/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:29:12,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:29:12,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:29:12,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:29:12,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:29:12,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:29:12,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:29:12,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:29:12,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:29:12,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:29:12,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:29:12,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:29:12,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:29:12,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:29:12,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:29:12,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:29:12,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:29:12,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:29:12,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:29:12,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:29:12,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:29:12,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:29:12,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:29:12,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:29:12,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:29:12,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:29:12,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:29:12,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:29:12,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:29:12,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:29:12,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:29:12,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:29:12,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:29:12,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:29:12,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:29:12,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:29:12,898 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:29:12,917 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:29:12,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:29:12,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:29:12,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:29:12,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:29:12,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:29:12,919 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:29:12,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:29:12,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:29:12,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:29:12,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:29:12,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:29:12,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:29:12,921 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:29:12,921 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:29:12,921 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:29:12,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:29:12,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:29:12,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:29:12,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:29:12,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:29:12,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:29:12,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:29:12,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:29:12,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:29:12,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:29:12,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:29:12,925 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:29:12,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:29:12,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:29:12,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:29:12,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:29:12,927 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:29:12,927 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:29:13,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:29:13,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:29:13,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:29:13,191 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:29:13,192 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:29:13,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2022-01-11 00:29:13,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35696283/3382e21ba557424ba1d085428fd48a0b/FLAG6932fd11e [2022-01-11 00:29:13,751 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:29:13,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2022-01-11 00:29:13,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35696283/3382e21ba557424ba1d085428fd48a0b/FLAG6932fd11e [2022-01-11 00:29:14,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35696283/3382e21ba557424ba1d085428fd48a0b [2022-01-11 00:29:14,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:29:14,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:29:14,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:29:14,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:29:14,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:29:14,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:29:14" (1/1) ... [2022-01-11 00:29:14,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c0e086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:14, skipping insertion in model container [2022-01-11 00:29:14,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:29:14" (1/1) ... [2022-01-11 00:29:14,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:29:14,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:29:14,380 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c[14373,14386] [2022-01-11 00:29:14,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:29:14,392 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:29:14,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c[14373,14386] [2022-01-11 00:29:14,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:29:14,455 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:29:14,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:14 WrapperNode [2022-01-11 00:29:14,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:29:14,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:29:14,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:29:14,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:29:14,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:14" (1/1) ... [2022-01-11 00:29:14,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:14" (1/1) ... [2022-01-11 00:29:14,509 INFO L137 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 459 [2022-01-11 00:29:14,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:29:14,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:29:14,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:29:14,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:29:14,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:14" (1/1) ... [2022-01-11 00:29:14,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:14" (1/1) ... [2022-01-11 00:29:14,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:14" (1/1) ... [2022-01-11 00:29:14,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:14" (1/1) ... [2022-01-11 00:29:14,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:14" (1/1) ... [2022-01-11 00:29:14,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:14" (1/1) ... [2022-01-11 00:29:14,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:14" (1/1) ... [2022-01-11 00:29:14,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:29:14,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:29:14,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:29:14,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:29:14,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:14" (1/1) ... [2022-01-11 00:29:14,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:29:14,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:29:14,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 00:29:14,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 00:29:14,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:29:14,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:29:14,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:29:14,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:29:14,715 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:29:14,716 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:29:15,322 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:29:15,335 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:29:15,336 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 00:29:15,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:29:15 BoogieIcfgContainer [2022-01-11 00:29:15,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:29:15,339 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:29:15,340 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:29:15,341 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:29:15,344 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:29:15" (1/1) ... [2022-01-11 00:29:15,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:29:15 BasicIcfg [2022-01-11 00:29:15,702 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:29:15,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:29:15,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:29:15,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:29:15,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:29:14" (1/4) ... [2022-01-11 00:29:15,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d40da64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:29:15, skipping insertion in model container [2022-01-11 00:29:15,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:14" (2/4) ... [2022-01-11 00:29:15,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d40da64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:29:15, skipping insertion in model container [2022-01-11 00:29:15,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:29:15" (3/4) ... [2022-01-11 00:29:15,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d40da64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:29:15, skipping insertion in model container [2022-01-11 00:29:15,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:29:15" (4/4) ... [2022-01-11 00:29:15,711 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.cTransformedIcfg [2022-01-11 00:29:15,716 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:29:15,716 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:29:15,763 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:29:15,773 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:29:15,774 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:29:15,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 141 states have (on average 1.7588652482269505) internal successors, (248), 142 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 00:29:15,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:15,801 INFO L514 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] [2022-01-11 00:29:15,801 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:15,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:15,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1568228201, now seen corresponding path program 1 times [2022-01-11 00:29:15,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:15,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460784029] [2022-01-11 00:29:15,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:15,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:16,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:16,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460784029] [2022-01-11 00:29:16,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460784029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:16,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:16,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:29:16,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807442138] [2022-01-11 00:29:16,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:16,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 00:29:16,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:16,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 00:29:16,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:29:16,088 INFO L87 Difference]: Start difference. First operand has 143 states, 141 states have (on average 1.7588652482269505) internal successors, (248), 142 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:16,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:16,127 INFO L93 Difference]: Finished difference Result 227 states and 388 transitions. [2022-01-11 00:29:16,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 00:29:16,130 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-11 00:29:16,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:16,140 INFO L225 Difference]: With dead ends: 227 [2022-01-11 00:29:16,140 INFO L226 Difference]: Without dead ends: 139 [2022-01-11 00:29:16,143 INFO L932 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 [2022-01-11 00:29:16,149 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:16,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:16,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-01-11 00:29:16,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-01-11 00:29:16,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.7463768115942029) internal successors, (241), 138 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:16,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 241 transitions. [2022-01-11 00:29:16,199 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 241 transitions. Word has length 37 [2022-01-11 00:29:16,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:16,200 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 241 transitions. [2022-01-11 00:29:16,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:16,201 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 241 transitions. [2022-01-11 00:29:16,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 00:29:16,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:16,207 INFO L514 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] [2022-01-11 00:29:16,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:29:16,207 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:16,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:16,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1159403976, now seen corresponding path program 1 times [2022-01-11 00:29:16,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:16,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403219076] [2022-01-11 00:29:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:16,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:16,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:16,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403219076] [2022-01-11 00:29:16,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403219076] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:16,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:16,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:29:16,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618572464] [2022-01-11 00:29:16,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:16,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:29:16,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:16,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:29:16,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:16,518 INFO L87 Difference]: Start difference. First operand 139 states and 241 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:16,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:16,626 INFO L93 Difference]: Finished difference Result 222 states and 378 transitions. [2022-01-11 00:29:16,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:29:16,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-11 00:29:16,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:16,629 INFO L225 Difference]: With dead ends: 222 [2022-01-11 00:29:16,630 INFO L226 Difference]: Without dead ends: 139 [2022-01-11 00:29:16,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:29:16,636 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 3 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:16,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 923 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:29:16,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-01-11 00:29:16,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-01-11 00:29:16,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.5289855072463767) internal successors, (211), 138 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 211 transitions. [2022-01-11 00:29:16,646 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 211 transitions. Word has length 37 [2022-01-11 00:29:16,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:16,646 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 211 transitions. [2022-01-11 00:29:16,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:16,646 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 211 transitions. [2022-01-11 00:29:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 00:29:16,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:16,647 INFO L514 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] [2022-01-11 00:29:16,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:29:16,648 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:16,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:16,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1832970799, now seen corresponding path program 1 times [2022-01-11 00:29:16,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:16,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201402307] [2022-01-11 00:29:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:16,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:16,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:16,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201402307] [2022-01-11 00:29:16,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201402307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:16,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:16,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:16,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304733705] [2022-01-11 00:29:16,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:16,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:16,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:16,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:16,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:16,965 INFO L87 Difference]: Start difference. First operand 139 states and 211 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:18,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:29:19,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:19,226 INFO L93 Difference]: Finished difference Result 287 states and 459 transitions. [2022-01-11 00:29:19,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:19,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 00:29:19,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:19,228 INFO L225 Difference]: With dead ends: 287 [2022-01-11 00:29:19,228 INFO L226 Difference]: Without dead ends: 208 [2022-01-11 00:29:19,229 INFO L932 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 [2022-01-11 00:29:19,229 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 107 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:19,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 378 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 00:29:19,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-01-11 00:29:19,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2022-01-11 00:29:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.5609756097560976) internal successors, (320), 205 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:19,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2022-01-11 00:29:19,254 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 66 [2022-01-11 00:29:19,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:19,254 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2022-01-11 00:29:19,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:19,255 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2022-01-11 00:29:19,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 00:29:19,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:19,259 INFO L514 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] [2022-01-11 00:29:19,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:29:19,259 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:19,260 INFO L85 PathProgramCache]: Analyzing trace with hash -534973050, now seen corresponding path program 1 times [2022-01-11 00:29:19,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:19,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256506320] [2022-01-11 00:29:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:19,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:19,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:19,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:19,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256506320] [2022-01-11 00:29:19,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256506320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:19,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:19,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:19,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788401068] [2022-01-11 00:29:19,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:19,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:19,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:19,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:19,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:19,445 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:19,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:19,528 INFO L93 Difference]: Finished difference Result 579 states and 893 transitions. [2022-01-11 00:29:19,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:19,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 00:29:19,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:19,530 INFO L225 Difference]: With dead ends: 579 [2022-01-11 00:29:19,530 INFO L226 Difference]: Without dead ends: 398 [2022-01-11 00:29:19,531 INFO L932 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 [2022-01-11 00:29:19,532 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 542 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:19,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 401 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:19,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-01-11 00:29:19,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 396. [2022-01-11 00:29:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.5443037974683544) internal successors, (610), 395 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:19,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 610 transitions. [2022-01-11 00:29:19,556 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 610 transitions. Word has length 68 [2022-01-11 00:29:19,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:19,557 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 610 transitions. [2022-01-11 00:29:19,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:19,557 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 610 transitions. [2022-01-11 00:29:19,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 00:29:19,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:19,558 INFO L514 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] [2022-01-11 00:29:19,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:29:19,559 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:19,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:19,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1845891030, now seen corresponding path program 1 times [2022-01-11 00:29:19,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:19,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979973532] [2022-01-11 00:29:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:19,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:19,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:19,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979973532] [2022-01-11 00:29:19,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979973532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:19,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:19,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:19,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038527813] [2022-01-11 00:29:19,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:19,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:19,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:19,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:19,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:19,689 INFO L87 Difference]: Start difference. First operand 396 states and 610 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:19,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:19,725 INFO L93 Difference]: Finished difference Result 671 states and 1072 transitions. [2022-01-11 00:29:19,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:19,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 00:29:19,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:19,728 INFO L225 Difference]: With dead ends: 671 [2022-01-11 00:29:19,729 INFO L226 Difference]: Without dead ends: 519 [2022-01-11 00:29:19,729 INFO L932 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 [2022-01-11 00:29:19,730 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 116 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:19,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 480 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:19,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-01-11 00:29:19,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 517. [2022-01-11 00:29:19,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.571705426356589) internal successors, (811), 516 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:19,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 811 transitions. [2022-01-11 00:29:19,754 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 811 transitions. Word has length 69 [2022-01-11 00:29:19,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:19,755 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 811 transitions. [2022-01-11 00:29:19,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:19,755 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 811 transitions. [2022-01-11 00:29:19,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 00:29:19,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:19,756 INFO L514 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] [2022-01-11 00:29:19,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:29:19,756 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:19,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:19,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1525756003, now seen corresponding path program 1 times [2022-01-11 00:29:19,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:19,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948390869] [2022-01-11 00:29:19,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:19,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:19,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:19,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948390869] [2022-01-11 00:29:19,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948390869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:19,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:19,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:19,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650338538] [2022-01-11 00:29:19,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:19,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:19,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:19,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:19,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:19,875 INFO L87 Difference]: Start difference. First operand 517 states and 811 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:19,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:19,927 INFO L93 Difference]: Finished difference Result 1056 states and 1710 transitions. [2022-01-11 00:29:19,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:19,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 00:29:19,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:19,932 INFO L225 Difference]: With dead ends: 1056 [2022-01-11 00:29:19,932 INFO L226 Difference]: Without dead ends: 657 [2022-01-11 00:29:19,933 INFO L932 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 [2022-01-11 00:29:19,936 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 121 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:19,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 409 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:19,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-01-11 00:29:19,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 645. [2022-01-11 00:29:19,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 1.5885093167701863) internal successors, (1023), 644 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:19,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1023 transitions. [2022-01-11 00:29:19,965 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1023 transitions. Word has length 69 [2022-01-11 00:29:19,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:19,966 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 1023 transitions. [2022-01-11 00:29:19,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:19,966 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1023 transitions. [2022-01-11 00:29:19,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 00:29:19,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:19,968 INFO L514 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] [2022-01-11 00:29:19,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:29:19,968 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:19,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2098637987, now seen corresponding path program 1 times [2022-01-11 00:29:19,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:19,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594861296] [2022-01-11 00:29:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:19,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:20,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:20,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594861296] [2022-01-11 00:29:20,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594861296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:20,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:20,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:20,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222269751] [2022-01-11 00:29:20,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:20,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:20,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:20,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:20,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:20,045 INFO L87 Difference]: Start difference. First operand 645 states and 1023 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:20,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:20,086 INFO L93 Difference]: Finished difference Result 1897 states and 3005 transitions. [2022-01-11 00:29:20,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:20,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 00:29:20,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:20,092 INFO L225 Difference]: With dead ends: 1897 [2022-01-11 00:29:20,092 INFO L226 Difference]: Without dead ends: 1280 [2022-01-11 00:29:20,093 INFO L932 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 [2022-01-11 00:29:20,096 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 200 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:20,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 610 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:20,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-01-11 00:29:20,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 647. [2022-01-11 00:29:20,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.5866873065015479) internal successors, (1025), 646 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:20,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1025 transitions. [2022-01-11 00:29:20,150 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1025 transitions. Word has length 69 [2022-01-11 00:29:20,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:20,150 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1025 transitions. [2022-01-11 00:29:20,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:20,150 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1025 transitions. [2022-01-11 00:29:20,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 00:29:20,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:20,151 INFO L514 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] [2022-01-11 00:29:20,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:29:20,152 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:20,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:20,152 INFO L85 PathProgramCache]: Analyzing trace with hash 106920449, now seen corresponding path program 1 times [2022-01-11 00:29:20,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:20,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121955995] [2022-01-11 00:29:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:20,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:20,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:20,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121955995] [2022-01-11 00:29:20,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121955995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:20,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:20,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:29:20,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601464970] [2022-01-11 00:29:20,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:20,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:29:20,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:20,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:29:20,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:20,292 INFO L87 Difference]: Start difference. First operand 647 states and 1025 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:20,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:20,383 INFO L93 Difference]: Finished difference Result 1832 states and 2895 transitions. [2022-01-11 00:29:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:20,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-11 00:29:20,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:20,389 INFO L225 Difference]: With dead ends: 1832 [2022-01-11 00:29:20,389 INFO L226 Difference]: Without dead ends: 1197 [2022-01-11 00:29:20,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:20,391 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 537 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:20,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 505 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:20,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2022-01-11 00:29:20,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1195. [2022-01-11 00:29:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 1.5661641541038527) internal successors, (1870), 1194 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:20,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1870 transitions. [2022-01-11 00:29:20,450 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1870 transitions. Word has length 70 [2022-01-11 00:29:20,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:20,454 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 1870 transitions. [2022-01-11 00:29:20,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1870 transitions. [2022-01-11 00:29:20,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 00:29:20,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:20,461 INFO L514 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] [2022-01-11 00:29:20,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:29:20,461 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:20,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:20,462 INFO L85 PathProgramCache]: Analyzing trace with hash -59292571, now seen corresponding path program 1 times [2022-01-11 00:29:20,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:20,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949111378] [2022-01-11 00:29:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:20,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:20,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:20,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949111378] [2022-01-11 00:29:20,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949111378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:20,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:20,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:20,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122712399] [2022-01-11 00:29:20,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:20,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:20,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:20,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:20,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:20,547 INFO L87 Difference]: Start difference. First operand 1195 states and 1870 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:20,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:20,611 INFO L93 Difference]: Finished difference Result 2133 states and 3336 transitions. [2022-01-11 00:29:20,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:20,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-11 00:29:20,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:20,616 INFO L225 Difference]: With dead ends: 2133 [2022-01-11 00:29:20,616 INFO L226 Difference]: Without dead ends: 954 [2022-01-11 00:29:20,617 INFO L932 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 [2022-01-11 00:29:20,619 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 69 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:20,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 668 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:20,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2022-01-11 00:29:20,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 954. [2022-01-11 00:29:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 953 states have (on average 1.5634837355718783) internal successors, (1490), 953 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:20,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1490 transitions. [2022-01-11 00:29:20,737 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1490 transitions. Word has length 70 [2022-01-11 00:29:20,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:20,738 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1490 transitions. [2022-01-11 00:29:20,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:20,738 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1490 transitions. [2022-01-11 00:29:20,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 00:29:20,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:20,739 INFO L514 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] [2022-01-11 00:29:20,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:29:20,740 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash 460531217, now seen corresponding path program 1 times [2022-01-11 00:29:20,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:20,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285384696] [2022-01-11 00:29:20,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:20,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:20,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:20,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285384696] [2022-01-11 00:29:20,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285384696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:20,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:20,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:20,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713377383] [2022-01-11 00:29:20,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:20,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:20,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:20,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:20,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:20,806 INFO L87 Difference]: Start difference. First operand 954 states and 1490 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:20,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:20,858 INFO L93 Difference]: Finished difference Result 1886 states and 2937 transitions. [2022-01-11 00:29:20,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:20,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-11 00:29:20,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:20,863 INFO L225 Difference]: With dead ends: 1886 [2022-01-11 00:29:20,863 INFO L226 Difference]: Without dead ends: 1261 [2022-01-11 00:29:20,865 INFO L932 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 [2022-01-11 00:29:20,865 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 197 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:20,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 421 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:20,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2022-01-11 00:29:20,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 954. [2022-01-11 00:29:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 953 states have (on average 1.5624344176285414) internal successors, (1489), 953 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1489 transitions. [2022-01-11 00:29:20,916 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1489 transitions. Word has length 72 [2022-01-11 00:29:20,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:20,916 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1489 transitions. [2022-01-11 00:29:20,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:20,917 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1489 transitions. [2022-01-11 00:29:20,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 00:29:20,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:20,918 INFO L514 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] [2022-01-11 00:29:20,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:29:20,918 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:20,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:20,919 INFO L85 PathProgramCache]: Analyzing trace with hash 497562866, now seen corresponding path program 1 times [2022-01-11 00:29:20,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:20,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887143509] [2022-01-11 00:29:20,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:20,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:21,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:21,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887143509] [2022-01-11 00:29:21,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887143509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:21,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:21,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:21,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614253345] [2022-01-11 00:29:21,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:21,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:21,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:21,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:21,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:21,117 INFO L87 Difference]: Start difference. First operand 954 states and 1489 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:29:23,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:23,339 INFO L93 Difference]: Finished difference Result 2430 states and 3905 transitions. [2022-01-11 00:29:23,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:23,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 00:29:23,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,346 INFO L225 Difference]: With dead ends: 2430 [2022-01-11 00:29:23,346 INFO L226 Difference]: Without dead ends: 1646 [2022-01-11 00:29:23,352 INFO L932 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 [2022-01-11 00:29:23,353 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 106 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:23,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 391 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-11 00:29:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2022-01-11 00:29:23,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1644. [2022-01-11 00:29:23,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1643 states have (on average 1.5873402312842362) internal successors, (2608), 1643 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2608 transitions. [2022-01-11 00:29:23,463 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2608 transitions. Word has length 73 [2022-01-11 00:29:23,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:23,463 INFO L470 AbstractCegarLoop]: Abstraction has 1644 states and 2608 transitions. [2022-01-11 00:29:23,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2608 transitions. [2022-01-11 00:29:23,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 00:29:23,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:23,464 INFO L514 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] [2022-01-11 00:29:23,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:29:23,465 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:23,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:23,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1175527607, now seen corresponding path program 1 times [2022-01-11 00:29:23,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:23,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289636587] [2022-01-11 00:29:23,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:23,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:23,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:23,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289636587] [2022-01-11 00:29:23,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289636587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:23,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:23,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:23,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13838574] [2022-01-11 00:29:23,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:23,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:23,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:23,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:23,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:23,591 INFO L87 Difference]: Start difference. First operand 1644 states and 2608 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:23,811 INFO L93 Difference]: Finished difference Result 4781 states and 7578 transitions. [2022-01-11 00:29:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:23,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-11 00:29:23,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,824 INFO L225 Difference]: With dead ends: 4781 [2022-01-11 00:29:23,825 INFO L226 Difference]: Without dead ends: 3184 [2022-01-11 00:29:23,829 INFO L932 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 [2022-01-11 00:29:23,829 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 500 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:23,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 395 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:23,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2022-01-11 00:29:24,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 3182. [2022-01-11 00:29:24,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3182 states, 3181 states have (on average 1.575290789060044) internal successors, (5011), 3181 states have internal predecessors, (5011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:24,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 5011 transitions. [2022-01-11 00:29:24,048 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 5011 transitions. Word has length 75 [2022-01-11 00:29:24,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:24,049 INFO L470 AbstractCegarLoop]: Abstraction has 3182 states and 5011 transitions. [2022-01-11 00:29:24,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 5011 transitions. [2022-01-11 00:29:24,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:29:24,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:24,051 INFO L514 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] [2022-01-11 00:29:24,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:29:24,052 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:24,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:24,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1983048574, now seen corresponding path program 1 times [2022-01-11 00:29:24,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:24,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672833745] [2022-01-11 00:29:24,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:24,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:24,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:24,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672833745] [2022-01-11 00:29:24,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672833745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:24,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:24,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:24,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292924734] [2022-01-11 00:29:24,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:24,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:24,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:24,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:24,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:24,138 INFO L87 Difference]: Start difference. First operand 3182 states and 5011 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:24,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:24,377 INFO L93 Difference]: Finished difference Result 7433 states and 11912 transitions. [2022-01-11 00:29:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:24,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:29:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:24,395 INFO L225 Difference]: With dead ends: 7433 [2022-01-11 00:29:24,396 INFO L226 Difference]: Without dead ends: 4565 [2022-01-11 00:29:24,400 INFO L932 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 [2022-01-11 00:29:24,401 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 112 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:24,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 407 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:24,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4565 states. [2022-01-11 00:29:24,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4565 to 4451. [2022-01-11 00:29:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4451 states, 4450 states have (on average 1.5757303370786517) internal successors, (7012), 4450 states have internal predecessors, (7012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 7012 transitions. [2022-01-11 00:29:24,664 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 7012 transitions. Word has length 76 [2022-01-11 00:29:24,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:24,665 INFO L470 AbstractCegarLoop]: Abstraction has 4451 states and 7012 transitions. [2022-01-11 00:29:24,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:24,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 7012 transitions. [2022-01-11 00:29:24,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:29:24,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:24,667 INFO L514 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] [2022-01-11 00:29:24,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:29:24,668 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:24,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:24,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1327053852, now seen corresponding path program 1 times [2022-01-11 00:29:24,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:24,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943465744] [2022-01-11 00:29:24,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:24,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:24,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:24,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943465744] [2022-01-11 00:29:24,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943465744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:24,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:24,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:24,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545201809] [2022-01-11 00:29:24,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:24,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:24,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:24,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:24,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:24,742 INFO L87 Difference]: Start difference. First operand 4451 states and 7012 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:25,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:25,164 INFO L93 Difference]: Finished difference Result 12120 states and 19204 transitions. [2022-01-11 00:29:25,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:25,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:29:25,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:25,211 INFO L225 Difference]: With dead ends: 12120 [2022-01-11 00:29:25,212 INFO L226 Difference]: Without dead ends: 7843 [2022-01-11 00:29:25,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:25,223 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 376 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:25,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 549 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7843 states. [2022-01-11 00:29:25,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7843 to 7841. [2022-01-11 00:29:25,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7841 states, 7840 states have (on average 1.563137755102041) internal successors, (12255), 7840 states have internal predecessors, (12255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:25,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 12255 transitions. [2022-01-11 00:29:25,754 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 12255 transitions. Word has length 76 [2022-01-11 00:29:25,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:25,755 INFO L470 AbstractCegarLoop]: Abstraction has 7841 states and 12255 transitions. [2022-01-11 00:29:25,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:25,755 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 12255 transitions. [2022-01-11 00:29:25,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:29:25,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:25,758 INFO L514 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] [2022-01-11 00:29:25,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:29:25,759 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:25,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:25,759 INFO L85 PathProgramCache]: Analyzing trace with hash -372824957, now seen corresponding path program 1 times [2022-01-11 00:29:25,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:25,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015940576] [2022-01-11 00:29:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:25,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:25,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:25,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015940576] [2022-01-11 00:29:25,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015940576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:25,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:25,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:25,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845739157] [2022-01-11 00:29:25,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:25,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:25,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:25,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:25,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:25,810 INFO L87 Difference]: Start difference. First operand 7841 states and 12255 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:26,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:26,466 INFO L93 Difference]: Finished difference Result 23233 states and 36400 transitions. [2022-01-11 00:29:26,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:26,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:29:26,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:26,502 INFO L225 Difference]: With dead ends: 23233 [2022-01-11 00:29:26,503 INFO L226 Difference]: Without dead ends: 15546 [2022-01-11 00:29:26,514 INFO L932 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 [2022-01-11 00:29:26,515 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 186 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:26,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 590 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:26,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15546 states. [2022-01-11 00:29:26,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15546 to 7847. [2022-01-11 00:29:27,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7847 states, 7846 states have (on average 1.562707111904155) internal successors, (12261), 7846 states have internal predecessors, (12261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7847 states to 7847 states and 12261 transitions. [2022-01-11 00:29:27,027 INFO L78 Accepts]: Start accepts. Automaton has 7847 states and 12261 transitions. Word has length 76 [2022-01-11 00:29:27,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:27,028 INFO L470 AbstractCegarLoop]: Abstraction has 7847 states and 12261 transitions. [2022-01-11 00:29:27,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:27,028 INFO L276 IsEmpty]: Start isEmpty. Operand 7847 states and 12261 transitions. [2022-01-11 00:29:27,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:29:27,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:27,030 INFO L514 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] [2022-01-11 00:29:27,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:29:27,031 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:27,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:27,031 INFO L85 PathProgramCache]: Analyzing trace with hash -970000305, now seen corresponding path program 1 times [2022-01-11 00:29:27,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:27,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933674992] [2022-01-11 00:29:27,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:27,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:27,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:27,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933674992] [2022-01-11 00:29:27,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933674992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:27,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:27,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:27,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751179043] [2022-01-11 00:29:27,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:27,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:27,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:27,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:27,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:27,114 INFO L87 Difference]: Start difference. First operand 7847 states and 12261 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:27,630 INFO L93 Difference]: Finished difference Result 15032 states and 23726 transitions. [2022-01-11 00:29:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:27,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:29:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:27,655 INFO L225 Difference]: With dead ends: 15032 [2022-01-11 00:29:27,655 INFO L226 Difference]: Without dead ends: 10189 [2022-01-11 00:29:27,662 INFO L932 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 [2022-01-11 00:29:27,663 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 107 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:27,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 467 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:27,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10189 states. [2022-01-11 00:29:28,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10189 to 10187. [2022-01-11 00:29:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10187 states, 10186 states have (on average 1.5647948164146868) internal successors, (15939), 10186 states have internal predecessors, (15939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:28,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10187 states to 10187 states and 15939 transitions. [2022-01-11 00:29:28,179 INFO L78 Accepts]: Start accepts. Automaton has 10187 states and 15939 transitions. Word has length 76 [2022-01-11 00:29:28,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:28,179 INFO L470 AbstractCegarLoop]: Abstraction has 10187 states and 15939 transitions. [2022-01-11 00:29:28,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:28,180 INFO L276 IsEmpty]: Start isEmpty. Operand 10187 states and 15939 transitions. [2022-01-11 00:29:28,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:28,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:28,182 INFO L514 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] [2022-01-11 00:29:28,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:29:28,182 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:28,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:28,183 INFO L85 PathProgramCache]: Analyzing trace with hash -696278929, now seen corresponding path program 1 times [2022-01-11 00:29:28,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:28,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121979422] [2022-01-11 00:29:28,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:28,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:28,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:28,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121979422] [2022-01-11 00:29:28,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121979422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:28,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:28,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:28,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058820097] [2022-01-11 00:29:28,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:28,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:28,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:28,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:28,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:28,271 INFO L87 Difference]: Start difference. First operand 10187 states and 15939 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:29,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:29,092 INFO L93 Difference]: Finished difference Result 22353 states and 34965 transitions. [2022-01-11 00:29:29,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:29,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 00:29:29,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:29,127 INFO L225 Difference]: With dead ends: 22353 [2022-01-11 00:29:29,127 INFO L226 Difference]: Without dead ends: 15698 [2022-01-11 00:29:29,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:29,140 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 492 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:29,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 476 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:29,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15698 states. [2022-01-11 00:29:29,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15698 to 10184. [2022-01-11 00:29:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10184 states, 10183 states have (on average 1.5645683983109104) internal successors, (15932), 10183 states have internal predecessors, (15932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:29,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10184 states to 10184 states and 15932 transitions. [2022-01-11 00:29:29,794 INFO L78 Accepts]: Start accepts. Automaton has 10184 states and 15932 transitions. Word has length 77 [2022-01-11 00:29:29,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:29,794 INFO L470 AbstractCegarLoop]: Abstraction has 10184 states and 15932 transitions. [2022-01-11 00:29:29,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:29,794 INFO L276 IsEmpty]: Start isEmpty. Operand 10184 states and 15932 transitions. [2022-01-11 00:29:29,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:29,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:29,796 INFO L514 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] [2022-01-11 00:29:29,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:29:29,797 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:29,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:29,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1553915253, now seen corresponding path program 1 times [2022-01-11 00:29:29,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:29,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704725559] [2022-01-11 00:29:29,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:29,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:29,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:29,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704725559] [2022-01-11 00:29:29,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704725559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:29,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:29,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:29,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68518677] [2022-01-11 00:29:29,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:29,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:29,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:29,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:29,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:29,876 INFO L87 Difference]: Start difference. First operand 10184 states and 15932 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:30,332 INFO L93 Difference]: Finished difference Result 15290 states and 23942 transitions. [2022-01-11 00:29:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:30,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 00:29:30,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:30,355 INFO L225 Difference]: With dead ends: 15290 [2022-01-11 00:29:30,356 INFO L226 Difference]: Without dead ends: 8630 [2022-01-11 00:29:30,364 INFO L932 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 [2022-01-11 00:29:30,364 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 47 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:30,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 646 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8630 states. [2022-01-11 00:29:30,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8630 to 8630. [2022-01-11 00:29:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8630 states, 8629 states have (on average 1.5619422876347202) internal successors, (13478), 8629 states have internal predecessors, (13478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:30,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8630 states to 8630 states and 13478 transitions. [2022-01-11 00:29:30,802 INFO L78 Accepts]: Start accepts. Automaton has 8630 states and 13478 transitions. Word has length 77 [2022-01-11 00:29:30,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:30,803 INFO L470 AbstractCegarLoop]: Abstraction has 8630 states and 13478 transitions. [2022-01-11 00:29:30,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:30,803 INFO L276 IsEmpty]: Start isEmpty. Operand 8630 states and 13478 transitions. [2022-01-11 00:29:30,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:30,804 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:30,805 INFO L514 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] [2022-01-11 00:29:30,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:29:30,805 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:30,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:30,805 INFO L85 PathProgramCache]: Analyzing trace with hash 756461332, now seen corresponding path program 1 times [2022-01-11 00:29:30,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:30,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025276388] [2022-01-11 00:29:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:30,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:30,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:30,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025276388] [2022-01-11 00:29:30,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025276388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:30,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:30,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:29:30,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441297636] [2022-01-11 00:29:30,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:30,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:29:30,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:30,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:29:30,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:30,966 INFO L87 Difference]: Start difference. First operand 8630 states and 13478 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:31,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:31,596 INFO L93 Difference]: Finished difference Result 19175 states and 29882 transitions. [2022-01-11 00:29:31,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:29:31,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 00:29:31,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:31,624 INFO L225 Difference]: With dead ends: 19175 [2022-01-11 00:29:31,625 INFO L226 Difference]: Without dead ends: 12426 [2022-01-11 00:29:31,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:29:31,640 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 684 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:31,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 632 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:31,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12426 states. [2022-01-11 00:29:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12426 to 8840. [2022-01-11 00:29:32,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8840 states, 8839 states have (on average 1.5513067089037222) internal successors, (13712), 8839 states have internal predecessors, (13712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:32,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8840 states to 8840 states and 13712 transitions. [2022-01-11 00:29:32,216 INFO L78 Accepts]: Start accepts. Automaton has 8840 states and 13712 transitions. Word has length 77 [2022-01-11 00:29:32,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:32,216 INFO L470 AbstractCegarLoop]: Abstraction has 8840 states and 13712 transitions. [2022-01-11 00:29:32,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:32,217 INFO L276 IsEmpty]: Start isEmpty. Operand 8840 states and 13712 transitions. [2022-01-11 00:29:32,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:32,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:32,219 INFO L514 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] [2022-01-11 00:29:32,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:29:32,219 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:32,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:32,219 INFO L85 PathProgramCache]: Analyzing trace with hash -101174992, now seen corresponding path program 1 times [2022-01-11 00:29:32,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:32,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197227597] [2022-01-11 00:29:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:32,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:32,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:32,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197227597] [2022-01-11 00:29:32,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197227597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:32,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:32,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:32,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773223930] [2022-01-11 00:29:32,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:32,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:32,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:32,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:32,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:32,283 INFO L87 Difference]: Start difference. First operand 8840 states and 13712 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:32,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:32,669 INFO L93 Difference]: Finished difference Result 16271 states and 25222 transitions. [2022-01-11 00:29:32,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:32,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 00:29:32,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:32,682 INFO L225 Difference]: With dead ends: 16271 [2022-01-11 00:29:32,683 INFO L226 Difference]: Without dead ends: 7474 [2022-01-11 00:29:32,692 INFO L932 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 [2022-01-11 00:29:32,693 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 45 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:32,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 640 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:32,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2022-01-11 00:29:33,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 7474. [2022-01-11 00:29:33,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7474 states, 7473 states have (on average 1.5479727017262144) internal successors, (11568), 7473 states have internal predecessors, (11568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:33,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7474 states to 7474 states and 11568 transitions. [2022-01-11 00:29:33,065 INFO L78 Accepts]: Start accepts. Automaton has 7474 states and 11568 transitions. Word has length 77 [2022-01-11 00:29:33,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:33,065 INFO L470 AbstractCegarLoop]: Abstraction has 7474 states and 11568 transitions. [2022-01-11 00:29:33,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:33,065 INFO L276 IsEmpty]: Start isEmpty. Operand 7474 states and 11568 transitions. [2022-01-11 00:29:33,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 00:29:33,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:33,067 INFO L514 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] [2022-01-11 00:29:33,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:29:33,068 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:33,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:33,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1109974634, now seen corresponding path program 1 times [2022-01-11 00:29:33,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:33,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356625299] [2022-01-11 00:29:33,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:33,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:33,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:33,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356625299] [2022-01-11 00:29:33,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356625299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:33,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:33,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:33,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078821072] [2022-01-11 00:29:33,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:33,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:33,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:33,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:33,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:33,112 INFO L87 Difference]: Start difference. First operand 7474 states and 11568 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:33,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:33,465 INFO L93 Difference]: Finished difference Result 13954 states and 21600 transitions. [2022-01-11 00:29:33,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:33,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-11 00:29:33,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:33,480 INFO L225 Difference]: With dead ends: 13954 [2022-01-11 00:29:33,480 INFO L226 Difference]: Without dead ends: 10313 [2022-01-11 00:29:33,486 INFO L932 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 [2022-01-11 00:29:33,486 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 182 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:33,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 502 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:33,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10313 states. [2022-01-11 00:29:33,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10313 to 7474. [2022-01-11 00:29:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7474 states, 7473 states have (on average 1.5477050715910612) internal successors, (11566), 7473 states have internal predecessors, (11566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:33,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7474 states to 7474 states and 11566 transitions. [2022-01-11 00:29:33,873 INFO L78 Accepts]: Start accepts. Automaton has 7474 states and 11566 transitions. Word has length 79 [2022-01-11 00:29:33,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:33,874 INFO L470 AbstractCegarLoop]: Abstraction has 7474 states and 11566 transitions. [2022-01-11 00:29:33,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:33,874 INFO L276 IsEmpty]: Start isEmpty. Operand 7474 states and 11566 transitions. [2022-01-11 00:29:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 00:29:33,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:33,876 INFO L514 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] [2022-01-11 00:29:33,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 00:29:33,876 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:33,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:33,877 INFO L85 PathProgramCache]: Analyzing trace with hash -776018099, now seen corresponding path program 1 times [2022-01-11 00:29:33,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:33,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442907946] [2022-01-11 00:29:33,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:33,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:34,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:34,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442907946] [2022-01-11 00:29:34,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442907946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:34,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:34,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:34,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679852181] [2022-01-11 00:29:34,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:34,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:34,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:34,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:34,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:34,062 INFO L87 Difference]: Start difference. First operand 7474 states and 11566 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:36,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:29:38,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:29:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:38,987 INFO L93 Difference]: Finished difference Result 20502 states and 32144 transitions. [2022-01-11 00:29:38,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:38,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-11 00:29:38,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:39,008 INFO L225 Difference]: With dead ends: 20502 [2022-01-11 00:29:39,008 INFO L226 Difference]: Without dead ends: 13508 [2022-01-11 00:29:39,020 INFO L932 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 [2022-01-11 00:29:39,021 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 97 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:39,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 371 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-01-11 00:29:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13508 states. [2022-01-11 00:29:39,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13508 to 13506. [2022-01-11 00:29:39,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13506 states, 13505 states have (on average 1.554239170677527) internal successors, (20990), 13505 states have internal predecessors, (20990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13506 states to 13506 states and 20990 transitions. [2022-01-11 00:29:39,800 INFO L78 Accepts]: Start accepts. Automaton has 13506 states and 20990 transitions. Word has length 80 [2022-01-11 00:29:39,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:39,800 INFO L470 AbstractCegarLoop]: Abstraction has 13506 states and 20990 transitions. [2022-01-11 00:29:39,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:39,800 INFO L276 IsEmpty]: Start isEmpty. Operand 13506 states and 20990 transitions. [2022-01-11 00:29:39,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 00:29:39,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:39,802 INFO L514 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] [2022-01-11 00:29:39,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 00:29:39,802 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:39,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:39,803 INFO L85 PathProgramCache]: Analyzing trace with hash 644647588, now seen corresponding path program 1 times [2022-01-11 00:29:39,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:39,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497839738] [2022-01-11 00:29:39,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:39,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:39,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:39,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497839738] [2022-01-11 00:29:39,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497839738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:39,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:39,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:39,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138016290] [2022-01-11 00:29:39,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:39,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:39,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:39,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:39,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:39,910 INFO L87 Difference]: Start difference. First operand 13506 states and 20990 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:41,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:41,052 INFO L93 Difference]: Finished difference Result 34383 states and 53582 transitions. [2022-01-11 00:29:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:41,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-11 00:29:41,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:41,109 INFO L225 Difference]: With dead ends: 34383 [2022-01-11 00:29:41,109 INFO L226 Difference]: Without dead ends: 21357 [2022-01-11 00:29:41,135 INFO L932 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 [2022-01-11 00:29:41,136 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 120 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:41,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 533 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21357 states. [2022-01-11 00:29:42,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21357 to 21355. [2022-01-11 00:29:42,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21355 states, 21354 states have (on average 1.536573943991758) internal successors, (32812), 21354 states have internal predecessors, (32812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:42,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21355 states to 21355 states and 32812 transitions. [2022-01-11 00:29:42,312 INFO L78 Accepts]: Start accepts. Automaton has 21355 states and 32812 transitions. Word has length 82 [2022-01-11 00:29:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:42,313 INFO L470 AbstractCegarLoop]: Abstraction has 21355 states and 32812 transitions. [2022-01-11 00:29:42,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 21355 states and 32812 transitions. [2022-01-11 00:29:42,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 00:29:42,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:42,315 INFO L514 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] [2022-01-11 00:29:42,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 00:29:42,315 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:42,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:42,316 INFO L85 PathProgramCache]: Analyzing trace with hash -675072808, now seen corresponding path program 1 times [2022-01-11 00:29:42,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:42,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594916051] [2022-01-11 00:29:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:42,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:42,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:42,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594916051] [2022-01-11 00:29:42,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594916051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:42,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:42,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:42,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390043689] [2022-01-11 00:29:42,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:42,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:42,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:42,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:42,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:42,394 INFO L87 Difference]: Start difference. First operand 21355 states and 32812 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:44,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:44,223 INFO L93 Difference]: Finished difference Result 54339 states and 83618 transitions. [2022-01-11 00:29:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:44,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-11 00:29:44,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:44,282 INFO L225 Difference]: With dead ends: 54339 [2022-01-11 00:29:44,282 INFO L226 Difference]: Without dead ends: 33617 [2022-01-11 00:29:44,297 INFO L932 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 [2022-01-11 00:29:44,298 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 123 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:44,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 558 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:44,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33617 states. [2022-01-11 00:29:46,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33617 to 33615. [2022-01-11 00:29:46,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33615 states, 33614 states have (on average 1.5169869697149998) internal successors, (50992), 33614 states have internal predecessors, (50992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33615 states to 33615 states and 50992 transitions. [2022-01-11 00:29:46,166 INFO L78 Accepts]: Start accepts. Automaton has 33615 states and 50992 transitions. Word has length 82 [2022-01-11 00:29:46,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:46,167 INFO L470 AbstractCegarLoop]: Abstraction has 33615 states and 50992 transitions. [2022-01-11 00:29:46,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:46,167 INFO L276 IsEmpty]: Start isEmpty. Operand 33615 states and 50992 transitions. [2022-01-11 00:29:46,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:29:46,170 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:46,170 INFO L514 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] [2022-01-11 00:29:46,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 00:29:46,170 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:46,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:46,170 INFO L85 PathProgramCache]: Analyzing trace with hash -903834258, now seen corresponding path program 1 times [2022-01-11 00:29:46,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:46,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817889158] [2022-01-11 00:29:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:46,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:46,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:46,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817889158] [2022-01-11 00:29:46,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817889158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:46,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:46,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:46,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456164124] [2022-01-11 00:29:46,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:46,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:46,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:46,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:46,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:46,294 INFO L87 Difference]: Start difference. First operand 33615 states and 50992 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:48,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:48,647 INFO L93 Difference]: Finished difference Result 60506 states and 91759 transitions. [2022-01-11 00:29:48,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:48,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-11 00:29:48,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:48,702 INFO L225 Difference]: With dead ends: 60506 [2022-01-11 00:29:48,702 INFO L226 Difference]: Without dead ends: 35544 [2022-01-11 00:29:48,723 INFO L932 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 [2022-01-11 00:29:48,724 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 472 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:48,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 381 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:48,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35544 states. [2022-01-11 00:29:50,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35544 to 33684. [2022-01-11 00:29:50,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33684 states, 33683 states have (on average 1.516195113261883) internal successors, (51070), 33683 states have internal predecessors, (51070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:50,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33684 states to 33684 states and 51070 transitions. [2022-01-11 00:29:50,934 INFO L78 Accepts]: Start accepts. Automaton has 33684 states and 51070 transitions. Word has length 83 [2022-01-11 00:29:50,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:50,935 INFO L470 AbstractCegarLoop]: Abstraction has 33684 states and 51070 transitions. [2022-01-11 00:29:50,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:50,935 INFO L276 IsEmpty]: Start isEmpty. Operand 33684 states and 51070 transitions. [2022-01-11 00:29:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:29:50,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:50,939 INFO L514 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] [2022-01-11 00:29:50,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 00:29:50,939 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:50,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:50,939 INFO L85 PathProgramCache]: Analyzing trace with hash 244349705, now seen corresponding path program 1 times [2022-01-11 00:29:50,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:50,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391859938] [2022-01-11 00:29:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:50,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:51,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:51,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391859938] [2022-01-11 00:29:51,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391859938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:51,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:51,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:51,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745050987] [2022-01-11 00:29:51,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:51,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:51,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:51,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:51,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:51,053 INFO L87 Difference]: Start difference. First operand 33684 states and 51070 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:53,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:53,831 INFO L93 Difference]: Finished difference Result 75896 states and 115520 transitions. [2022-01-11 00:29:53,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:53,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-11 00:29:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:53,910 INFO L225 Difference]: With dead ends: 75896 [2022-01-11 00:29:53,911 INFO L226 Difference]: Without dead ends: 47478 [2022-01-11 00:29:53,946 INFO L932 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 [2022-01-11 00:29:53,947 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 103 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:53,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 406 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:53,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47478 states. [2022-01-11 00:29:56,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47478 to 45988. [2022-01-11 00:29:56,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45988 states, 45987 states have (on average 1.504033748668102) internal successors, (69166), 45987 states have internal predecessors, (69166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45988 states to 45988 states and 69166 transitions. [2022-01-11 00:29:56,886 INFO L78 Accepts]: Start accepts. Automaton has 45988 states and 69166 transitions. Word has length 83 [2022-01-11 00:29:56,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:56,887 INFO L470 AbstractCegarLoop]: Abstraction has 45988 states and 69166 transitions. [2022-01-11 00:29:56,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:56,887 INFO L276 IsEmpty]: Start isEmpty. Operand 45988 states and 69166 transitions. [2022-01-11 00:29:56,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 00:29:56,890 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:56,890 INFO L514 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] [2022-01-11 00:29:56,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 00:29:56,891 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:56,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:56,891 INFO L85 PathProgramCache]: Analyzing trace with hash 504265995, now seen corresponding path program 1 times [2022-01-11 00:29:56,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:56,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577961220] [2022-01-11 00:29:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:56,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:56,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:56,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:56,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577961220] [2022-01-11 00:29:56,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577961220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:56,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:56,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:56,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492451817] [2022-01-11 00:29:56,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:56,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:56,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:56,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:56,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:56,945 INFO L87 Difference]: Start difference. First operand 45988 states and 69166 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:30:02,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:02,235 INFO L93 Difference]: Finished difference Result 137254 states and 206672 transitions. [2022-01-11 00:30:02,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:30:02,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-11 00:30:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:02,392 INFO L225 Difference]: With dead ends: 137254 [2022-01-11 00:30:02,392 INFO L226 Difference]: Without dead ends: 91757 [2022-01-11 00:30:02,423 INFO L932 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 [2022-01-11 00:30:02,423 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 172 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:02,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 566 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:30:02,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91757 states. [2022-01-11 00:30:05,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91757 to 46004. [2022-01-11 00:30:05,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46004 states, 46003 states have (on average 1.5038584440145208) internal successors, (69182), 46003 states have internal predecessors, (69182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:30:05,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46004 states to 46004 states and 69182 transitions. [2022-01-11 00:30:05,844 INFO L78 Accepts]: Start accepts. Automaton has 46004 states and 69182 transitions. Word has length 84 [2022-01-11 00:30:05,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:05,844 INFO L470 AbstractCegarLoop]: Abstraction has 46004 states and 69182 transitions. [2022-01-11 00:30:05,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:30:05,844 INFO L276 IsEmpty]: Start isEmpty. Operand 46004 states and 69182 transitions. [2022-01-11 00:30:05,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 00:30:05,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:05,850 INFO L514 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] [2022-01-11 00:30:05,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 00:30:05,850 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:05,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:05,851 INFO L85 PathProgramCache]: Analyzing trace with hash 929627703, now seen corresponding path program 1 times [2022-01-11 00:30:05,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:05,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176521889] [2022-01-11 00:30:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:05,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:05,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:30:05,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:05,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176521889] [2022-01-11 00:30:05,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176521889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:05,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:05,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:30:05,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864782884] [2022-01-11 00:30:05,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:05,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:30:05,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:05,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:30:05,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:30:05,948 INFO L87 Difference]: Start difference. First operand 46004 states and 69182 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:30:09,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:09,752 INFO L93 Difference]: Finished difference Result 88690 states and 134336 transitions. [2022-01-11 00:30:09,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:30:09,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-11 00:30:09,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:09,853 INFO L225 Difference]: With dead ends: 88690 [2022-01-11 00:30:09,853 INFO L226 Difference]: Without dead ends: 58744 [2022-01-11 00:30:09,876 INFO L932 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 [2022-01-11 00:30:09,877 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 98 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:09,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 442 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:30:09,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58744 states. [2022-01-11 00:30:13,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58744 to 58742. [2022-01-11 00:30:13,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58742 states, 58741 states have (on average 1.5038899576105276) internal successors, (88340), 58741 states have internal predecessors, (88340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:30:13,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58742 states to 58742 states and 88340 transitions. [2022-01-11 00:30:13,685 INFO L78 Accepts]: Start accepts. Automaton has 58742 states and 88340 transitions. Word has length 84 [2022-01-11 00:30:13,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:13,686 INFO L470 AbstractCegarLoop]: Abstraction has 58742 states and 88340 transitions. [2022-01-11 00:30:13,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:30:13,686 INFO L276 IsEmpty]: Start isEmpty. Operand 58742 states and 88340 transitions. [2022-01-11 00:30:13,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 00:30:13,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:13,688 INFO L514 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] [2022-01-11 00:30:13,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 00:30:13,688 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:13,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:13,689 INFO L85 PathProgramCache]: Analyzing trace with hash -322225901, now seen corresponding path program 1 times [2022-01-11 00:30:13,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:13,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707691471] [2022-01-11 00:30:13,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:13,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:13,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:30:13,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:13,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707691471] [2022-01-11 00:30:13,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707691471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:13,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:13,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:30:13,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337864811] [2022-01-11 00:30:13,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:13,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:30:13,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:13,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:30:13,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:30:13,806 INFO L87 Difference]: Start difference. First operand 58742 states and 88340 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)