-22 15:13:13,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:13,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226990631] [2020-12-22 15:13:13,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:13,797 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 15:13:13,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226990631] [2020-12-22 15:13:13,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:13:13,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:13:13,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096874628] [2020-12-22 15:13:13,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 15:13:13,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:13,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 15:13:13,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 15:13:13,828 INFO L87 Difference]: Start difference. First operand 750 states. Second operand 2 states. [2020-12-22 15:13:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:13,953 INFO L93 Difference]: Finished difference Result 1482 states and 2059 transitions. [2020-12-22 15:13:13,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 15:13:13,955 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2020-12-22 15:13:13,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:13,984 INFO L225 Difference]: With dead ends: 1482 [2020-12-22 15:13:13,985 INFO L226 Difference]: Without dead ends: 738 [2020-12-22 15:13:13,995 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 15:13:14,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2020-12-22 15:13:14,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2020-12-22 15:13:14,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-12-22 15:13:14,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1006 transitions. [2020-12-22 15:13:14,114 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1006 transitions. Word has length 74 [2020-12-22 15:13:14,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:14,115 INFO L481 AbstractCegarLoop]: Abstraction has 738 states and 1006 transitions. [2020-12-22 15:13:14,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 15:13:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1006 transitions. [2020-12-22 15:13:14,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 15:13:14,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:14,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:14,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 15:13:14,129 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 15:13:14,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:14,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1696617127, now seen corresponding path program 1 times [2020-12-22 15:13:14,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:14,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378680470] [2020-12-22 15:13:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:14,410 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 15:13:14,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378680470] [2020-12-22 15:13:14,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:13:14,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:13:14,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274795137] [2020-12-22 15:13:14,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:13:14,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:14,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:13:14,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:13:14,415 INFO L87 Difference]: Start difference. First operand 738 states and 1006 transitions. Second operand 3 states. [2020-12-22 15:13:14,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:14,536 INFO L93 Difference]: Finished difference Result 1479 states and 2021 transitions. [2020-12-22 15:13:14,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:13:14,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 15:13:14,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:14,541 INFO L225 Difference]: With dead ends: 1479 [2020-12-22 15:13:14,542 INFO L226 Difference]: Without dead ends: 759 [2020-12-22 15:13:14,545 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 15:13:14,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-12-22 15:13:14,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 756. [2020-12-22 15:13:14,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2020-12-22 15:13:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1033 transitions. [2020-12-22 15:13:14,570 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1033 transitions. Word has length 75 [2020-12-22 15:13:14,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:14,572 INFO L481 AbstractCegarLoop]: Abstraction has 756 states and 1033 transitions. [2020-12-22 15:13:14,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:13:14,572 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1033 transitions. [2020-12-22 15:13:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 15:13:14,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:14,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:14,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 15:13:14,577 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 15:13:14,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:14,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1668587877, now seen corresponding path program 1 times [2020-12-22 15:13:14,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:14,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925969711] [2020-12-22 15:13:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:14,809 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 15:13:14,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925969711] [2020-12-22 15:13:14,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:13:14,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:13:14,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214557270] [2020-12-22 15:13:14,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:13:14,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:14,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:13:14,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:13:14,812 INFO L87 Difference]: Start difference. First operand 756 states and 1033 transitions. Second operand 3 states. [2020-12-22 15:13:15,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:15,280 INFO L93 Difference]: Finished difference Result 1527 states and 2097 transitions. [2020-12-22 15:13:15,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:13:15,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-12-22 15:13:15,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:15,285 INFO L225 Difference]: With dead ends: 1527 [2020-12-22 15:13:15,285 INFO L226 Difference]: Without dead ends: 789 [2020-12-22 15:13:15,287 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 15:13:15,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2020-12-22 15:13:15,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 786. [2020-12-22 15:13:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 786 states. [2020-12-22 15:13:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1077 transitions. [2020-12-22 15:13:15,306 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1077 transitions. Word has length 101 [2020-12-22 15:13:15,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:15,307 INFO L481 AbstractCegarLoop]: Abstraction has 786 states and 1077 transitions. [2020-12-22 15:13:15,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:13:15,307 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1077 transitions. [2020-12-22 15:13:15,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 15:13:15,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:15,309 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] [2020-12-22 15:13:15,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 15:13:15,309 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 15:13:15,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:15,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1271589435, now seen corresponding path program 1 times [2020-12-22 15:13:15,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:15,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043595504] [2020-12-22 15:13:15,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:15,509 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 15:13:15,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043595504] [2020-12-22 15:13:15,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:13:15,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:13:15,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285253958] [2020-12-22 15:13:15,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:13:15,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:15,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:13:15,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:13:15,512 INFO L87 Difference]: Start difference. First operand 786 states and 1077 transitions. Second operand 3 states. [2020-12-22 15:13:15,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:15,574 INFO L93 Difference]: Finished difference Result 2320 states and 3182 transitions. [2020-12-22 15:13:15,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:13:15,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2020-12-22 15:13:15,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:15,583 INFO L225 Difference]: With dead ends: 2320 [2020-12-22 15:13:15,584 INFO L226 Difference]: Without dead ends: 1552 [2020-12-22 15:13:15,586 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 15:13:15,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2020-12-22 15:13:15,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 787. [2020-12-22 15:13:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2020-12-22 15:13:15,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1078 transitions. [2020-12-22 15:13:15,613 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1078 transitions. Word has length 115 [2020-12-22 15:13:15,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:15,614 INFO L481 AbstractCegarLoop]: Abstraction has 787 states and 1078 transitions. [2020-12-22 15:13:15,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:13:15,614 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1078 transitions. [2020-12-22 15:13:15,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 15:13:15,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:15,616 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] [2020-12-22 15:13:15,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 15:13:15,617 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 15:13:15,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:15,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1069765501, now seen corresponding path program 1 times [2020-12-22 15:13:15,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:15,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675861775] [2020-12-22 15:13:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:15,850 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 15:13:15,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675861775] [2020-12-22 15:13:15,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:13:15,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:13:15,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468566262] [2020-12-22 15:13:15,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:13:15,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:15,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:13:15,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:13:15,853 INFO L87 Difference]: Start difference. First operand 787 states and 1078 transitions. Second operand 3 states. [2020-12-22 15:13:15,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:15,910 INFO L93 Difference]: Finished difference Result 1558 states and 2137 transitions. [2020-12-22 15:13:15,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:13:15,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2020-12-22 15:13:15,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:15,919 INFO L225 Difference]: With dead ends: 1558 [2020-12-22 15:13:15,919 INFO L226 Difference]: Without dead ends: 789 [2020-12-22 15:13:15,921 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 15:13:15,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2020-12-22 15:13:15,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 789. [2020-12-22 15:13:15,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-12-22 15:13:15,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1080 transitions. [2020-12-22 15:13:15,948 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1080 transitions. Word has length 115 [2020-12-22 15:13:15,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:15,949 INFO L481 AbstractCegarLoop]: Abstraction has 789 states and 1080 transitions. [2020-12-22 15:13:15,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:13:15,949 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1080 transitions. [2020-12-22 15:13:15,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 15:13:15,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:15,951 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] [2020-12-22 15:13:15,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 15:13:15,952 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 15:13:15,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:15,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1462792511, now seen corresponding path program 1 times [2020-12-22 15:13:15,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:15,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757846938] [2020-12-22 15:13:15,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:16,217 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 15:13:16,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757846938] [2020-12-22 15:13:16,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:13:16,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:13:16,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332374275] [2020-12-22 15:13:16,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:13:16,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:16,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:13:16,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:13:16,220 INFO L87 Difference]: Start difference. First operand 789 states and 1080 transitions. Second operand 3 states. [2020-12-22 15:13:16,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:16,674 INFO L93 Difference]: Finished difference Result 2247 states and 3092 transitions. [2020-12-22 15:13:16,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:13:16,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2020-12-22 15:13:16,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:16,686 INFO L225 Difference]: With dead ends: 2247 [2020-12-22 15:13:16,687 INFO L226 Difference]: Without dead ends: 1476 [2020-12-22 15:13:16,689 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 15:13:16,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-12-22 15:13:16,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 795. [2020-12-22 15:13:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-12-22 15:13:16,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1086 transitions. [2020-12-22 15:13:16,722 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1086 transitions. Word has length 115 [2020-12-22 15:13:16,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:16,723 INFO L481 AbstractCegarLoop]: Abstraction has 795 states and 1086 transitions. [2020-12-22 15:13:16,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:13:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1086 transitions. [2020-12-22 15:13:16,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 15:13:16,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:16,730 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, 1, 1, 1] [2020-12-22 15:13:16,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 15:13:16,730 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 15:13:16,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:16,731 INFO L82 PathProgramCache]: Analyzing trace with hash 556019336, now seen corresponding path program 1 times [2020-12-22 15:13:16,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:16,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502240142] [2020-12-22 15:13:16,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:16,961 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 15:13:16,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502240142] [2020-12-22 15:13:16,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156125885] [2020-12-22 15:13:16,962 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 15:13:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:17,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 15:13:17,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:17,826 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 15:13:17,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:13:17,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 15:13:17,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864655324] [2020-12-22 15:13:17,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:13:17,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:17,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:13:17,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:13:17,829 INFO L87 Difference]: Start difference. First operand 795 states and 1086 transitions. Second operand 3 states. [2020-12-22 15:13:17,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:17,995 INFO L93 Difference]: Finished difference Result 2229 states and 3074 transitions. [2020-12-22 15:13:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:13:17,996 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2020-12-22 15:13:17,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:18,004 INFO L225 Difference]: With dead ends: 2229 [2020-12-22 15:13:18,004 INFO L226 Difference]: Without dead ends: 1452 [2020-12-22 15:13:18,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 15:13:18,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2020-12-22 15:13:18,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 831. [2020-12-22 15:13:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-12-22 15:13:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1134 transitions. [2020-12-22 15:13:18,033 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1134 transitions. Word has length 119 [2020-12-22 15:13:18,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:18,033 INFO L481 AbstractCegarLoop]: Abstraction has 831 states and 1134 transitions. [2020-12-22 15:13:18,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:13:18,034 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1134 transitions. [2020-12-22 15:13:18,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 15:13:18,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:18,036 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:18,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 15:13:18,251 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 15:13:18,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:18,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1859190524, now seen corresponding path program 1 times [2020-12-22 15:13:18,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:18,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83016508] [2020-12-22 15:13:18,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:18,493 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 15:13:18,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83016508] [2020-12-22 15:13:18,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326671972] [2020-12-22 15:13:18,494 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 15:13:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:19,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 15:13:19,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:19,476 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 15:13:19,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:13:19,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 15:13:19,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678077519] [2020-12-22 15:13:19,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:13:19,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:19,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:13:19,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:13:19,479 INFO L87 Difference]: Start difference. First operand 831 states and 1134 transitions. Second operand 5 states. [2020-12-22 15:13:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:20,196 INFO L93 Difference]: Finished difference Result 3048 states and 4185 transitions. [2020-12-22 15:13:20,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 15:13:20,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-12-22 15:13:20,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:20,211 INFO L225 Difference]: With dead ends: 3048 [2020-12-22 15:13:20,211 INFO L226 Difference]: Without dead ends: 2235 [2020-12-22 15:13:20,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 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 15:13:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2020-12-22 15:13:20,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 897. [2020-12-22 15:13:20,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-12-22 15:13:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1212 transitions. [2020-12-22 15:13:20,254 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1212 transitions. Word has length 124 [2020-12-22 15:13:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:20,254 INFO L481 AbstractCegarLoop]: Abstraction has 897 states and 1212 transitions. [2020-12-22 15:13:20,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:13:20,254 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1212 transitions. [2020-12-22 15:13:20,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 15:13:20,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:20,258 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:20,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:13:20,471 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 15:13:20,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:20,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1755959531, now seen corresponding path program 1 times [2020-12-22 15:13:20,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:20,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565817249] [2020-12-22 15:13:20,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:20,660 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 15:13:20,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565817249] [2020-12-22 15:13:20,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:13:20,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:13:20,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476534071] [2020-12-22 15:13:20,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:13:20,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:20,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:13:20,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:13:20,663 INFO L87 Difference]: Start difference. First operand 897 states and 1212 transitions. Second operand 4 states. [2020-12-22 15:13:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:20,798 INFO L93 Difference]: Finished difference Result 1923 states and 2614 transitions. [2020-12-22 15:13:20,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 15:13:20,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-12-22 15:13:20,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:20,804 INFO L225 Difference]: With dead ends: 1923 [2020-12-22 15:13:20,804 INFO L226 Difference]: Without dead ends: 1044 [2020-12-22 15:13:20,811 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 15:13:20,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-12-22 15:13:20,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 901. [2020-12-22 15:13:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-12-22 15:13:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1216 transitions. [2020-12-22 15:13:20,842 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1216 transitions. Word has length 128 [2020-12-22 15:13:20,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:20,842 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1216 transitions. [2020-12-22 15:13:20,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:13:20,842 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1216 transitions. [2020-12-22 15:13:20,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-22 15:13:20,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:20,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:20,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 15:13:20,846 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 15:13:20,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:20,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1790413165, now seen corresponding path program 1 times [2020-12-22 15:13:20,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:20,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515864593] [2020-12-22 15:13:20,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:21,059 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 15:13:21,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515864593] [2020-12-22 15:13:21,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:13:21,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:13:21,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494372720] [2020-12-22 15:13:21,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:13:21,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:21,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:13:21,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:13:21,066 INFO L87 Difference]: Start difference. First operand 901 states and 1216 transitions. Second operand 4 states. [2020-12-22 15:13:21,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:21,197 INFO L93 Difference]: Finished difference Result 1931 states and 2622 transitions. [2020-12-22 15:13:21,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 15:13:21,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-12-22 15:13:21,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:21,203 INFO L225 Difference]: With dead ends: 1931 [2020-12-22 15:13:21,203 INFO L226 Difference]: Without dead ends: 1048 [2020-12-22 15:13:21,205 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 15:13:21,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-12-22 15:13:21,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 901. [2020-12-22 15:13:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-12-22 15:13:21,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1216 transitions. [2020-12-22 15:13:21,234 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1216 transitions. Word has length 135 [2020-12-22 15:13:21,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:21,235 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1216 transitions. [2020-12-22 15:13:21,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:13:21,235 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1216 transitions. [2020-12-22 15:13:21,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 15:13:21,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:21,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:21,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 15:13:21,239 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 15:13:21,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:21,240 INFO L82 PathProgramCache]: Analyzing trace with hash 852192385, now seen corresponding path program 1 times [2020-12-22 15:13:21,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:21,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220822807] [2020-12-22 15:13:21,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:21,599 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 15:13:21,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220822807] [2020-12-22 15:13:21,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166558662] [2020-12-22 15:13:21,600 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 15:13:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:22,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 15:13:22,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:22,445 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 15:13:22,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:13:22,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 15:13:22,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854515722] [2020-12-22 15:13:22,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 15:13:22,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:22,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 15:13:22,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 15:13:22,447 INFO L87 Difference]: Start difference. First operand 901 states and 1216 transitions. Second operand 6 states. [2020-12-22 15:13:23,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:23,214 INFO L93 Difference]: Finished difference Result 3851 states and 5268 transitions. [2020-12-22 15:13:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:13:23,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-12-22 15:13:23,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:23,232 INFO L225 Difference]: With dead ends: 3851 [2020-12-22 15:13:23,232 INFO L226 Difference]: Without dead ends: 2968 [2020-12-22 15:13:23,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 136 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 15:13:23,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-12-22 15:13:23,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 985. [2020-12-22 15:13:23,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-12-22 15:13:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1324 transitions. [2020-12-22 15:13:23,285 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1324 transitions. Word has length 136 [2020-12-22 15:13:23,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:23,285 INFO L481 AbstractCegarLoop]: Abstraction has 985 states and 1324 transitions. [2020-12-22 15:13:23,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 15:13:23,286 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1324 transitions. [2020-12-22 15:13:23,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 15:13:23,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:23,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:23,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 15:13:23,505 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 15:13:23,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:23,507 INFO L82 PathProgramCache]: Analyzing trace with hash -710651366, now seen corresponding path program 2 times [2020-12-22 15:13:23,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:23,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226552716] [2020-12-22 15:13:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:23,797 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 15:13:23,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226552716] [2020-12-22 15:13:23,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624886251] [2020-12-22 15:13:23,798 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 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 15:13:24,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 15:13:24,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 15:13:24,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 15:13:24,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:24,602 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 15:13:24,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:13:24,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2020-12-22 15:13:24,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787934393] [2020-12-22 15:13:24,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 15:13:24,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:24,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 15:13:24,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-22 15:13:24,604 INFO L87 Difference]: Start difference. First operand 985 states and 1324 transitions. Second operand 7 states. [2020-12-22 15:13:24,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:24,971 INFO L93 Difference]: Finished difference Result 2198 states and 2979 transitions. [2020-12-22 15:13:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 15:13:24,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-12-22 15:13:24,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:24,977 INFO L225 Difference]: With dead ends: 2198 [2020-12-22 15:13:24,977 INFO L226 Difference]: Without dead ends: 1231 [2020-12-22 15:13:24,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-12-22 15:13:24,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2020-12-22 15:13:25,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 991. [2020-12-22 15:13:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-12-22 15:13:25,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1330 transitions. [2020-12-22 15:13:25,012 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1330 transitions. Word has length 140 [2020-12-22 15:13:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:25,012 INFO L481 AbstractCegarLoop]: Abstraction has 991 states and 1330 transitions. [2020-12-22 15:13:25,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 15:13:25,012 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1330 transitions. [2020-12-22 15:13:25,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 15:13:25,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:25,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:25,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:13:25,231 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 15:13:25,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:25,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1270701829, now seen corresponding path program 1 times [2020-12-22 15:13:25,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:25,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154943325] [2020-12-22 15:13:25,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:25,477 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 15:13:25,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154943325] [2020-12-22 15:13:25,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018437095] [2020-12-22 15:13:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:13:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:26,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 1993 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 15:13:26,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:26,321 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 15:13:26,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:13:26,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 15:13:26,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637150227] [2020-12-22 15:13:26,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 15:13:26,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:26,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 15:13:26,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 15:13:26,324 INFO L87 Difference]: Start difference. First operand 991 states and 1330 transitions. Second operand 7 states. [2020-12-22 15:13:27,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:27,221 INFO L93 Difference]: Finished difference Result 4692 states and 6401 transitions. [2020-12-22 15:13:27,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 15:13:27,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-12-22 15:13:27,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:27,239 INFO L225 Difference]: With dead ends: 4692 [2020-12-22 15:13:27,240 INFO L226 Difference]: Without dead ends: 3719 [2020-12-22 15:13:27,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 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 15:13:27,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2020-12-22 15:13:27,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 1075. [2020-12-22 15:13:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1075 states. [2020-12-22 15:13:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1438 transitions. [2020-12-22 15:13:27,298 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1438 transitions. Word has length 141 [2020-12-22 15:13:27,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:27,299 INFO L481 AbstractCegarLoop]: Abstraction has 1075 states and 1438 transitions. [2020-12-22 15:13:27,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 15:13:27,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1438 transitions. [2020-12-22 15:13:27,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 15:13:27,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:27,302 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:27,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 15:13:27,517 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 15:13:27,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:27,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1491551852, now seen corresponding path program 2 times [2020-12-22 15:13:27,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:27,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277551204] [2020-12-22 15:13:27,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 15:13:27,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277551204] [2020-12-22 15:13:27,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358840744] [2020-12-22 15:13:27,815 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 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 15:13:29,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 15:13:29,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 15:13:29,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 15:13:29,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-22 15:13:29,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:13:29,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2020-12-22 15:13:29,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832061997] [2020-12-22 15:13:29,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:13:29,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:29,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:13:29,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:13:29,179 INFO L87 Difference]: Start difference. First operand 1075 states and 1438 transitions. Second operand 3 states. [2020-12-22 15:13:29,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:29,225 INFO L93 Difference]: Finished difference Result 2136 states and 2859 transitions. [2020-12-22 15:13:29,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:13:29,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2020-12-22 15:13:29,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:29,231 INFO L225 Difference]: With dead ends: 2136 [2020-12-22 15:13:29,231 INFO L226 Difference]: Without dead ends: 1079 [2020-12-22 15:13:29,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 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 15:13:29,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2020-12-22 15:13:29,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1079. [2020-12-22 15:13:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-12-22 15:13:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1442 transitions. [2020-12-22 15:13:29,279 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1442 transitions. Word has length 145 [2020-12-22 15:13:29,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:29,280 INFO L481 AbstractCegarLoop]: Abstraction has 1079 states and 1442 transitions. [2020-12-22 15:13:29,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:13:29,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1442 transitions. [2020-12-22 15:13:29,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 15:13:29,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:29,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:29,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:13:29,497 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 15:13:29,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:29,498 INFO L82 PathProgramCache]: Analyzing trace with hash 315784985, now seen corresponding path program 1 times [2020-12-22 15:13:29,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:29,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163027400] [2020-12-22 15:13:29,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:29,755 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 15:13:29,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163027400] [2020-12-22 15:13:29,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917246396] [2020-12-22 15:13:29,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:13:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:30,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 2010 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 15:13:30,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:30,637 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 15:13:30,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:13:30,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 15:13:30,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864064423] [2020-12-22 15:13:30,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 15:13:30,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:30,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 15:13:30,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:13:30,640 INFO L87 Difference]: Start difference. First operand 1079 states and 1442 transitions. Second operand 8 states. [2020-12-22 15:13:31,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:31,693 INFO L93 Difference]: Finished difference Result 5447 states and 7424 transitions. [2020-12-22 15:13:31,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 15:13:31,694 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-12-22 15:13:31,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:31,716 INFO L225 Difference]: With dead ends: 5447 [2020-12-22 15:13:31,716 INFO L226 Difference]: Without dead ends: 4386 [2020-12-22 15:13:31,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 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 15:13:31,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2020-12-22 15:13:31,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 1163. [2020-12-22 15:13:31,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1163 states. [2020-12-22 15:13:31,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1550 transitions. [2020-12-22 15:13:31,778 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1550 transitions. Word has length 147 [2020-12-22 15:13:31,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:31,779 INFO L481 AbstractCegarLoop]: Abstraction has 1163 states and 1550 transitions. [2020-12-22 15:13:31,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 15:13:31,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1550 transitions. [2020-12-22 15:13:31,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 15:13:31,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:31,783 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:31,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 15:13:31,997 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 15:13:31,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:31,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1613781170, now seen corresponding path program 2 times [2020-12-22 15:13:31,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:31,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689205672] [2020-12-22 15:13:31,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:32,245 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 15:13:32,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689205672] [2020-12-22 15:13:32,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569331569] [2020-12-22 15:13:32,245 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 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 15:13:33,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 15:13:33,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 15:13:33,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 15:13:33,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:33,698 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 15:13:33,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:13:33,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2020-12-22 15:13:33,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12830752] [2020-12-22 15:13:33,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:13:33,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:33,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:13:33,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 15:13:33,700 INFO L87 Difference]: Start difference. First operand 1163 states and 1550 transitions. Second operand 5 states. [2020-12-22 15:13:34,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:34,118 INFO L93 Difference]: Finished difference Result 3575 states and 4788 transitions. [2020-12-22 15:13:34,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 15:13:34,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-12-22 15:13:34,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:34,130 INFO L225 Difference]: With dead ends: 3575 [2020-12-22 15:13:34,131 INFO L226 Difference]: Without dead ends: 2430 [2020-12-22 15:13:34,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 151 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 15:13:34,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2020-12-22 15:13:34,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1169. [2020-12-22 15:13:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1169 states. [2020-12-22 15:13:34,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1556 transitions. [2020-12-22 15:13:34,189 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1556 transitions. Word has length 151 [2020-12-22 15:13:34,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:34,189 INFO L481 AbstractCegarLoop]: Abstraction has 1169 states and 1556 transitions. [2020-12-22 15:13:34,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:13:34,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1556 transitions. [2020-12-22 15:13:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 15:13:34,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:34,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:34,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 15:13:34,409 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 15:13:34,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:34,410 INFO L82 PathProgramCache]: Analyzing trace with hash -720066253, now seen corresponding path program 1 times [2020-12-22 15:13:34,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:34,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334986930] [2020-12-22 15:13:34,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:34,636 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 15:13:34,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334986930] [2020-12-22 15:13:34,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10340540] [2020-12-22 15:13:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:13:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:37,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 2041 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 15:13:37,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:37,608 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 15:13:37,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:13:37,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 15:13:37,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322237864] [2020-12-22 15:13:37,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:13:37,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:37,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:13:37,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:13:37,610 INFO L87 Difference]: Start difference. First operand 1169 states and 1556 transitions. Second operand 5 states. [2020-12-22 15:13:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:37,681 INFO L93 Difference]: Finished difference Result 2324 states and 3095 transitions. [2020-12-22 15:13:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 15:13:37,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-12-22 15:13:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:37,687 INFO L225 Difference]: With dead ends: 2324 [2020-12-22 15:13:37,687 INFO L226 Difference]: Without dead ends: 1173 [2020-12-22 15:13:37,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 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 15:13:37,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2020-12-22 15:13:37,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2020-12-22 15:13:37,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2020-12-22 15:13:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1560 transitions. [2020-12-22 15:13:37,734 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1560 transitions. Word has length 152 [2020-12-22 15:13:37,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:37,734 INFO L481 AbstractCegarLoop]: Abstraction has 1173 states and 1560 transitions. [2020-12-22 15:13:37,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:13:37,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1560 transitions. [2020-12-22 15:13:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 15:13:37,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:37,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:37,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 15:13:37,952 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 15:13:37,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:37,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1228958706, now seen corresponding path program 2 times [2020-12-22 15:13:37,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:37,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194044535] [2020-12-22 15:13:37,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:38,193 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 15:13:38,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194044535] [2020-12-22 15:13:38,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888615107] [2020-12-22 15:13:38,194 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 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 15:13:39,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 15:13:39,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 15:13:39,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 15:13:39,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-12-22 15:13:39,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:13:39,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-12-22 15:13:39,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536536597] [2020-12-22 15:13:39,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:13:39,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:39,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:13:39,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:13:39,755 INFO L87 Difference]: Start difference. First operand 1173 states and 1560 transitions. Second operand 5 states. [2020-12-22 15:13:40,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:40,277 INFO L93 Difference]: Finished difference Result 3457 states and 4632 transitions. [2020-12-22 15:13:40,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 15:13:40,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-12-22 15:13:40,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:40,284 INFO L225 Difference]: With dead ends: 3457 [2020-12-22 15:13:40,284 INFO L226 Difference]: Without dead ends: 2302 [2020-12-22 15:13:40,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 15:13:40,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2020-12-22 15:13:40,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1179. [2020-12-22 15:13:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2020-12-22 15:13:40,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1566 transitions. [2020-12-22 15:13:40,337 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1566 transitions. Word has length 154 [2020-12-22 15:13:40,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:40,337 INFO L481 AbstractCegarLoop]: Abstraction has 1179 states and 1566 transitions. [2020-12-22 15:13:40,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:13:40,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1566 transitions. [2020-12-22 15:13:40,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 15:13:40,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:40,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:40,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 15:13:40,556 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 15:13:40,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:40,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1813384852, now seen corresponding path program 1 times [2020-12-22 15:13:40,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:40,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812405849] [2020-12-22 15:13:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:40,823 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 15:13:40,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812405849] [2020-12-22 15:13:40,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754873225] [2020-12-22 15:13:40,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:13:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:44,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 2069 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 15:13:44,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:44,576 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 15:13:44,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:13:44,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 15:13:44,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979907732] [2020-12-22 15:13:44,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 15:13:44,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:44,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 15:13:44,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 15:13:44,579 INFO L87 Difference]: Start difference. First operand 1179 states and 1566 transitions. Second operand 6 states. [2020-12-22 15:13:44,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:44,676 INFO L93 Difference]: Finished difference Result 2344 states and 3115 transitions. [2020-12-22 15:13:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:13:44,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2020-12-22 15:13:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:44,680 INFO L225 Difference]: With dead ends: 2344 [2020-12-22 15:13:44,680 INFO L226 Difference]: Without dead ends: 1183 [2020-12-22 15:13:44,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 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 15:13:44,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2020-12-22 15:13:44,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2020-12-22 15:13:44,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2020-12-22 15:13:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1570 transitions. [2020-12-22 15:13:44,734 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1570 transitions. Word has length 155 [2020-12-22 15:13:44,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:44,734 INFO L481 AbstractCegarLoop]: Abstraction has 1183 states and 1570 transitions. [2020-12-22 15:13:44,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 15:13:44,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1570 transitions. [2020-12-22 15:13:44,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 15:13:44,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:44,783 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:44,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:13:44,984 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 15:13:44,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:44,986 INFO L82 PathProgramCache]: Analyzing trace with hash -993897295, now seen corresponding path program 2 times [2020-12-22 15:13:44,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:44,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376023005] [2020-12-22 15:13:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:45,260 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 15:13:45,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376023005] [2020-12-22 15:13:45,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431123050] [2020-12-22 15:13:45,261 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 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 15:13:46,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 15:13:46,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 15:13:46,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 1690 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 15:13:46,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-12-22 15:13:47,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:13:47,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2020-12-22 15:13:47,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206705882] [2020-12-22 15:13:47,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:13:47,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:47,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:13:47,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 15:13:47,035 INFO L87 Difference]: Start difference. First operand 1183 states and 1570 transitions. Second operand 3 states. [2020-12-22 15:13:47,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:47,111 INFO L93 Difference]: Finished difference Result 2463 states and 3284 transitions. [2020-12-22 15:13:47,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:13:47,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-12-22 15:13:47,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:47,115 INFO L225 Difference]: With dead ends: 2463 [2020-12-22 15:13:47,115 INFO L226 Difference]: Without dead ends: 1298 [2020-12-22 15:13:47,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 15:13:47,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2020-12-22 15:13:47,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1185. [2020-12-22 15:13:47,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2020-12-22 15:13:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1572 transitions. [2020-12-22 15:13:47,165 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1572 transitions. Word has length 157 [2020-12-22 15:13:47,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:47,165 INFO L481 AbstractCegarLoop]: Abstraction has 1185 states and 1572 transitions. [2020-12-22 15:13:47,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:13:47,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1572 transitions. [2020-12-22 15:13:47,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 15:13:47,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:47,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:47,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:13:47,384 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 15:13:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:47,385 INFO L82 PathProgramCache]: Analyzing trace with hash 740207155, now seen corresponding path program 1 times [2020-12-22 15:13:47,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:47,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903507122] [2020-12-22 15:13:47,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:47,723 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 15:13:47,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903507122] [2020-12-22 15:13:47,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59768419] [2020-12-22 15:13:47,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:13:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:50,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 2075 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 15:13:50,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-12-22 15:13:50,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:13:50,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2020-12-22 15:13:50,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553315468] [2020-12-22 15:13:50,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:13:50,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:50,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:13:50,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 15:13:50,678 INFO L87 Difference]: Start difference. First operand 1185 states and 1572 transitions. Second operand 3 states. [2020-12-22 15:13:50,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:50,786 INFO L93 Difference]: Finished difference Result 2375 states and 3157 transitions. [2020-12-22 15:13:50,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:13:50,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-12-22 15:13:50,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:50,789 INFO L225 Difference]: With dead ends: 2375 [2020-12-22 15:13:50,789 INFO L226 Difference]: Without dead ends: 1194 [2020-12-22 15:13:50,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 15:13:50,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-12-22 15:13:50,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-12-22 15:13:50,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-12-22 15:13:50,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1581 transitions. [2020-12-22 15:13:50,837 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1581 transitions. Word has length 157 [2020-12-22 15:13:50,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:50,837 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 1581 transitions. [2020-12-22 15:13:50,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:13:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1581 transitions. [2020-12-22 15:13:50,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-12-22 15:13:50,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:50,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:51,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 15:13:51,055 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 15:13:51,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:51,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1262372963, now seen corresponding path program 1 times [2020-12-22 15:13:51,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:51,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424757443] [2020-12-22 15:13:51,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-22 15:13:51,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424757443] [2020-12-22 15:13:51,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386146340] [2020-12-22 15:13:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:13:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:52,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 2105 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 15:13:52,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-12-22 15:13:52,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:13:52,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2020-12-22 15:13:52,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36127404] [2020-12-22 15:13:52,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 15:13:52,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:52,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 15:13:52,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:13:52,215 INFO L87 Difference]: Start difference. First operand 1194 states and 1581 transitions. Second operand 8 states. [2020-12-22 15:13:52,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:52,416 INFO L93 Difference]: Finished difference Result 2389 states and 3166 transitions. [2020-12-22 15:13:52,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 15:13:52,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-12-22 15:13:52,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:52,419 INFO L225 Difference]: With dead ends: 2389 [2020-12-22 15:13:52,419 INFO L226 Difference]: Without dead ends: 1200 [2020-12-22 15:13:52,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:13:52,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2020-12-22 15:13:52,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1200. [2020-12-22 15:13:52,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2020-12-22 15:13:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1587 transitions. [2020-12-22 15:13:52,465 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1587 transitions. Word has length 162 [2020-12-22 15:13:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:52,465 INFO L481 AbstractCegarLoop]: Abstraction has 1200 states and 1587 transitions. [2020-12-22 15:13:52,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 15:13:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1587 transitions. [2020-12-22 15:13:52,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-12-22 15:13:52,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:52,469 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:13:52,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:13:52,682 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 15:13:52,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:52,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1504994470, now seen corresponding path program 2 times [2020-12-22 15:13:52,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:52,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42485916] [2020-12-22 15:13:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 15:13:52,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42485916] [2020-12-22 15:13:52,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254329579] [2020-12-22 15:13:52,965 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 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 [2020-12-22 15:13:54,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 15:13:54,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 15:13:54,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 15:13:54,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-22 15:13:54,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:13:54,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2020-12-22 15:13:54,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623994496] [2020-12-22 15:13:54,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:13:54,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:54,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:13:54,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-22 15:13:54,275 INFO L87 Difference]: Start difference. First operand 1200 states and 1587 transitions. Second operand 4 states. [2020-12-22 15:13:54,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:54,446 INFO L93 Difference]: Finished difference Result 2731 states and 3642 transitions. [2020-12-22 15:13:54,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 15:13:54,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-12-22 15:13:54,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:54,450 INFO L225 Difference]: With dead ends: 2731 [2020-12-22 15:13:54,450 INFO L226 Difference]: Without dead ends: 1556 [2020-12-22 15:13:54,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-12-22 15:13:54,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2020-12-22 15:13:54,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1204. [2020-12-22 15:13:54,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2020-12-22 15:13:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1591 transitions. [2020-12-22 15:13:54,498 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1591 transitions. Word has length 166 [2020-12-22 15:13:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:54,499 INFO L481 AbstractCegarLoop]: Abstraction has 1204 states and 1591 transitions. [2020-12-22 15:13:54,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:13:54,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1591 transitions. [2020-12-22 15:13:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-12-22 15:13:54,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:54,502 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 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, 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 15:13:54,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 15:13:54,716 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 15:13:54,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:54,717 INFO L82 PathProgramCache]: Analyzing trace with hash -615129885, now seen corresponding path program 1 times [2020-12-22 15:13:54,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:54,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739690889] [2020-12-22 15:13:54,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 15:13:55,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739690889] [2020-12-22 15:13:55,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634371941] [2020-12-22 15:13:55,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:13:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:57,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 2138 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 15:13:57,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 15:13:57,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:13:57,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 15:13:57,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239383289] [2020-12-22 15:13:57,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 15:13:57,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:57,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 15:13:57,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:13:57,731 INFO L87 Difference]: Start difference. First operand 1204 states and 1591 transitions. Second operand 8 states. [2020-12-22 15:13:57,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:57,855 INFO L93 Difference]: Finished difference Result 2387 states and 3158 transitions. [2020-12-22 15:13:57,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 15:13:57,856 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 169 [2020-12-22 15:13:57,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:57,857 INFO L225 Difference]: With dead ends: 2387 [2020-12-22 15:13:57,858 INFO L226 Difference]: Without dead ends: 1208 [2020-12-22 15:13:57,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:13:57,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2020-12-22 15:13:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1208. [2020-12-22 15:13:57,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2020-12-22 15:13:57,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1595 transitions. [2020-12-22 15:13:57,904 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1595 transitions. Word has length 169 [2020-12-22 15:13:57,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:57,905 INFO L481 AbstractCegarLoop]: Abstraction has 1208 states and 1595 transitions. [2020-12-22 15:13:57,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 15:13:57,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1595 transitions. [2020-12-22 15:13:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 15:13:57,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:57,908 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 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, 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 15:13:58,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:13:58,124 INFO L429 AbstractCegarLoop]: === Iteration 25 === [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 15:13:58,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:58,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1495448962, now seen corresponding path program 2 times [2020-12-22 15:13:58,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:58,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216852265] [2020-12-22 15:13:58,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 15:13:58,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216852265] [2020-12-22 15:13:58,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834933914] [2020-12-22 15:13:58,402 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:13:59,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 15:13:59,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 15:13:59,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1703 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 15:13:59,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-12-22 15:13:59,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:13:59,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2020-12-22 15:13:59,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957395467] [2020-12-22 15:13:59,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:13:59,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:59,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:13:59,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-22 15:13:59,835 INFO L87 Difference]: Start difference. First operand 1208 states and 1595 transitions. Second operand 5 states. [2020-12-22 15:14:00,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:14:00,275 INFO L93 Difference]: Finished difference Result 3146 states and 4177 transitions. [2020-12-22 15:14:00,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 15:14:00,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-12-22 15:14:00,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:14:00,280 INFO L225 Difference]: With dead ends: 3146 [2020-12-22 15:14:00,280 INFO L226 Difference]: Without dead ends: 1963 [2020-12-22 15:14:00,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-12-22 15:14:00,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2020-12-22 15:14:00,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1214. [2020-12-22 15:14:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1214 states. [2020-12-22 15:14:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1601 transitions. [2020-12-22 15:14:00,346 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1601 transitions. Word has length 171 [2020-12-22 15:14:00,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:14:00,346 INFO L481 AbstractCegarLoop]: Abstraction has 1214 states and 1601 transitions. [2020-12-22 15:14:00,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:14:00,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1601 transitions. [2020-12-22 15:14:00,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-12-22 15:14:00,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:14:00,349 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 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, 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 15:14:00,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 15:14:00,563 INFO L429 AbstractCegarLoop]: === Iteration 26 === [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 15:14:00,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:14:00,564 INFO L82 PathProgramCache]: Analyzing trace with hash -601544216, now seen corresponding path program 1 times [2020-12-22 15:14:00,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:14:00,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872098009] [2020-12-22 15:14:00,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:14:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:14:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 15:14:00,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872098009] [2020-12-22 15:14:00,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130426860] [2020-12-22 15:14:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:14:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:14:03,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 15:14:03,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:14:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 15:14:03,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:14:03,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-22 15:14:03,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925379068] [2020-12-22 15:14:03,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 15:14:03,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:14:03,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 15:14:03,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 15:14:03,729 INFO L87 Difference]: Start difference. First operand 1214 states and 1601 transitions. Second operand 9 states. [2020-12-22 15:14:03,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:14:03,885 INFO L93 Difference]: Finished difference Result 2407 states and 3178 transitions. [2020-12-22 15:14:03,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 15:14:03,886 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-12-22 15:14:03,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:14:03,888 INFO L225 Difference]: With dead ends: 2407 [2020-12-22 15:14:03,889 INFO L226 Difference]: Without dead ends: 1218 [2020-12-22 15:14:03,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 169 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 15:14:03,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2020-12-22 15:14:03,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1218. [2020-12-22 15:14:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2020-12-22 15:14:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1605 transitions. [2020-12-22 15:14:03,933 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1605 transitions. Word has length 172 [2020-12-22 15:14:03,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:14:03,934 INFO L481 AbstractCegarLoop]: Abstraction has 1218 states and 1605 transitions. [2020-12-22 15:14:03,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 15:14:03,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1605 transitions. [2020-12-22 15:14:03,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-12-22 15:14:03,937 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:14:03,937 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 5, 4, 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, 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 15:14:04,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 15:14:04,151 INFO L429 AbstractCegarLoop]: === Iteration 27 === [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 15:14:04,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:14:04,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1116857747, now seen corresponding path program 2 times [2020-12-22 15:14:04,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:14:04,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304975327] [2020-12-22 15:14:04,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:14:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:14:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 15:14:04,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304975327] [2020-12-22 15:14:04,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985895290] [2020-12-22 15:14:04,463 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:14:22,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 15:14:22,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 15:14:22,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-22 15:14:22,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:14:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 15:14:22,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:14:22,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-12-22 15:14:22,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849495475] [2020-12-22 15:14:22,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 15:14:22,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:14:22,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 15:14:22,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 15:14:22,940 INFO L87 Difference]: Start difference. First operand 1218 states and 1605 transitions. Second operand 10 states. [2020-12-22 15:14:23,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:14:23,178 INFO L93 Difference]: Finished difference Result 2415 states and 3186 transitions. [2020-12-22 15:14:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 15:14:23,178 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 174 [2020-12-22 15:14:23,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:14:23,181 INFO L225 Difference]: With dead ends: 2415 [2020-12-22 15:14:23,181 INFO L226 Difference]: Without dead ends: 1222 [2020-12-22 15:14:23,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 171 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 15:14:23,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-12-22 15:14:23,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1222. [2020-12-22 15:14:23,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1222 states. [2020-12-22 15:14:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1609 transitions. [2020-12-22 15:14:23,239 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1609 transitions. Word has length 174 [2020-12-22 15:14:23,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:14:23,239 INFO L481 AbstractCegarLoop]: Abstraction has 1222 states and 1609 transitions. [2020-12-22 15:14:23,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 15:14:23,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1609 transitions. [2020-12-22 15:14:23,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-12-22 15:14:23,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:14:23,244 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 5, 4, 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, 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 15:14:23,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 15:14:23,446 INFO L429 AbstractCegarLoop]: === Iteration 28 === [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 15:14:23,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:14:23,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1883045298, now seen corresponding path program 3 times [2020-12-22 15:14:23,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:14:23,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106589227] [2020-12-22 15:14:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:14:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:14:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 15:14:23,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106589227] [2020-12-22 15:14:23,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829469185] [2020-12-22 15:14:23,901 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:16:40,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 15:16:40,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 15:16:40,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 15:16:40,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:16:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-12-22 15:16:41,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:16:41,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4] total 12 [2020-12-22 15:16:41,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285113010] [2020-12-22 15:16:41,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 15:16:41,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:16:41,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 15:16:41,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-12-22 15:16:41,022 INFO L87 Difference]: Start difference. First operand 1222 states and 1609 transitions. Second operand 12 states. [2020-12-22 15:16:41,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:16:41,332 INFO L93 Difference]: Finished difference Result 2441 states and 3218 transitions. [2020-12-22 15:16:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 15:16:41,332 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 176 [2020-12-22 15:16:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:16:41,335 INFO L225 Difference]: With dead ends: 2441 [2020-12-22 15:16:41,335 INFO L226 Difference]: Without dead ends: 1229 [2020-12-22 15:16:41,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-12-22 15:16:41,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-12-22 15:16:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2020-12-22 15:16:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2020-12-22 15:16:41,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1616 transitions. [2020-12-22 15:16:41,380 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1616 transitions. Word has length 176 [2020-12-22 15:16:41,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:16:41,380 INFO L481 AbstractCegarLoop]: Abstraction has 1229 states and 1616 transitions. [2020-12-22 15:16:41,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 15:16:41,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1616 transitions. [2020-12-22 15:16:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-12-22 15:16:41,383 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:16:41,383 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:16:41,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 15:16:41,584 INFO L429 AbstractCegarLoop]: === Iteration 29 === [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 15:16:41,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:16:41,585 INFO L82 PathProgramCache]: Analyzing trace with hash 720849621, now seen corresponding path program 4 times [2020-12-22 15:16:41,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:16:41,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055885341] [2020-12-22 15:16:41,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:16:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:16:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-12-22 15:16:41,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055885341] [2020-12-22 15:16:41,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592480691] [2020-12-22 15:16:41,959 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:16:44,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 15:16:44,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 15:16:44,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 2205 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 15:16:44,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:16:44,696 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-12-22 15:16:44,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:16:44,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-22 15:16:44,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023730247] [2020-12-22 15:16:44,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 15:16:44,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:16:44,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 15:16:44,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-22 15:16:44,698 INFO L87 Difference]: Start difference. First operand 1229 states and 1616 transitions. Second operand 12 states. [2020-12-22 15:16:44,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:16:44,933 INFO L93 Difference]: Finished difference Result 2434 states and 3205 transitions. [2020-12-22 15:16:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 15:16:44,933 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 181 [2020-12-22 15:16:44,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:16:44,936 INFO L225 Difference]: With dead ends: 2434 [2020-12-22 15:16:44,936 INFO L226 Difference]: Without dead ends: 1233 [2020-12-22 15:16:44,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 176 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-22 15:16:44,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-12-22 15:16:44,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1233. [2020-12-22 15:16:44,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1233 states. [2020-12-22 15:16:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1620 transitions. [2020-12-22 15:16:44,981 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1620 transitions. Word has length 181 [2020-12-22 15:16:44,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:16:44,981 INFO L481 AbstractCegarLoop]: Abstraction has 1233 states and 1620 transitions. [2020-12-22 15:16:44,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 15:16:44,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1620 transitions. [2020-12-22 15:16:44,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-12-22 15:16:44,984 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:16:44,984 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:16:45,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 15:16:45,199 INFO L429 AbstractCegarLoop]: === Iteration 30 === [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 15:16:45,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:16:45,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1606700006, now seen corresponding path program 5 times [2020-12-22 15:16:45,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:16:45,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324381225] [2020-12-22 15:16:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:16:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:16:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-12-22 15:16:45,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324381225] [2020-12-22 15:16:45,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158510550] [2020-12-22 15:16:45,595 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true