/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--net--hippi--rrunner.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 15:03:10,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 15:03:10,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 15:03:10,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 15:03:10,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 15:03:10,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 15:03:10,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 15:03:10,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 15:03:10,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 15:03:10,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 15:03:10,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 15:03:10,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 15:03:10,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 15:03:10,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 15:03:10,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 15:03:10,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 15:03:10,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 15:03:10,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 15:03:10,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 15:03:10,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 15:03:10,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 15:03:10,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 15:03:10,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 15:03:10,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 15:03:10,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 15:03:10,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 15:03:10,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 15:03:10,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 15:03:10,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 15:03:10,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 15:03:10,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 15:03:10,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 15:03:10,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 15:03:10,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 15:03:10,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 15:03:10,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 15:03:10,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 15:03:10,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 15:03:10,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 15:03:10,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 15:03:10,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 15:03:10,769 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 15:03:10,823 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 15:03:10,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 15:03:10,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 15:03:10,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 15:03:10,829 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 15:03:10,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 15:03:10,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 15:03:10,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 15:03:10,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 15:03:10,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 15:03:10,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 15:03:10,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 15:03:10,832 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 15:03:10,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 15:03:10,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 15:03:10,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 15:03:10,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 15:03:10,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:03:10,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 15:03:10,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 15:03:10,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 15:03:10,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 15:03:10,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 15:03:10,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 15:03:10,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 15:03:10,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 15:03:11,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 15:03:11,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 15:03:11,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 15:03:11,305 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 15:03:11,306 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 15:03:11,307 INFO L432 ainManager$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--net--hippi--rrunner.ko-entry_point.cil.out.i [2020-12-22 15:03:11,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1841f48de/628ecc9d3ea949c48920df51999d290e/FLAGa1d559012 [2020-12-22 15:03:12,449 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 15:03:12,450 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--net--hippi--rrunner.ko-entry_point.cil.out.i [2020-12-22 15:03:12,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1841f48de/628ecc9d3ea949c48920df51999d290e/FLAGa1d559012 [2020-12-22 15:03:12,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1841f48de/628ecc9d3ea949c48920df51999d290e [2020-12-22 15:03:12,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 15:03:12,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 15:03:12,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 15:03:12,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 15:03:12,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 15:03:12,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:03:12" (1/1) ... [2020-12-22 15:03:12,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d11c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:03:12, skipping insertion in model container [2020-12-22 15:03:12,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:03:12" (1/1) ... [2020-12-22 15:03:12,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 15:03:13,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 15:03:15,169 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--net--hippi--rrunner.ko-entry_point.cil.out.i[275280,275293] [2020-12-22 15:03:15,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:03:15,307 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 15:03:15,747 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--net--hippi--rrunner.ko-entry_point.cil.out.i[275280,275293] [2020-12-22 15:03:15,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:03:16,166 INFO L208 MainTranslator]: Completed translation [2020-12-22 15:03:16,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:03:16 WrapperNode [2020-12-22 15:03:16,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 15:03:16,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 15:03:16,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 15:03:16,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 15:03:16,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:03:16" (1/1) ... [2020-12-22 15:03:16,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:03:16" (1/1) ... [2020-12-22 15:03:16,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 15:03:16,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 15:03:16,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 15:03:16,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 15:03:16,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:03:16" (1/1) ... [2020-12-22 15:03:16,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:03:16" (1/1) ... [2020-12-22 15:03:17,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:03:16" (1/1) ... [2020-12-22 15:03:17,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:03:16" (1/1) ... [2020-12-22 15:03:17,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:03:16" (1/1) ... [2020-12-22 15:03:17,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:03:16" (1/1) ... [2020-12-22 15:03:17,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:03:16" (1/1) ... [2020-12-22 15:03:17,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 15:03:17,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 15:03:17,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 15:03:17,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 15:03:17,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:03:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:03:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 15:03:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 15:03:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 15:03:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 15:03:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 15:03:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 15:03:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 15:03:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 15:03:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 15:03:17,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 15:03:17,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 15:03:17,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 15:03:17,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 15:03:17,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 15:03:17,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 15:03:17,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 15:03:32,394 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 15:03:32,394 INFO L299 CfgBuilder]: Removed 3230 assume(true) statements. [2020-12-22 15:03:32,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:03:32 BoogieIcfgContainer [2020-12-22 15:03:32,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 15:03:32,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 15:03:32,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 15:03:32,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 15:03:32,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:03:12" (1/3) ... [2020-12-22 15:03:32,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fec930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:03:32, skipping insertion in model container [2020-12-22 15:03:32,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:03:16" (2/3) ... [2020-12-22 15:03:32,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fec930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:03:32, skipping insertion in model container [2020-12-22 15:03:32,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:03:32" (3/3) ... [2020-12-22 15:03:32,408 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2020-12-22 15:03:32,415 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 15:03:32,422 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-12-22 15:03:32,442 INFO L253 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-12-22 15:03:32,479 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 15:03:32,480 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 15:03:32,480 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 15:03:32,480 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 15:03:32,480 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 15:03:32,480 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 15:03:32,480 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 15:03:32,481 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 15:03:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states. [2020-12-22 15:03:32,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 15:03:32,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:03:32,551 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] [2020-12-22 15:03:32,552 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:03:32,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:03:32,559 INFO L82 PathProgramCache]: Analyzing trace with hash -241596489, now seen corresponding path program 1 times [2020-12-22 15:03:32,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:03:32,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920748706] [2020-12-22 15:03:32,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:03:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:03:33,194 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 15:03:33,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920748706] [2020-12-22 15:03:33,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:03:33,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:03:33,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25930711] [2020-12-22 15:03:33,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 15:03:33,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:03:33,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 15:03:33,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 15:03:33,235 INFO L87 Difference]: Start difference. First operand 2512 states. Second operand 2 states. [2020-12-22 15:03:33,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:03:33,432 INFO L93 Difference]: Finished difference Result 5020 states and 6545 transitions. [2020-12-22 15:03:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 15:03:33,434 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2020-12-22 15:03:33,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:03:33,473 INFO L225 Difference]: With dead ends: 5020 [2020-12-22 15:03:33,474 INFO L226 Difference]: Without dead ends: 2468 [2020-12-22 15:03:33,488 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 15:03:33,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2020-12-22 15:03:33,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 2468. [2020-12-22 15:03:33,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2468 states. [2020-12-22 15:03:33,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3138 transitions. [2020-12-22 15:03:33,659 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3138 transitions. Word has length 38 [2020-12-22 15:03:33,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:03:33,659 INFO L481 AbstractCegarLoop]: Abstraction has 2468 states and 3138 transitions. [2020-12-22 15:03:33,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 15:03:33,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3138 transitions. [2020-12-22 15:03:33,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 15:03:33,669 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:03:33,669 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] [2020-12-22 15:03:33,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 15:03:33,670 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:03:33,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:03:33,672 INFO L82 PathProgramCache]: Analyzing trace with hash -266212417, now seen corresponding path program 1 times [2020-12-22 15:03:33,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:03:33,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111445273] [2020-12-22 15:03:33,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:03:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:03:33,959 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 15:03:33,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111445273] [2020-12-22 15:03:33,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:03:33,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:03:33,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120799713] [2020-12-22 15:03:33,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:03:33,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:03:33,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:03:33,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:03:33,966 INFO L87 Difference]: Start difference. First operand 2468 states and 3138 transitions. Second operand 3 states. [2020-12-22 15:03:34,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:03:34,320 INFO L93 Difference]: Finished difference Result 6310 states and 8071 transitions. [2020-12-22 15:03:34,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:03:34,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-22 15:03:34,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:03:34,341 INFO L225 Difference]: With dead ends: 6310 [2020-12-22 15:03:34,341 INFO L226 Difference]: Without dead ends: 3867 [2020-12-22 15:03:34,348 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 15:03:34,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2020-12-22 15:03:34,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 3703. [2020-12-22 15:03:34,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3703 states. [2020-12-22 15:03:34,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3703 states to 3703 states and 4772 transitions. [2020-12-22 15:03:34,488 INFO L78 Accepts]: Start accepts. Automaton has 3703 states and 4772 transitions. Word has length 38 [2020-12-22 15:03:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:03:34,490 INFO L481 AbstractCegarLoop]: Abstraction has 3703 states and 4772 transitions. [2020-12-22 15:03:34,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:03:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3703 states and 4772 transitions. [2020-12-22 15:03:34,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 15:03:34,495 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:03:34,495 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] [2020-12-22 15:03:34,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 15:03:34,496 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:03:34,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:03:34,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1589790222, now seen corresponding path program 1 times [2020-12-22 15:03:34,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:03:34,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550163362] [2020-12-22 15:03:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:03:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:03:34,815 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 15:03:34,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550163362] [2020-12-22 15:03:34,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:03:34,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:03:34,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160075187] [2020-12-22 15:03:34,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:03:34,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:03:34,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:03:34,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:03:34,818 INFO L87 Difference]: Start difference. First operand 3703 states and 4772 transitions. Second operand 4 states. [2020-12-22 15:03:35,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:03:35,666 INFO L93 Difference]: Finished difference Result 14969 states and 18952 transitions. [2020-12-22 15:03:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:03:35,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 15:03:35,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:03:35,741 INFO L225 Difference]: With dead ends: 14969 [2020-12-22 15:03:35,742 INFO L226 Difference]: Without dead ends: 11291 [2020-12-22 15:03:35,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:03:35,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11291 states. [2020-12-22 15:03:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11291 to 5812. [2020-12-22 15:03:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5812 states. [2020-12-22 15:03:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5812 states to 5812 states and 7355 transitions. [2020-12-22 15:03:36,056 INFO L78 Accepts]: Start accepts. Automaton has 5812 states and 7355 transitions. Word has length 49 [2020-12-22 15:03:36,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:03:36,057 INFO L481 AbstractCegarLoop]: Abstraction has 5812 states and 7355 transitions. [2020-12-22 15:03:36,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:03:36,058 INFO L276 IsEmpty]: Start isEmpty. Operand 5812 states and 7355 transitions. [2020-12-22 15:03:36,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 15:03:36,059 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:03:36,059 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] [2020-12-22 15:03:36,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 15:03:36,060 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:03:36,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:03:36,060 INFO L82 PathProgramCache]: Analyzing trace with hash -166561557, now seen corresponding path program 1 times [2020-12-22 15:03:36,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:03:36,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362133480] [2020-12-22 15:03:36,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:03:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:03:36,301 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 15:03:36,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362133480] [2020-12-22 15:03:36,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:03:36,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:03:36,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041447294] [2020-12-22 15:03:36,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:03:36,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:03:36,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:03:36,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:03:36,304 INFO L87 Difference]: Start difference. First operand 5812 states and 7355 transitions. Second operand 4 states. [2020-12-22 15:03:37,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:03:37,377 INFO L93 Difference]: Finished difference Result 25512 states and 31867 transitions. [2020-12-22 15:03:37,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:03:37,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 15:03:37,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:03:37,472 INFO L225 Difference]: With dead ends: 25512 [2020-12-22 15:03:37,472 INFO L226 Difference]: Without dead ends: 19725 [2020-12-22 15:03:37,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:03:37,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19725 states. [2020-12-22 15:03:38,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19725 to 11181. [2020-12-22 15:03:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11181 states. [2020-12-22 15:03:38,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11181 states to 11181 states and 14128 transitions. [2020-12-22 15:03:38,059 INFO L78 Accepts]: Start accepts. Automaton has 11181 states and 14128 transitions. Word has length 50 [2020-12-22 15:03:38,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:03:38,061 INFO L481 AbstractCegarLoop]: Abstraction has 11181 states and 14128 transitions. [2020-12-22 15:03:38,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:03:38,062 INFO L276 IsEmpty]: Start isEmpty. Operand 11181 states and 14128 transitions. [2020-12-22 15:03:38,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 15:03:38,063 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:03:38,063 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] [2020-12-22 15:03:38,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 15:03:38,064 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:03:38,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:03:38,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1221108834, now seen corresponding path program 1 times [2020-12-22 15:03:38,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:03:38,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900881002] [2020-12-22 15:03:38,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:03:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:03:38,277 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 15:03:38,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900881002] [2020-12-22 15:03:38,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:03:38,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:03:38,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146737447] [2020-12-22 15:03:38,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:03:38,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:03:38,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:03:38,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:03:38,280 INFO L87 Difference]: Start difference. First operand 11181 states and 14128 transitions. Second operand 4 states. [2020-12-22 15:03:39,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:03:39,795 INFO L93 Difference]: Finished difference Result 49695 states and 62010 transitions. [2020-12-22 15:03:39,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:03:39,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 15:03:39,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:03:39,894 INFO L225 Difference]: With dead ends: 49695 [2020-12-22 15:03:39,895 INFO L226 Difference]: Without dead ends: 38539 [2020-12-22 15:03:39,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:03:39,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38539 states. [2020-12-22 15:03:41,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38539 to 21544. [2020-12-22 15:03:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21544 states. [2020-12-22 15:03:41,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21544 states to 21544 states and 27146 transitions. [2020-12-22 15:03:41,176 INFO L78 Accepts]: Start accepts. Automaton has 21544 states and 27146 transitions. Word has length 51 [2020-12-22 15:03:41,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:03:41,177 INFO L481 AbstractCegarLoop]: Abstraction has 21544 states and 27146 transitions. [2020-12-22 15:03:41,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:03:41,177 INFO L276 IsEmpty]: Start isEmpty. Operand 21544 states and 27146 transitions. [2020-12-22 15:03:41,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 15:03:41,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:03:41,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:03:41,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 15:03:41,179 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:03:41,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:03:41,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1289218687, now seen corresponding path program 1 times [2020-12-22 15:03:41,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:03:41,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013468014] [2020-12-22 15:03:41,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:03:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:03:41,363 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 15:03:41,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013468014] [2020-12-22 15:03:41,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:03:41,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:03:41,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161008834] [2020-12-22 15:03:41,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:03:41,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:03:41,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:03:41,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:03:41,366 INFO L87 Difference]: Start difference. First operand 21544 states and 27146 transitions. Second operand 4 states. [2020-12-22 15:03:44,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:03:44,096 INFO L93 Difference]: Finished difference Result 96928 states and 120700 transitions. [2020-12-22 15:03:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:03:44,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 15:03:44,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:03:44,314 INFO L225 Difference]: With dead ends: 96928 [2020-12-22 15:03:44,314 INFO L226 Difference]: Without dead ends: 75409 [2020-12-22 15:03:44,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:03:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75409 states. [2020-12-22 15:03:46,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75409 to 41519. [2020-12-22 15:03:46,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41519 states. [2020-12-22 15:03:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41519 states to 41519 states and 52124 transitions. [2020-12-22 15:03:46,642 INFO L78 Accepts]: Start accepts. Automaton has 41519 states and 52124 transitions. Word has length 52 [2020-12-22 15:03:46,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:03:46,643 INFO L481 AbstractCegarLoop]: Abstraction has 41519 states and 52124 transitions. [2020-12-22 15:03:46,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:03:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 41519 states and 52124 transitions. [2020-12-22 15:03:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 15:03:46,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:03:46,645 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 15:03:46,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 15:03:46,646 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:03:46,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:03:46,646 INFO L82 PathProgramCache]: Analyzing trace with hash 868569317, now seen corresponding path program 1 times [2020-12-22 15:03:46,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:03:46,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236792022] [2020-12-22 15:03:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:03:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:03:46,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 15:03:46,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236792022] [2020-12-22 15:03:46,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:03:46,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:03:46,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347450177] [2020-12-22 15:03:46,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:03:46,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:03:46,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:03:46,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:03:46,911 INFO L87 Difference]: Start difference. First operand 41519 states and 52124 transitions. Second operand 5 states. [2020-12-22 15:03:50,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:03:50,887 INFO L93 Difference]: Finished difference Result 138511 states and 172896 transitions. [2020-12-22 15:03:50,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 15:03:50,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-12-22 15:03:50,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:03:51,109 INFO L225 Difference]: With dead ends: 138511 [2020-12-22 15:03:51,110 INFO L226 Difference]: Without dead ends: 97017 [2020-12-22 15:03:51,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:03:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97017 states. [2020-12-22 15:03:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97017 to 41599. [2020-12-22 15:03:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41599 states. [2020-12-22 15:03:53,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41599 states to 41599 states and 52204 transitions. [2020-12-22 15:03:53,891 INFO L78 Accepts]: Start accepts. Automaton has 41599 states and 52204 transitions. Word has length 57 [2020-12-22 15:03:53,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:03:53,892 INFO L481 AbstractCegarLoop]: Abstraction has 41599 states and 52204 transitions. [2020-12-22 15:03:53,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:03:53,892 INFO L276 IsEmpty]: Start isEmpty. Operand 41599 states and 52204 transitions. [2020-12-22 15:03:53,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 15:03:53,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:03:53,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:53,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 15:03:53,895 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:03:53,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:03:53,895 INFO L82 PathProgramCache]: Analyzing trace with hash -477338840, now seen corresponding path program 1 times [2020-12-22 15:03:53,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:03:53,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589708746] [2020-12-22 15:03:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:03:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:03:54,184 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 15:03:54,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589708746] [2020-12-22 15:03:54,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:03:54,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:03:54,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480865434] [2020-12-22 15:03:54,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:03:54,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:03:54,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:03:54,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:03:54,187 INFO L87 Difference]: Start difference. First operand 41599 states and 52204 transitions. Second operand 5 states. [2020-12-22 15:04:01,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:04:01,358 INFO L93 Difference]: Finished difference Result 167665 states and 214157 transitions. [2020-12-22 15:04:01,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:04:01,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-12-22 15:04:01,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:04:01,638 INFO L225 Difference]: With dead ends: 167665 [2020-12-22 15:04:01,638 INFO L226 Difference]: Without dead ends: 126091 [2020-12-22 15:04:01,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:04:01,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126091 states. [2020-12-22 15:04:06,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126091 to 97851. [2020-12-22 15:04:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97851 states. [2020-12-22 15:04:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97851 states to 97851 states and 125254 transitions. [2020-12-22 15:04:06,763 INFO L78 Accepts]: Start accepts. Automaton has 97851 states and 125254 transitions. Word has length 121 [2020-12-22 15:04:06,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:04:06,764 INFO L481 AbstractCegarLoop]: Abstraction has 97851 states and 125254 transitions. [2020-12-22 15:04:06,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:04:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 97851 states and 125254 transitions. [2020-12-22 15:04:06,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 15:04:06,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:04:06,766 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:04:06,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 15:04:06,767 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:04:06,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:04:06,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1306968425, now seen corresponding path program 1 times [2020-12-22 15:04:06,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:04:06,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976341753] [2020-12-22 15:04:06,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:04:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:04:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:04:07,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976341753] [2020-12-22 15:04:07,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:04:07,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:04:07,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152804908] [2020-12-22 15:04:07,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:04:07,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:04:07,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:04:07,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:04:07,229 INFO L87 Difference]: Start difference. First operand 97851 states and 125254 transitions. Second operand 3 states. [2020-12-22 15:04:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:04:15,535 INFO L93 Difference]: Finished difference Result 282703 states and 362220 transitions. [2020-12-22 15:04:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:04:15,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2020-12-22 15:04:15,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:04:16,026 INFO L225 Difference]: With dead ends: 282703 [2020-12-22 15:04:16,026 INFO L226 Difference]: Without dead ends: 184877 [2020-12-22 15:04:16,158 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 15:04:16,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184877 states. [2020-12-22 15:04:24,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184877 to 184741. [2020-12-22 15:04:24,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184741 states. [2020-12-22 15:04:24,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184741 states to 184741 states and 236781 transitions. [2020-12-22 15:04:24,865 INFO L78 Accepts]: Start accepts. Automaton has 184741 states and 236781 transitions. Word has length 147 [2020-12-22 15:04:24,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:04:24,866 INFO L481 AbstractCegarLoop]: Abstraction has 184741 states and 236781 transitions. [2020-12-22 15:04:24,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:04:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 184741 states and 236781 transitions. [2020-12-22 15:04:24,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 15:04:24,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:04:24,869 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:04:24,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 15:04:24,869 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:04:24,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:04:24,870 INFO L82 PathProgramCache]: Analyzing trace with hash -25232688, now seen corresponding path program 1 times [2020-12-22 15:04:24,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:04:24,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619954525] [2020-12-22 15:04:24,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:04:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:04:25,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 15:04:25,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619954525] [2020-12-22 15:04:25,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:04:25,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:04:25,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19631862] [2020-12-22 15:04:25,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:04:25,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:04:25,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:04:25,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:04:25,202 INFO L87 Difference]: Start difference. First operand 184741 states and 236781 transitions. Second operand 4 states. [2020-12-22 15:04:49,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:04:49,361 INFO L93 Difference]: Finished difference Result 731113 states and 937395 transitions. [2020-12-22 15:04:49,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:04:49,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-12-22 15:04:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:04:51,020 INFO L225 Difference]: With dead ends: 731113 [2020-12-22 15:04:51,020 INFO L226 Difference]: Without dead ends: 546397 [2020-12-22 15:04:51,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:04:52,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546397 states. [2020-12-22 15:05:03,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546397 to 184837. [2020-12-22 15:05:03,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184837 states. [2020-12-22 15:05:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184837 states to 184837 states and 236877 transitions. [2020-12-22 15:05:04,521 INFO L78 Accepts]: Start accepts. Automaton has 184837 states and 236877 transitions. Word has length 165 [2020-12-22 15:05:04,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:05:04,522 INFO L481 AbstractCegarLoop]: Abstraction has 184837 states and 236877 transitions. [2020-12-22 15:05:04,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:05:04,536 INFO L276 IsEmpty]: Start isEmpty. Operand 184837 states and 236877 transitions. [2020-12-22 15:05:04,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 15:05:04,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:05:04,547 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:05:04,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 15:05:04,558 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:05:04,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:05:04,559 INFO L82 PathProgramCache]: Analyzing trace with hash 985884562, now seen corresponding path program 1 times [2020-12-22 15:05:04,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:05:04,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165596052] [2020-12-22 15:05:04,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:05:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:05:05,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 15:05:05,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165596052] [2020-12-22 15:05:05,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:05:05,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:05:05,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742335481] [2020-12-22 15:05:05,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:05:05,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:05:05,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:05:05,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:05:05,096 INFO L87 Difference]: Start difference. First operand 184837 states and 236877 transitions. Second operand 3 states. [2020-12-22 15:05:14,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:05:14,632 INFO L93 Difference]: Finished difference Result 184837 states and 236877 transitions. [2020-12-22 15:05:14,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:05:14,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-12-22 15:05:14,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:05:15,102 INFO L225 Difference]: With dead ends: 184837 [2020-12-22 15:05:15,103 INFO L226 Difference]: Without dead ends: 184813 [2020-12-22 15:05:15,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:05:15,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184813 states. [2020-12-22 15:05:25,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184813 to 184813. [2020-12-22 15:05:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184813 states. [2020-12-22 15:05:25,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184813 states to 184813 states and 235745 transitions. [2020-12-22 15:05:25,493 INFO L78 Accepts]: Start accepts. Automaton has 184813 states and 235745 transitions. Word has length 165 [2020-12-22 15:05:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:05:25,493 INFO L481 AbstractCegarLoop]: Abstraction has 184813 states and 235745 transitions. [2020-12-22 15:05:25,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:05:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 184813 states and 235745 transitions. [2020-12-22 15:05:25,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-12-22 15:05:25,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:05:25,507 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:05:25,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 15:05:25,507 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:05:25,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:05:25,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1520091580, now seen corresponding path program 1 times [2020-12-22 15:05:25,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:05:25,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488757147] [2020-12-22 15:05:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:05:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:05:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 15:05:26,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488757147] [2020-12-22 15:05:26,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:05:26,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:05:26,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902477215] [2020-12-22 15:05:26,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:05:26,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:05:26,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:05:26,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:05:26,278 INFO L87 Difference]: Start difference. First operand 184813 states and 235745 transitions. Second operand 3 states.