/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_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:08:06,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:08:06,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:08:06,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:08:06,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:08:06,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:08:06,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:08:06,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:08:06,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:08:06,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:08:06,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:08:06,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:08:06,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:08:06,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:08:06,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:08:06,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:08:06,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:08:06,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:08:06,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:08:06,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:08:06,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:08:06,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:08:06,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:08:06,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:08:06,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 19:08:06,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 19:08:06,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 19:08:06,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 19:08:06,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 19:08:06,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 19:08:06,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 19:08:06,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 19:08:06,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 19:08:06,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 19:08:06,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 19:08:06,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 19:08:06,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 19:08:06,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 19:08:06,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:08:06,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:08:06,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:08:06,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:08:06,141 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:08:06,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:08:06,142 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:08:06,142 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:08:06,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:08:06,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:08:06,144 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:08:06,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:08:06,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:08:06,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:08:06,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:08:06,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:08:06,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:08:06,145 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:08:06,145 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:08:06,145 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:08:06,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:08:06,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:08:06,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:08:06,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:08:06,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:08:06,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:08:06,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:08:06,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:08:06,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:08:06,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:08:06,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:08:06,146 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:08:06,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:08:06,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:08:06,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:08:06,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:08:06,148 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:08:06,148 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:08:06,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:08:06,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:08:06,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:08:06,389 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:08:06,389 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:08:06,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-10 19:08:06,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98b4245d3/b008d2f806424d9cb9743b091933261f/FLAGcb9708706 [2022-01-10 19:08:06,835 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:08:06,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-10 19:08:06,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98b4245d3/b008d2f806424d9cb9743b091933261f/FLAGcb9708706 [2022-01-10 19:08:06,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98b4245d3/b008d2f806424d9cb9743b091933261f [2022-01-10 19:08:06,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:08:06,853 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:08:06,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:08:06,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:08:06,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:08:06,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:08:06" (1/1) ... [2022-01-10 19:08:06,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d3eb28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:06, skipping insertion in model container [2022-01-10 19:08:06,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:08:06" (1/1) ... [2022-01-10 19:08:06,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:08:06,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:08:07,074 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-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7804,7817] [2022-01-10 19:08:07,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:08:07,122 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:08:07,153 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-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7804,7817] [2022-01-10 19:08:07,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:08:07,205 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:08:07,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:07 WrapperNode [2022-01-10 19:08:07,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:08:07,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:08:07,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:08:07,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:08:07,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:07" (1/1) ... [2022-01-10 19:08:07,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:07" (1/1) ... [2022-01-10 19:08:07,274 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 615 [2022-01-10 19:08:07,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:08:07,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:08:07,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:08:07,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:08:07,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:07" (1/1) ... [2022-01-10 19:08:07,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:07" (1/1) ... [2022-01-10 19:08:07,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:07" (1/1) ... [2022-01-10 19:08:07,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:07" (1/1) ... [2022-01-10 19:08:07,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:07" (1/1) ... [2022-01-10 19:08:07,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:07" (1/1) ... [2022-01-10 19:08:07,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:07" (1/1) ... [2022-01-10 19:08:07,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:08:07,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:08:07,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:08:07,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:08:07,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:07" (1/1) ... [2022-01-10 19:08:07,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:08:07,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:08:07,359 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) [2022-01-10 19:08:07,365 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 [2022-01-10 19:08:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:08:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:08:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:08:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:08:07,496 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:08:07,497 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:08:07,965 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:08:07,974 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:08:07,974 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 19:08:07,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:08:07 BoogieIcfgContainer [2022-01-10 19:08:07,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:08:07,980 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:08:07,980 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:08:07,982 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:08:07,984 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:08:07" (1/1) ... [2022-01-10 19:08:08,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:08:08 BasicIcfg [2022-01-10 19:08:08,350 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:08:08,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:08:08,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:08:08,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:08:08,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:08:06" (1/4) ... [2022-01-10 19:08:08,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592d83a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:08:08, skipping insertion in model container [2022-01-10 19:08:08,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:07" (2/4) ... [2022-01-10 19:08:08,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592d83a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:08:08, skipping insertion in model container [2022-01-10 19:08:08,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:08:07" (3/4) ... [2022-01-10 19:08:08,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592d83a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:08:08, skipping insertion in model container [2022-01-10 19:08:08,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:08:08" (4/4) ... [2022-01-10 19:08:08,359 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 19:08:08,363 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:08:08,363 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 19:08:08,412 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:08:08,417 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 [2022-01-10 19:08:08,417 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 19:08:08,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 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) [2022-01-10 19:08:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 19:08:08,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:08,438 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] [2022-01-10 19:08:08,438 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:08,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:08,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1733086145, now seen corresponding path program 1 times [2022-01-10 19:08:08,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:08,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855280972] [2022-01-10 19:08:08,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:08,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:09,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:09,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:09,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855280972] [2022-01-10 19:08:09,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855280972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:09,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:09,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:09,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62172502] [2022-01-10 19:08:09,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:09,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:09,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:09,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:09,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:09,073 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 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 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-01-10 19:08:09,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:09,228 INFO L93 Difference]: Finished difference Result 323 states and 547 transitions. [2022-01-10 19:08:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:09,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-01-10 19:08:09,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:09,248 INFO L225 Difference]: With dead ends: 323 [2022-01-10 19:08:09,248 INFO L226 Difference]: Without dead ends: 225 [2022-01-10 19:08:09,250 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 [2022-01-10 19:08:09,252 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 150 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:09,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 448 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:08:09,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-01-10 19:08:09,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2022-01-10 19:08:09,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.572072072072072) internal successors, (349), 222 states have internal predecessors, (349), 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) [2022-01-10 19:08:09,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 349 transitions. [2022-01-10 19:08:09,312 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 349 transitions. Word has length 62 [2022-01-10 19:08:09,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:09,313 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 349 transitions. [2022-01-10 19:08:09,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-01-10 19:08:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 349 transitions. [2022-01-10 19:08:09,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 19:08:09,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:09,320 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] [2022-01-10 19:08:09,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:08:09,320 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:09,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:09,322 INFO L85 PathProgramCache]: Analyzing trace with hash -994188472, now seen corresponding path program 1 times [2022-01-10 19:08:09,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:09,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516297623] [2022-01-10 19:08:09,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:09,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:09,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:09,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:09,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516297623] [2022-01-10 19:08:09,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516297623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:09,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:09,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:09,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32729383] [2022-01-10 19:08:09,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:09,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:09,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:09,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:09,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:09,491 INFO L87 Difference]: Start difference. First operand 223 states and 349 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2022-01-10 19:08:09,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:09,569 INFO L93 Difference]: Finished difference Result 626 states and 974 transitions. [2022-01-10 19:08:09,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:09,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2022-01-10 19:08:09,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:09,573 INFO L225 Difference]: With dead ends: 626 [2022-01-10 19:08:09,573 INFO L226 Difference]: Without dead ends: 428 [2022-01-10 19:08:09,579 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 [2022-01-10 19:08:09,580 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 581 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 424 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 [2022-01-10 19:08:09,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 424 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:09,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-01-10 19:08:09,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2022-01-10 19:08:09,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 1.5576470588235294) internal successors, (662), 425 states have internal predecessors, (662), 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) [2022-01-10 19:08:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 662 transitions. [2022-01-10 19:08:09,671 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 662 transitions. Word has length 64 [2022-01-10 19:08:09,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:09,671 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 662 transitions. [2022-01-10 19:08:09,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2022-01-10 19:08:09,671 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 662 transitions. [2022-01-10 19:08:09,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 19:08:09,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:09,673 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] [2022-01-10 19:08:09,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:08:09,673 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:09,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:09,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2113512833, now seen corresponding path program 1 times [2022-01-10 19:08:09,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:09,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027251907] [2022-01-10 19:08:09,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:09,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:09,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:09,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027251907] [2022-01-10 19:08:09,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027251907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:09,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:09,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:09,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521896464] [2022-01-10 19:08:09,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:09,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:09,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:09,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:09,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:09,782 INFO L87 Difference]: Start difference. First operand 426 states and 662 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-01-10 19:08:09,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:09,825 INFO L93 Difference]: Finished difference Result 896 states and 1442 transitions. [2022-01-10 19:08:09,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:09,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-01-10 19:08:09,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:09,829 INFO L225 Difference]: With dead ends: 896 [2022-01-10 19:08:09,829 INFO L226 Difference]: Without dead ends: 578 [2022-01-10 19:08:09,832 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 [2022-01-10 19:08:09,836 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 137 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 522 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 [2022-01-10 19:08:09,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 522 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:09,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-01-10 19:08:09,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 566. [2022-01-10 19:08:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.5823008849557523) internal successors, (894), 565 states have internal predecessors, (894), 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) [2022-01-10 19:08:09,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 894 transitions. [2022-01-10 19:08:09,874 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 894 transitions. Word has length 65 [2022-01-10 19:08:09,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:09,875 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 894 transitions. [2022-01-10 19:08:09,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-01-10 19:08:09,876 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 894 transitions. [2022-01-10 19:08:09,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 19:08:09,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:09,878 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] [2022-01-10 19:08:09,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:08:09,878 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1392201104, now seen corresponding path program 1 times [2022-01-10 19:08:09,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:09,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253187933] [2022-01-10 19:08:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:09,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:10,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:10,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253187933] [2022-01-10 19:08:10,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253187933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:10,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:10,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:10,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513654610] [2022-01-10 19:08:10,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:10,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:10,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:10,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:10,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:10,008 INFO L87 Difference]: Start difference. First operand 566 states and 894 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-01-10 19:08:10,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:10,056 INFO L93 Difference]: Finished difference Result 1011 states and 1640 transitions. [2022-01-10 19:08:10,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:10,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-01-10 19:08:10,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:10,059 INFO L225 Difference]: With dead ends: 1011 [2022-01-10 19:08:10,059 INFO L226 Difference]: Without dead ends: 701 [2022-01-10 19:08:10,059 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 [2022-01-10 19:08:10,064 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 132 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 513 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 [2022-01-10 19:08:10,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 513 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:10,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-01-10 19:08:10,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 699. [2022-01-10 19:08:10,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.5974212034383954) internal successors, (1115), 698 states have internal predecessors, (1115), 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) [2022-01-10 19:08:10,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1115 transitions. [2022-01-10 19:08:10,121 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1115 transitions. Word has length 65 [2022-01-10 19:08:10,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:10,123 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 1115 transitions. [2022-01-10 19:08:10,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-01-10 19:08:10,124 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1115 transitions. [2022-01-10 19:08:10,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 19:08:10,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:10,124 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] [2022-01-10 19:08:10,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:08:10,125 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:10,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:10,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1142110404, now seen corresponding path program 1 times [2022-01-10 19:08:10,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:10,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982390403] [2022-01-10 19:08:10,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:10,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:10,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:10,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982390403] [2022-01-10 19:08:10,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982390403] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:10,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:10,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:10,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282353645] [2022-01-10 19:08:10,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:10,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:10,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:10,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:10,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:10,174 INFO L87 Difference]: Start difference. First operand 699 states and 1115 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-01-10 19:08:10,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:10,242 INFO L93 Difference]: Finished difference Result 2059 states and 3281 transitions. [2022-01-10 19:08:10,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:10,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-01-10 19:08:10,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:10,248 INFO L225 Difference]: With dead ends: 2059 [2022-01-10 19:08:10,249 INFO L226 Difference]: Without dead ends: 1388 [2022-01-10 19:08:10,250 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 [2022-01-10 19:08:10,250 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 213 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 649 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 [2022-01-10 19:08:10,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 649 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:10,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2022-01-10 19:08:10,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 701. [2022-01-10 19:08:10,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 1.5957142857142856) internal successors, (1117), 700 states have internal predecessors, (1117), 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) [2022-01-10 19:08:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1117 transitions. [2022-01-10 19:08:10,301 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1117 transitions. Word has length 65 [2022-01-10 19:08:10,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:10,302 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 1117 transitions. [2022-01-10 19:08:10,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-01-10 19:08:10,304 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1117 transitions. [2022-01-10 19:08:10,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:08:10,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:10,308 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] [2022-01-10 19:08:10,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:08:10,309 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:10,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:10,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2063279837, now seen corresponding path program 1 times [2022-01-10 19:08:10,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:10,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326936571] [2022-01-10 19:08:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:10,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:10,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:10,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:10,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326936571] [2022-01-10 19:08:10,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326936571] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:10,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:10,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:08:10,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301881175] [2022-01-10 19:08:10,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:10,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:08:10,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:10,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:08:10,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:08:10,448 INFO L87 Difference]: Start difference. First operand 701 states and 1117 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2022-01-10 19:08:10,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:10,616 INFO L93 Difference]: Finished difference Result 2651 states and 4216 transitions. [2022-01-10 19:08:10,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:08:10,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 [2022-01-10 19:08:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:10,622 INFO L225 Difference]: With dead ends: 2651 [2022-01-10 19:08:10,622 INFO L226 Difference]: Without dead ends: 1962 [2022-01-10 19:08:10,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:08:10,624 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 660 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:10,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 942 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:10,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2022-01-10 19:08:10,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1289. [2022-01-10 19:08:10,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1288 states have (on average 1.5776397515527951) internal successors, (2032), 1288 states have internal predecessors, (2032), 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) [2022-01-10 19:08:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 2032 transitions. [2022-01-10 19:08:10,702 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 2032 transitions. Word has length 66 [2022-01-10 19:08:10,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:10,702 INFO L470 AbstractCegarLoop]: Abstraction has 1289 states and 2032 transitions. [2022-01-10 19:08:10,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2022-01-10 19:08:10,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 2032 transitions. [2022-01-10 19:08:10,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:08:10,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:10,703 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] [2022-01-10 19:08:10,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:08:10,703 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:10,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:10,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1589021305, now seen corresponding path program 1 times [2022-01-10 19:08:10,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:10,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68181142] [2022-01-10 19:08:10,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:10,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:10,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:10,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68181142] [2022-01-10 19:08:10,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68181142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:10,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:10,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:10,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057423182] [2022-01-10 19:08:10,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:10,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:10,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:10,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:10,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:10,776 INFO L87 Difference]: Start difference. First operand 1289 states and 2032 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2022-01-10 19:08:10,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:10,845 INFO L93 Difference]: Finished difference Result 2306 states and 3633 transitions. [2022-01-10 19:08:10,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:10,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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 [2022-01-10 19:08:10,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:10,849 INFO L225 Difference]: With dead ends: 2306 [2022-01-10 19:08:10,849 INFO L226 Difference]: Without dead ends: 1033 [2022-01-10 19:08:10,850 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 [2022-01-10 19:08:10,851 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 69 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 707 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 [2022-01-10 19:08:10,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 707 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:10,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2022-01-10 19:08:10,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1033. [2022-01-10 19:08:10,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 1032 states have (on average 1.574612403100775) internal successors, (1625), 1032 states have internal predecessors, (1625), 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) [2022-01-10 19:08:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1625 transitions. [2022-01-10 19:08:10,911 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1625 transitions. Word has length 66 [2022-01-10 19:08:10,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:10,911 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1625 transitions. [2022-01-10 19:08:10,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2022-01-10 19:08:10,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1625 transitions. [2022-01-10 19:08:10,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 19:08:10,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:10,912 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] [2022-01-10 19:08:10,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:08:10,912 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:10,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:10,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1650526316, now seen corresponding path program 1 times [2022-01-10 19:08:10,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:10,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767597640] [2022-01-10 19:08:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:10,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:10,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:10,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767597640] [2022-01-10 19:08:10,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767597640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:10,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:10,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:10,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955812752] [2022-01-10 19:08:10,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:10,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:10,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:10,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:10,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:10,950 INFO L87 Difference]: Start difference. First operand 1033 states and 1625 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) [2022-01-10 19:08:11,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:11,042 INFO L93 Difference]: Finished difference Result 2048 states and 3213 transitions. [2022-01-10 19:08:11,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:11,042 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 [2022-01-10 19:08:11,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:11,046 INFO L225 Difference]: With dead ends: 2048 [2022-01-10 19:08:11,046 INFO L226 Difference]: Without dead ends: 1369 [2022-01-10 19:08:11,047 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 [2022-01-10 19:08:11,048 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 210 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 450 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 [2022-01-10 19:08:11,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 450 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:11,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-01-10 19:08:11,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1033. [2022-01-10 19:08:11,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 1032 states have (on average 1.573643410852713) internal successors, (1624), 1032 states have internal predecessors, (1624), 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) [2022-01-10 19:08:11,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1624 transitions. [2022-01-10 19:08:11,112 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1624 transitions. Word has length 69 [2022-01-10 19:08:11,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:11,113 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1624 transitions. [2022-01-10 19:08:11,113 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) [2022-01-10 19:08:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1624 transitions. [2022-01-10 19:08:11,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 19:08:11,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:11,114 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] [2022-01-10 19:08:11,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:08:11,114 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:11,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:11,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1373489108, now seen corresponding path program 1 times [2022-01-10 19:08:11,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:11,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657647069] [2022-01-10 19:08:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:11,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:11,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:11,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657647069] [2022-01-10 19:08:11,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657647069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:11,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:11,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:11,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58525029] [2022-01-10 19:08:11,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:11,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:11,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:11,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:11,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:11,234 INFO L87 Difference]: Start difference. First operand 1033 states and 1624 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2022-01-10 19:08:13,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:08:13,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:13,573 INFO L93 Difference]: Finished difference Result 2685 states and 4328 transitions. [2022-01-10 19:08:13,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:13,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 [2022-01-10 19:08:13,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:13,580 INFO L225 Difference]: With dead ends: 2685 [2022-01-10 19:08:13,580 INFO L226 Difference]: Without dead ends: 1813 [2022-01-10 19:08:13,581 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 [2022-01-10 19:08:13,581 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 121 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:13,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 420 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 19:08:13,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2022-01-10 19:08:13,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1811. [2022-01-10 19:08:13,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 1.5950276243093922) internal successors, (2887), 1810 states have internal predecessors, (2887), 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) [2022-01-10 19:08:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2887 transitions. [2022-01-10 19:08:13,715 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2887 transitions. Word has length 70 [2022-01-10 19:08:13,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:13,715 INFO L470 AbstractCegarLoop]: Abstraction has 1811 states and 2887 transitions. [2022-01-10 19:08:13,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2022-01-10 19:08:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2887 transitions. [2022-01-10 19:08:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 19:08:13,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:13,716 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] [2022-01-10 19:08:13,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:08:13,716 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:13,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1659559100, now seen corresponding path program 1 times [2022-01-10 19:08:13,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:13,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248015237] [2022-01-10 19:08:13,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:13,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:13,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:13,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248015237] [2022-01-10 19:08:13,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248015237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:13,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:13,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:13,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441442174] [2022-01-10 19:08:13,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:13,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:13,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:13,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:13,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:13,813 INFO L87 Difference]: Start difference. First operand 1811 states and 2887 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) [2022-01-10 19:08:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:14,093 INFO L93 Difference]: Finished difference Result 5059 states and 8137 transitions. [2022-01-10 19:08:14,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:14,094 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 [2022-01-10 19:08:14,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:14,103 INFO L225 Difference]: With dead ends: 5059 [2022-01-10 19:08:14,103 INFO L226 Difference]: Without dead ends: 3409 [2022-01-10 19:08:14,104 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 [2022-01-10 19:08:14,105 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 151 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 597 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 [2022-01-10 19:08:14,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 597 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:14,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2022-01-10 19:08:14,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 3407. [2022-01-10 19:08:14,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3407 states, 3406 states have (on average 1.5845566647093365) internal successors, (5397), 3406 states have internal predecessors, (5397), 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) [2022-01-10 19:08:14,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 5397 transitions. [2022-01-10 19:08:14,349 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 5397 transitions. Word has length 72 [2022-01-10 19:08:14,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:14,350 INFO L470 AbstractCegarLoop]: Abstraction has 3407 states and 5397 transitions. [2022-01-10 19:08:14,350 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) [2022-01-10 19:08:14,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 5397 transitions. [2022-01-10 19:08:14,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 19:08:14,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:14,351 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] [2022-01-10 19:08:14,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:08:14,352 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:14,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:14,352 INFO L85 PathProgramCache]: Analyzing trace with hash -853908261, now seen corresponding path program 1 times [2022-01-10 19:08:14,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:14,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640885294] [2022-01-10 19:08:14,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:14,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:14,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:14,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640885294] [2022-01-10 19:08:14,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640885294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:14,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:14,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:14,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828080879] [2022-01-10 19:08:14,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:14,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:14,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:14,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:14,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:14,418 INFO L87 Difference]: Start difference. First operand 3407 states and 5397 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2022-01-10 19:08:14,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:14,879 INFO L93 Difference]: Finished difference Result 9063 states and 14371 transitions. [2022-01-10 19:08:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:14,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 [2022-01-10 19:08:14,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:14,924 INFO L225 Difference]: With dead ends: 9063 [2022-01-10 19:08:14,924 INFO L226 Difference]: Without dead ends: 5736 [2022-01-10 19:08:14,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:14,930 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 406 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 544 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 [2022-01-10 19:08:14,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 544 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:14,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5736 states. [2022-01-10 19:08:15,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5736 to 3412. [2022-01-10 19:08:15,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3411 states have (on average 1.5828202873057755) internal successors, (5399), 3411 states have internal predecessors, (5399), 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) [2022-01-10 19:08:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5399 transitions. [2022-01-10 19:08:15,258 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5399 transitions. Word has length 72 [2022-01-10 19:08:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:15,258 INFO L470 AbstractCegarLoop]: Abstraction has 3412 states and 5399 transitions. [2022-01-10 19:08:15,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2022-01-10 19:08:15,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5399 transitions. [2022-01-10 19:08:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 19:08:15,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:15,260 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] [2022-01-10 19:08:15,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:08:15,260 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:15,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1840965122, now seen corresponding path program 1 times [2022-01-10 19:08:15,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:15,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053935287] [2022-01-10 19:08:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:15,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:15,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:15,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053935287] [2022-01-10 19:08:15,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053935287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:15,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:15,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:15,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878872416] [2022-01-10 19:08:15,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:15,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:15,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:15,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:15,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:15,348 INFO L87 Difference]: Start difference. First operand 3412 states and 5399 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2022-01-10 19:08:15,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:15,953 INFO L93 Difference]: Finished difference Result 9838 states and 15586 transitions. [2022-01-10 19:08:15,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:15,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 [2022-01-10 19:08:15,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:15,975 INFO L225 Difference]: With dead ends: 9838 [2022-01-10 19:08:15,975 INFO L226 Difference]: Without dead ends: 6494 [2022-01-10 19:08:15,980 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 [2022-01-10 19:08:15,981 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 531 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 425 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 [2022-01-10 19:08:15,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 425 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:15,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2022-01-10 19:08:16,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 6492. [2022-01-10 19:08:16,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6492 states, 6491 states have (on average 1.5754121090741027) internal successors, (10226), 6491 states have internal predecessors, (10226), 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) [2022-01-10 19:08:16,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6492 states to 6492 states and 10226 transitions. [2022-01-10 19:08:16,603 INFO L78 Accepts]: Start accepts. Automaton has 6492 states and 10226 transitions. Word has length 72 [2022-01-10 19:08:16,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:16,603 INFO L470 AbstractCegarLoop]: Abstraction has 6492 states and 10226 transitions. [2022-01-10 19:08:16,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2022-01-10 19:08:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 6492 states and 10226 transitions. [2022-01-10 19:08:16,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 19:08:16,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:16,605 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] [2022-01-10 19:08:16,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:08:16,606 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:16,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:16,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1922282855, now seen corresponding path program 1 times [2022-01-10 19:08:16,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:16,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274992380] [2022-01-10 19:08:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:16,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:16,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:16,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274992380] [2022-01-10 19:08:16,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274992380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:16,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:16,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:16,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743915494] [2022-01-10 19:08:16,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:16,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:16,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:16,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:16,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:16,662 INFO L87 Difference]: Start difference. First operand 6492 states and 10226 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) [2022-01-10 19:08:17,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:17,369 INFO L93 Difference]: Finished difference Result 12238 states and 19484 transitions. [2022-01-10 19:08:17,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:17,370 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 [2022-01-10 19:08:17,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:17,386 INFO L225 Difference]: With dead ends: 12238 [2022-01-10 19:08:17,386 INFO L226 Difference]: Without dead ends: 9026 [2022-01-10 19:08:17,391 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 [2022-01-10 19:08:17,391 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 122 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 494 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 [2022-01-10 19:08:17,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 494 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:17,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9026 states. [2022-01-10 19:08:18,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9026 to 9024. [2022-01-10 19:08:18,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9024 states, 9023 states have (on average 1.577967416602017) internal successors, (14238), 9023 states have internal predecessors, (14238), 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) [2022-01-10 19:08:18,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9024 states to 9024 states and 14238 transitions. [2022-01-10 19:08:18,246 INFO L78 Accepts]: Start accepts. Automaton has 9024 states and 14238 transitions. Word has length 73 [2022-01-10 19:08:18,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:18,246 INFO L470 AbstractCegarLoop]: Abstraction has 9024 states and 14238 transitions. [2022-01-10 19:08:18,246 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) [2022-01-10 19:08:18,246 INFO L276 IsEmpty]: Start isEmpty. Operand 9024 states and 14238 transitions. [2022-01-10 19:08:18,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 19:08:18,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:18,248 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] [2022-01-10 19:08:18,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 19:08:18,248 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:18,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:18,249 INFO L85 PathProgramCache]: Analyzing trace with hash -224337655, now seen corresponding path program 1 times [2022-01-10 19:08:18,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:18,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724182033] [2022-01-10 19:08:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:18,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:18,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:18,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724182033] [2022-01-10 19:08:18,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724182033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:18,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:18,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:18,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918945381] [2022-01-10 19:08:18,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:18,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:18,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:18,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:18,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:18,304 INFO L87 Difference]: Start difference. First operand 9024 states and 14238 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) [2022-01-10 19:08:19,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:19,210 INFO L93 Difference]: Finished difference Result 17748 states and 28216 transitions. [2022-01-10 19:08:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:19,210 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 [2022-01-10 19:08:19,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:19,229 INFO L225 Difference]: With dead ends: 17748 [2022-01-10 19:08:19,229 INFO L226 Difference]: Without dead ends: 11257 [2022-01-10 19:08:19,235 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 [2022-01-10 19:08:19,236 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 127 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 419 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 [2022-01-10 19:08:19,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 419 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:19,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11257 states. [2022-01-10 19:08:20,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11257 to 11031. [2022-01-10 19:08:20,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11031 states, 11030 states have (on average 1.5756119673617408) internal successors, (17379), 11030 states have internal predecessors, (17379), 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) [2022-01-10 19:08:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11031 states to 11031 states and 17379 transitions. [2022-01-10 19:08:20,368 INFO L78 Accepts]: Start accepts. Automaton has 11031 states and 17379 transitions. Word has length 73 [2022-01-10 19:08:20,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:20,368 INFO L470 AbstractCegarLoop]: Abstraction has 11031 states and 17379 transitions. [2022-01-10 19:08:20,368 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) [2022-01-10 19:08:20,369 INFO L276 IsEmpty]: Start isEmpty. Operand 11031 states and 17379 transitions. [2022-01-10 19:08:20,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 19:08:20,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:20,370 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] [2022-01-10 19:08:20,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 19:08:20,370 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:20,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:20,371 INFO L85 PathProgramCache]: Analyzing trace with hash -183612262, now seen corresponding path program 1 times [2022-01-10 19:08:20,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:20,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051576084] [2022-01-10 19:08:20,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:20,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:20,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:20,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051576084] [2022-01-10 19:08:20,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051576084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:20,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:20,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:20,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507329969] [2022-01-10 19:08:20,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:20,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:20,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:20,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:20,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:20,420 INFO L87 Difference]: Start difference. First operand 11031 states and 17379 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2022-01-10 19:08:21,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:21,233 INFO L93 Difference]: Finished difference Result 16588 states and 26159 transitions. [2022-01-10 19:08:21,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:21,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 74 [2022-01-10 19:08:21,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:21,249 INFO L225 Difference]: With dead ends: 16588 [2022-01-10 19:08:21,249 INFO L226 Difference]: Without dead ends: 9379 [2022-01-10 19:08:21,256 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 [2022-01-10 19:08:21,257 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 47 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 688 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 [2022-01-10 19:08:21,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 688 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9379 states. [2022-01-10 19:08:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9379 to 9379. [2022-01-10 19:08:21,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9379 states, 9378 states have (on average 1.572510130091704) internal successors, (14747), 9378 states have internal predecessors, (14747), 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) [2022-01-10 19:08:21,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9379 states to 9379 states and 14747 transitions. [2022-01-10 19:08:21,999 INFO L78 Accepts]: Start accepts. Automaton has 9379 states and 14747 transitions. Word has length 74 [2022-01-10 19:08:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:22,000 INFO L470 AbstractCegarLoop]: Abstraction has 9379 states and 14747 transitions. [2022-01-10 19:08:22,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2022-01-10 19:08:22,000 INFO L276 IsEmpty]: Start isEmpty. Operand 9379 states and 14747 transitions. [2022-01-10 19:08:22,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 19:08:22,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:22,002 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] [2022-01-10 19:08:22,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 19:08:22,002 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:22,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:22,003 INFO L85 PathProgramCache]: Analyzing trace with hash -781213159, now seen corresponding path program 1 times [2022-01-10 19:08:22,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:22,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471458423] [2022-01-10 19:08:22,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:22,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:22,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:22,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471458423] [2022-01-10 19:08:22,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471458423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:22,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:22,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:08:22,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975093449] [2022-01-10 19:08:22,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:22,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:08:22,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:22,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:08:22,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:08:22,106 INFO L87 Difference]: Start difference. First operand 9379 states and 14747 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2022-01-10 19:08:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:23,549 INFO L93 Difference]: Finished difference Result 24820 states and 38949 transitions. [2022-01-10 19:08:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:08:23,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2022-01-10 19:08:23,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:23,571 INFO L225 Difference]: With dead ends: 24820 [2022-01-10 19:08:23,572 INFO L226 Difference]: Without dead ends: 15485 [2022-01-10 19:08:23,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:08:23,582 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 784 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:23,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [784 Valid, 730 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:23,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15485 states. [2022-01-10 19:08:24,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15485 to 9535. [2022-01-10 19:08:24,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9535 states, 9534 states have (on average 1.565345080763583) internal successors, (14924), 9534 states have internal predecessors, (14924), 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) [2022-01-10 19:08:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9535 states to 9535 states and 14924 transitions. [2022-01-10 19:08:24,568 INFO L78 Accepts]: Start accepts. Automaton has 9535 states and 14924 transitions. Word has length 74 [2022-01-10 19:08:24,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:24,568 INFO L470 AbstractCegarLoop]: Abstraction has 9535 states and 14924 transitions. [2022-01-10 19:08:24,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2022-01-10 19:08:24,568 INFO L276 IsEmpty]: Start isEmpty. Operand 9535 states and 14924 transitions. [2022-01-10 19:08:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 19:08:24,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:24,571 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] [2022-01-10 19:08:24,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 19:08:24,571 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:24,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:24,571 INFO L85 PathProgramCache]: Analyzing trace with hash -285297283, now seen corresponding path program 1 times [2022-01-10 19:08:24,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:24,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154062316] [2022-01-10 19:08:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:24,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:24,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:24,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154062316] [2022-01-10 19:08:24,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154062316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:24,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:24,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:24,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682616387] [2022-01-10 19:08:24,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:24,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:24,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:24,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:24,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:24,631 INFO L87 Difference]: Start difference. First operand 9535 states and 14924 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2022-01-10 19:08:25,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:25,359 INFO L93 Difference]: Finished difference Result 17581 states and 27497 transitions. [2022-01-10 19:08:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:25,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 74 [2022-01-10 19:08:25,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:25,370 INFO L225 Difference]: With dead ends: 17581 [2022-01-10 19:08:25,371 INFO L226 Difference]: Without dead ends: 8082 [2022-01-10 19:08:25,379 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 [2022-01-10 19:08:25,379 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 47 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 683 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 [2022-01-10 19:08:25,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 683 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:25,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8082 states. [2022-01-10 19:08:26,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8082 to 8082. [2022-01-10 19:08:26,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8082 states, 8081 states have (on average 1.5619354040341542) internal successors, (12622), 8081 states have internal predecessors, (12622), 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) [2022-01-10 19:08:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8082 states to 8082 states and 12622 transitions. [2022-01-10 19:08:26,025 INFO L78 Accepts]: Start accepts. Automaton has 8082 states and 12622 transitions. Word has length 74 [2022-01-10 19:08:26,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:26,025 INFO L470 AbstractCegarLoop]: Abstraction has 8082 states and 12622 transitions. [2022-01-10 19:08:26,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2022-01-10 19:08:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 8082 states and 12622 transitions. [2022-01-10 19:08:26,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:08:26,027 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:26,027 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] [2022-01-10 19:08:26,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 19:08:26,027 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:26,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:26,028 INFO L85 PathProgramCache]: Analyzing trace with hash -947000846, now seen corresponding path program 1 times [2022-01-10 19:08:26,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:26,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573669278] [2022-01-10 19:08:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:26,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:26,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:26,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:26,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573669278] [2022-01-10 19:08:26,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573669278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:26,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:26,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:26,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809918744] [2022-01-10 19:08:26,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:26,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:26,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:26,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:26,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:26,079 INFO L87 Difference]: Start difference. First operand 8082 states and 12622 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2022-01-10 19:08:27,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:27,012 INFO L93 Difference]: Finished difference Result 16154 states and 25222 transitions. [2022-01-10 19:08:27,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:27,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 [2022-01-10 19:08:27,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:27,031 INFO L225 Difference]: With dead ends: 16154 [2022-01-10 19:08:27,032 INFO L226 Difference]: Without dead ends: 11176 [2022-01-10 19:08:27,041 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 [2022-01-10 19:08:27,043 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 196 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 536 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 [2022-01-10 19:08:27,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 536 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:27,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11176 states. [2022-01-10 19:08:27,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11176 to 8082. [2022-01-10 19:08:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8082 states, 8081 states have (on average 1.5615641628511323) internal successors, (12619), 8081 states have internal predecessors, (12619), 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) [2022-01-10 19:08:27,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8082 states to 8082 states and 12619 transitions. [2022-01-10 19:08:27,777 INFO L78 Accepts]: Start accepts. Automaton has 8082 states and 12619 transitions. Word has length 77 [2022-01-10 19:08:27,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:27,778 INFO L470 AbstractCegarLoop]: Abstraction has 8082 states and 12619 transitions. [2022-01-10 19:08:27,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2022-01-10 19:08:27,778 INFO L276 IsEmpty]: Start isEmpty. Operand 8082 states and 12619 transitions. [2022-01-10 19:08:27,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 19:08:27,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:27,780 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] [2022-01-10 19:08:27,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 19:08:27,780 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:27,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:27,780 INFO L85 PathProgramCache]: Analyzing trace with hash 671320266, now seen corresponding path program 1 times [2022-01-10 19:08:27,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:27,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493035390] [2022-01-10 19:08:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:27,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:27,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:27,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:27,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493035390] [2022-01-10 19:08:27,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493035390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:27,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:27,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:27,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241178606] [2022-01-10 19:08:27,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:27,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:27,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:27,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:27,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:27,957 INFO L87 Difference]: Start difference. First operand 8082 states and 12619 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2022-01-10 19:08:30,016 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 [] [2022-01-10 19:08:31,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:31,595 INFO L93 Difference]: Finished difference Result 22326 states and 35277 transitions. [2022-01-10 19:08:31,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:31,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2022-01-10 19:08:31,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:31,617 INFO L225 Difference]: With dead ends: 22326 [2022-01-10 19:08:31,617 INFO L226 Difference]: Without dead ends: 14724 [2022-01-10 19:08:31,625 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 [2022-01-10 19:08:31,625 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 111 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:31,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 402 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 19:08:31,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14724 states. [2022-01-10 19:08:33,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14724 to 14722. [2022-01-10 19:08:33,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14722 states, 14721 states have (on average 1.5680320630391957) internal successors, (23083), 14721 states have internal predecessors, (23083), 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) [2022-01-10 19:08:33,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14722 states to 14722 states and 23083 transitions. [2022-01-10 19:08:33,262 INFO L78 Accepts]: Start accepts. Automaton has 14722 states and 23083 transitions. Word has length 78 [2022-01-10 19:08:33,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:33,262 INFO L470 AbstractCegarLoop]: Abstraction has 14722 states and 23083 transitions. [2022-01-10 19:08:33,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2022-01-10 19:08:33,262 INFO L276 IsEmpty]: Start isEmpty. Operand 14722 states and 23083 transitions. [2022-01-10 19:08:33,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 19:08:33,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:33,264 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] [2022-01-10 19:08:33,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 19:08:33,264 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:33,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:33,264 INFO L85 PathProgramCache]: Analyzing trace with hash -433940494, now seen corresponding path program 1 times [2022-01-10 19:08:33,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:33,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903951556] [2022-01-10 19:08:33,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:33,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:33,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:33,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903951556] [2022-01-10 19:08:33,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903951556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:33,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:33,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:33,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606640610] [2022-01-10 19:08:33,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:33,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:33,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:33,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:33,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:33,331 INFO L87 Difference]: Start difference. First operand 14722 states and 23083 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) [2022-01-10 19:08:35,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:35,818 INFO L93 Difference]: Finished difference Result 37294 states and 58638 transitions. [2022-01-10 19:08:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:35,819 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 [2022-01-10 19:08:35,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:35,857 INFO L225 Difference]: With dead ends: 37294 [2022-01-10 19:08:35,857 INFO L226 Difference]: Without dead ends: 23052 [2022-01-10 19:08:35,875 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 [2022-01-10 19:08:35,876 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 134 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 565 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 [2022-01-10 19:08:35,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 565 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:35,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23052 states. [2022-01-10 19:08:38,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23052 to 23050. [2022-01-10 19:08:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23050 states, 23049 states have (on average 1.5526920907631567) internal successors, (35788), 23049 states have internal predecessors, (35788), 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) [2022-01-10 19:08:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23050 states to 23050 states and 35788 transitions. [2022-01-10 19:08:38,524 INFO L78 Accepts]: Start accepts. Automaton has 23050 states and 35788 transitions. Word has length 80 [2022-01-10 19:08:38,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:38,524 INFO L470 AbstractCegarLoop]: Abstraction has 23050 states and 35788 transitions. [2022-01-10 19:08:38,524 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) [2022-01-10 19:08:38,524 INFO L276 IsEmpty]: Start isEmpty. Operand 23050 states and 35788 transitions. [2022-01-10 19:08:38,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 19:08:38,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:38,526 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] [2022-01-10 19:08:38,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 19:08:38,526 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:38,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:38,527 INFO L85 PathProgramCache]: Analyzing trace with hash -881664654, now seen corresponding path program 1 times [2022-01-10 19:08:38,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:38,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220032977] [2022-01-10 19:08:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:38,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:38,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:38,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220032977] [2022-01-10 19:08:38,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220032977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:38,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:38,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:38,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872551574] [2022-01-10 19:08:38,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:38,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:38,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:38,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:38,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:38,593 INFO L87 Difference]: Start difference. First operand 23050 states and 35788 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) [2022-01-10 19:08:42,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:42,687 INFO L93 Difference]: Finished difference Result 58342 states and 90734 transitions. [2022-01-10 19:08:42,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:42,688 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 [2022-01-10 19:08:42,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:42,754 INFO L225 Difference]: With dead ends: 58342 [2022-01-10 19:08:42,754 INFO L226 Difference]: Without dead ends: 35924 [2022-01-10 19:08:42,778 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 [2022-01-10 19:08:42,779 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 137 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 589 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 [2022-01-10 19:08:42,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 589 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:42,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35924 states. [2022-01-10 19:08:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35924 to 35922. [2022-01-10 19:08:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35922 states, 35921 states have (on average 1.535257927117842) internal successors, (55148), 35921 states have internal predecessors, (55148), 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) [2022-01-10 19:08:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35922 states to 35922 states and 55148 transitions. [2022-01-10 19:08:47,097 INFO L78 Accepts]: Start accepts. Automaton has 35922 states and 55148 transitions. Word has length 80 [2022-01-10 19:08:47,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:47,097 INFO L470 AbstractCegarLoop]: Abstraction has 35922 states and 55148 transitions. [2022-01-10 19:08:47,097 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) [2022-01-10 19:08:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 35922 states and 55148 transitions. [2022-01-10 19:08:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 19:08:47,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:47,100 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] [2022-01-10 19:08:47,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 19:08:47,100 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:47,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:47,100 INFO L85 PathProgramCache]: Analyzing trace with hash 294258291, now seen corresponding path program 1 times [2022-01-10 19:08:47,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:47,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587089516] [2022-01-10 19:08:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:47,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:47,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:47,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587089516] [2022-01-10 19:08:47,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587089516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:47,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:47,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:47,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454802948] [2022-01-10 19:08:47,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:47,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:47,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:47,158 INFO L87 Difference]: Start difference. First operand 35922 states and 55148 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-01-10 19:08:52,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:52,809 INFO L93 Difference]: Finished difference Result 80566 states and 124110 transitions. [2022-01-10 19:08:52,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:52,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2022-01-10 19:08:52,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:52,910 INFO L225 Difference]: With dead ends: 80566 [2022-01-10 19:08:52,910 INFO L226 Difference]: Without dead ends: 49972 [2022-01-10 19:08:52,942 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 [2022-01-10 19:08:52,942 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 117 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 434 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 [2022-01-10 19:08:52,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 434 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:52,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49972 states. [2022-01-10 19:08:58,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49972 to 48482. [2022-01-10 19:08:58,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48482 states, 48481 states have (on average 1.5246385181823807) internal successors, (73916), 48481 states have internal predecessors, (73916), 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) [2022-01-10 19:08:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48482 states to 48482 states and 73916 transitions. [2022-01-10 19:08:59,047 INFO L78 Accepts]: Start accepts. Automaton has 48482 states and 73916 transitions. Word has length 81 [2022-01-10 19:08:59,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:59,047 INFO L470 AbstractCegarLoop]: Abstraction has 48482 states and 73916 transitions. [2022-01-10 19:08:59,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-01-10 19:08:59,048 INFO L276 IsEmpty]: Start isEmpty. Operand 48482 states and 73916 transitions. [2022-01-10 19:08:59,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 19:08:59,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:59,050 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] [2022-01-10 19:08:59,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 19:08:59,050 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:59,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:59,050 INFO L85 PathProgramCache]: Analyzing trace with hash 834293096, now seen corresponding path program 1 times [2022-01-10 19:08:59,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:59,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754056315] [2022-01-10 19:08:59,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:59,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:59,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:59,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754056315] [2022-01-10 19:08:59,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754056315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:59,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:59,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:59,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125517387] [2022-01-10 19:08:59,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:59,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:59,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:59,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:59,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:59,131 INFO L87 Difference]: Start difference. First operand 48482 states and 73916 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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) [2022-01-10 19:09:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:09:05,288 INFO L93 Difference]: Finished difference Result 98635 states and 150292 transitions. [2022-01-10 19:09:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:09:05,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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 [2022-01-10 19:09:05,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:09:05,373 INFO L225 Difference]: With dead ends: 98635 [2022-01-10 19:09:05,373 INFO L226 Difference]: Without dead ends: 50312 [2022-01-10 19:09:05,413 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 [2022-01-10 19:09:05,414 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 492 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:09:05,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 411 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:09:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50312 states. [2022-01-10 19:09:11,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50312 to 48552. [2022-01-10 19:09:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48552 states, 48551 states have (on average 1.5238203126609133) internal successors, (73983), 48551 states have internal predecessors, (73983), 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) [2022-01-10 19:09:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48552 states to 48552 states and 73983 transitions. [2022-01-10 19:09:11,763 INFO L78 Accepts]: Start accepts. Automaton has 48552 states and 73983 transitions. Word has length 82 [2022-01-10 19:09:11,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:09:11,763 INFO L470 AbstractCegarLoop]: Abstraction has 48552 states and 73983 transitions. [2022-01-10 19:09:11,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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) [2022-01-10 19:09:11,763 INFO L276 IsEmpty]: Start isEmpty. Operand 48552 states and 73983 transitions. [2022-01-10 19:09:11,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 19:09:11,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:09:11,766 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] [2022-01-10 19:09:11,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 19:09:11,766 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:09:11,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:09:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash 36381986, now seen corresponding path program 1 times [2022-01-10 19:09:11,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:09:11,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355117326] [2022-01-10 19:09:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:09:11,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:09:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:09:11,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:09:11,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:09:11,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355117326] [2022-01-10 19:09:11,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355117326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:09:11,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:09:11,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:09:11,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311682107] [2022-01-10 19:09:11,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:09:11,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:09:11,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:09:11,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:09:11,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:09:11,830 INFO L87 Difference]: Start difference. First operand 48552 states and 73983 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) [2022-01-10 19:09:14,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []