/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:43:53,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:43:53,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:43:53,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 01:43:53,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 01:43:53,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 01:43:53,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 01:43:53,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 01:43:53,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 01:43:53,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 01:43:53,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 01:43:53,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 01:43:53,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:43:53,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:43:53,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:43:53,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:43:53,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:43:53,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:43:53,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:43:53,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:43:53,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:43:53,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:43:53,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:43:53,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:43:53,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 01:43:53,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 01:43:53,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 01:43:53,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 01:43:53,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 01:43:53,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 01:43:53,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 01:43:53,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 01:43:53,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 01:43:53,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 01:43:53,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 01:43:53,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 01:43:53,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 01:43:53,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 01:43:53,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:43:53,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:43:53,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:43:53,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:43:53,438 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:43:53,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:43:53,439 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:43:53,439 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:43:53,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:43:53,440 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:43:53,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:43:53,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:43:53,440 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:43:53,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:43:53,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:43:53,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:43:53,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:43:53,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:43:53,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:43:53,441 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:43:53,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:43:53,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:43:53,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:43:53,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:43:53,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:43:53,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:43:53,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:43:53,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:43:53,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:43:53,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:43:53,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:43:53,442 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:43:53,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:43:53,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:43:53,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:43:53,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:43:53,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:43:53,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:43:53,670 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:43:53,670 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:43:53,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 01:43:53,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b69b85a/73c4fe554951465aab6920cbfd9bab85/FLAG31420a4c5 [2022-01-10 01:43:54,104 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:43:54,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 01:43:54,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b69b85a/73c4fe554951465aab6920cbfd9bab85/FLAG31420a4c5 [2022-01-10 01:43:54,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b69b85a/73c4fe554951465aab6920cbfd9bab85 [2022-01-10 01:43:54,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:43:54,475 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:43:54,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:43:54,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:43:54,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:43:54,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:43:54" (1/1) ... [2022-01-10 01:43:54,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@173c8739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:54, skipping insertion in model container [2022-01-10 01:43:54,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:43:54" (1/1) ... [2022-01-10 01:43:54,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:43:54,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:43:54,768 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15613,15626] [2022-01-10 01:43:54,783 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16673,16686] [2022-01-10 01:43:54,844 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[28981,28994] [2022-01-10 01:43:54,849 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[29628,29641] [2022-01-10 01:43:54,856 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[30969,30982] [2022-01-10 01:43:54,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:43:54,885 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:43:54,940 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15613,15626] [2022-01-10 01:43:54,946 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16673,16686] [2022-01-10 01:43:54,993 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[28981,28994] [2022-01-10 01:43:54,997 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[29628,29641] [2022-01-10 01:43:55,003 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[30969,30982] [2022-01-10 01:43:55,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:43:55,040 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:43:55,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:55 WrapperNode [2022-01-10 01:43:55,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:43:55,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:43:55,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:43:55,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:43:55,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:55" (1/1) ... [2022-01-10 01:43:55,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:55" (1/1) ... [2022-01-10 01:43:55,127 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1689 [2022-01-10 01:43:55,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:43:55,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:43:55,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:43:55,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:43:55,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:55" (1/1) ... [2022-01-10 01:43:55,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:55" (1/1) ... [2022-01-10 01:43:55,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:55" (1/1) ... [2022-01-10 01:43:55,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:55" (1/1) ... [2022-01-10 01:43:55,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:55" (1/1) ... [2022-01-10 01:43:55,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:55" (1/1) ... [2022-01-10 01:43:55,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:55" (1/1) ... [2022-01-10 01:43:55,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:43:55,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:43:55,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:43:55,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:43:55,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:55" (1/1) ... [2022-01-10 01:43:55,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:43:55,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:43:55,244 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 01:43:55,268 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 01:43:55,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:43:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:43:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:43:55,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:43:55,434 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:43:55,436 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:43:56,300 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:43:56,308 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:43:56,308 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 01:43:56,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:43:56 BoogieIcfgContainer [2022-01-10 01:43:56,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:43:56,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:43:56,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:43:56,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:43:56,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:43:54" (1/3) ... [2022-01-10 01:43:56,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eedb4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:43:56, skipping insertion in model container [2022-01-10 01:43:56,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:55" (2/3) ... [2022-01-10 01:43:56,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eedb4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:43:56, skipping insertion in model container [2022-01-10 01:43:56,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:43:56" (3/3) ... [2022-01-10 01:43:56,315 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 01:43:56,318 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:43:56,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 01:43:56,349 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:43:56,354 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 01:43:56,354 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 01:43:56,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 413 states, 407 states have (on average 1.805896805896806) internal successors, (735), 412 states have internal predecessors, (735), 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 01:43:56,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-10 01:43:56,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:56,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:56,383 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:43:56,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:56,387 INFO L85 PathProgramCache]: Analyzing trace with hash -969410714, now seen corresponding path program 1 times [2022-01-10 01:43:56,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:56,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640629356] [2022-01-10 01:43:56,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:56,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:56,806 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 01:43:56,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:56,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640629356] [2022-01-10 01:43:56,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640629356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:56,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:56,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:43:56,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539982848] [2022-01-10 01:43:56,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:56,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:43:56,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:56,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:43:56,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:43:56,836 INFO L87 Difference]: Start difference. First operand has 413 states, 407 states have (on average 1.805896805896806) internal successors, (735), 412 states have internal predecessors, (735), 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 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 01:43:56,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:56,977 INFO L93 Difference]: Finished difference Result 742 states and 1300 transitions. [2022-01-10 01:43:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:43:56,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 148 [2022-01-10 01:43:56,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:56,997 INFO L225 Difference]: With dead ends: 742 [2022-01-10 01:43:56,997 INFO L226 Difference]: Without dead ends: 595 [2022-01-10 01:43:57,002 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 01:43:57,005 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 461 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:57,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1147 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-01-10 01:43:57,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 593. [2022-01-10 01:43:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 588 states have (on average 1.4829931972789117) internal successors, (872), 592 states have internal predecessors, (872), 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 01:43:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 872 transitions. [2022-01-10 01:43:57,084 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 872 transitions. Word has length 148 [2022-01-10 01:43:57,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:57,087 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 872 transitions. [2022-01-10 01:43:57,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 01:43:57,088 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 872 transitions. [2022-01-10 01:43:57,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-10 01:43:57,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:57,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:57,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:43:57,098 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:43:57,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:57,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1257328890, now seen corresponding path program 1 times [2022-01-10 01:43:57,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:57,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792007682] [2022-01-10 01:43:57,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:57,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:57,346 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 01:43:57,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:57,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792007682] [2022-01-10 01:43:57,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792007682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:57,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:57,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:43:57,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124369643] [2022-01-10 01:43:57,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:57,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:43:57,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:57,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:43:57,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:43:57,354 INFO L87 Difference]: Start difference. First operand 593 states and 872 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 01:43:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:57,475 INFO L93 Difference]: Finished difference Result 1733 states and 2539 transitions. [2022-01-10 01:43:57,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:43:57,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 148 [2022-01-10 01:43:57,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:57,479 INFO L225 Difference]: With dead ends: 1733 [2022-01-10 01:43:57,479 INFO L226 Difference]: Without dead ends: 1149 [2022-01-10 01:43:57,482 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 01:43:57,483 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 1262 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:57,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1262 Valid, 1492 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:57,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2022-01-10 01:43:57,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1123. [2022-01-10 01:43:57,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1118 states have (on average 1.4695885509838997) internal successors, (1643), 1122 states have internal predecessors, (1643), 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 01:43:57,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1643 transitions. [2022-01-10 01:43:57,539 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1643 transitions. Word has length 148 [2022-01-10 01:43:57,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:57,539 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1643 transitions. [2022-01-10 01:43:57,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 01:43:57,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1643 transitions. [2022-01-10 01:43:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 01:43:57,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:57,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:57,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:43:57,543 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:43:57,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:57,546 INFO L85 PathProgramCache]: Analyzing trace with hash 56469786, now seen corresponding path program 1 times [2022-01-10 01:43:57,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:57,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492147576] [2022-01-10 01:43:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:57,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:57,591 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 01:43:57,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:57,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492147576] [2022-01-10 01:43:57,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492147576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:57,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:57,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:43:57,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783692577] [2022-01-10 01:43:57,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:57,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:43:57,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:57,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:43:57,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:43:57,596 INFO L87 Difference]: Start difference. First operand 1123 states and 1643 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 01:43:57,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:57,677 INFO L93 Difference]: Finished difference Result 3331 states and 4867 transitions. [2022-01-10 01:43:57,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:43:57,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 149 [2022-01-10 01:43:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:57,684 INFO L225 Difference]: With dead ends: 3331 [2022-01-10 01:43:57,684 INFO L226 Difference]: Without dead ends: 2236 [2022-01-10 01:43:57,686 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 01:43:57,687 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 580 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1369 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 01:43:57,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 1369 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:57,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2022-01-10 01:43:57,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1125. [2022-01-10 01:43:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1120 states have (on average 1.46875) internal successors, (1645), 1124 states have internal predecessors, (1645), 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 01:43:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1645 transitions. [2022-01-10 01:43:57,739 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1645 transitions. Word has length 149 [2022-01-10 01:43:57,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:57,740 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 1645 transitions. [2022-01-10 01:43:57,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 01:43:57,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1645 transitions. [2022-01-10 01:43:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 01:43:57,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:57,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:57,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:43:57,742 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:43:57,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:57,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1493517127, now seen corresponding path program 1 times [2022-01-10 01:43:57,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:57,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485566158] [2022-01-10 01:43:57,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:57,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:57,861 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 01:43:57,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:57,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485566158] [2022-01-10 01:43:57,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485566158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:57,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:57,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:43:57,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304131447] [2022-01-10 01:43:57,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:57,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:43:57,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:57,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:43:57,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:43:57,863 INFO L87 Difference]: Start difference. First operand 1125 states and 1645 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 01:43:58,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:58,029 INFO L93 Difference]: Finished difference Result 3257 states and 4739 transitions. [2022-01-10 01:43:58,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:43:58,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 150 [2022-01-10 01:43:58,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:58,037 INFO L225 Difference]: With dead ends: 3257 [2022-01-10 01:43:58,037 INFO L226 Difference]: Without dead ends: 2162 [2022-01-10 01:43:58,039 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 01:43:58,043 INFO L933 BasicCegarLoop]: 955 mSDtfsCounter, 1235 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:58,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1235 Valid, 1494 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:58,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2022-01-10 01:43:58,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 2136. [2022-01-10 01:43:58,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2136 states, 2131 states have (on average 1.4514312529328954) internal successors, (3093), 2135 states have internal predecessors, (3093), 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 01:43:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3093 transitions. [2022-01-10 01:43:58,162 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3093 transitions. Word has length 150 [2022-01-10 01:43:58,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:58,162 INFO L470 AbstractCegarLoop]: Abstraction has 2136 states and 3093 transitions. [2022-01-10 01:43:58,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 01:43:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3093 transitions. [2022-01-10 01:43:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-10 01:43:58,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:58,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:58,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:43:58,165 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:43:58,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:58,166 INFO L85 PathProgramCache]: Analyzing trace with hash 403786939, now seen corresponding path program 1 times [2022-01-10 01:43:58,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:58,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77612573] [2022-01-10 01:43:58,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:58,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:58,198 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 01:43:58,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:58,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77612573] [2022-01-10 01:43:58,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77612573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:58,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:58,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:43:58,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968628438] [2022-01-10 01:43:58,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:58,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:43:58,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:58,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:43:58,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:43:58,200 INFO L87 Difference]: Start difference. First operand 2136 states and 3093 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 01:43:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:58,410 INFO L93 Difference]: Finished difference Result 6332 states and 9159 transitions. [2022-01-10 01:43:58,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:43:58,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 151 [2022-01-10 01:43:58,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:58,421 INFO L225 Difference]: With dead ends: 6332 [2022-01-10 01:43:58,421 INFO L226 Difference]: Without dead ends: 4240 [2022-01-10 01:43:58,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:43:58,424 INFO L933 BasicCegarLoop]: 1154 mSDtfsCounter, 566 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1736 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 01:43:58,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 1736 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:58,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4240 states. [2022-01-10 01:43:58,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4240 to 2140. [2022-01-10 01:43:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2135 states have (on average 1.4505854800936768) internal successors, (3097), 2139 states have internal predecessors, (3097), 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 01:43:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 3097 transitions. [2022-01-10 01:43:58,548 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 3097 transitions. Word has length 151 [2022-01-10 01:43:58,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:58,549 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 3097 transitions. [2022-01-10 01:43:58,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 01:43:58,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 3097 transitions. [2022-01-10 01:43:58,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 01:43:58,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:58,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:58,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:43:58,551 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:43:58,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:58,552 INFO L85 PathProgramCache]: Analyzing trace with hash -865780987, now seen corresponding path program 1 times [2022-01-10 01:43:58,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:58,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933609951] [2022-01-10 01:43:58,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:58,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:58,638 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 01:43:58,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:58,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933609951] [2022-01-10 01:43:58,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933609951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:58,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:58,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:43:58,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999631660] [2022-01-10 01:43:58,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:58,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:43:58,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:58,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:43:58,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:43:58,641 INFO L87 Difference]: Start difference. First operand 2140 states and 3097 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 01:43:58,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:58,943 INFO L93 Difference]: Finished difference Result 5573 states and 8064 transitions. [2022-01-10 01:43:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:43:58,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 152 [2022-01-10 01:43:58,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:58,954 INFO L225 Difference]: With dead ends: 5573 [2022-01-10 01:43:58,954 INFO L226 Difference]: Without dead ends: 3769 [2022-01-10 01:43:58,957 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 01:43:58,958 INFO L933 BasicCegarLoop]: 1116 mSDtfsCounter, 506 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:58,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 1661 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:58,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2022-01-10 01:43:59,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3743. [2022-01-10 01:43:59,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3743 states, 3738 states have (on average 1.4285714285714286) internal successors, (5340), 3742 states have internal predecessors, (5340), 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 01:43:59,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3743 states to 3743 states and 5340 transitions. [2022-01-10 01:43:59,226 INFO L78 Accepts]: Start accepts. Automaton has 3743 states and 5340 transitions. Word has length 152 [2022-01-10 01:43:59,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:59,226 INFO L470 AbstractCegarLoop]: Abstraction has 3743 states and 5340 transitions. [2022-01-10 01:43:59,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 01:43:59,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3743 states and 5340 transitions. [2022-01-10 01:43:59,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 01:43:59,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:59,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:59,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:43:59,231 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:43:59,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:59,231 INFO L85 PathProgramCache]: Analyzing trace with hash 471058402, now seen corresponding path program 1 times [2022-01-10 01:43:59,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:59,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105494754] [2022-01-10 01:43:59,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:59,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:59,338 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 01:43:59,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:59,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105494754] [2022-01-10 01:43:59,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105494754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:59,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:59,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:43:59,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253914557] [2022-01-10 01:43:59,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:59,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:43:59,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:59,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:43:59,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:43:59,340 INFO L87 Difference]: Start difference. First operand 3743 states and 5340 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 01:43:59,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:59,837 INFO L93 Difference]: Finished difference Result 10650 states and 15175 transitions. [2022-01-10 01:43:59,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:43:59,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-01-10 01:43:59,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:59,857 INFO L225 Difference]: With dead ends: 10650 [2022-01-10 01:43:59,858 INFO L226 Difference]: Without dead ends: 6944 [2022-01-10 01:43:59,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:43:59,864 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 1720 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:59,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1720 Valid, 1524 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:59,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6944 states. [2022-01-10 01:44:00,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6944 to 6923. [2022-01-10 01:44:00,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6923 states, 6918 states have (on average 1.413847932928592) internal successors, (9781), 6922 states have internal predecessors, (9781), 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 01:44:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6923 states to 6923 states and 9781 transitions. [2022-01-10 01:44:00,401 INFO L78 Accepts]: Start accepts. Automaton has 6923 states and 9781 transitions. Word has length 152 [2022-01-10 01:44:00,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:00,402 INFO L470 AbstractCegarLoop]: Abstraction has 6923 states and 9781 transitions. [2022-01-10 01:44:00,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 01:44:00,402 INFO L276 IsEmpty]: Start isEmpty. Operand 6923 states and 9781 transitions. [2022-01-10 01:44:00,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 01:44:00,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:00,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:00,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:44:00,409 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:44:00,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:00,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1318458360, now seen corresponding path program 1 times [2022-01-10 01:44:00,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:00,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815323918] [2022-01-10 01:44:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:00,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:00,498 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 01:44:00,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:00,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815323918] [2022-01-10 01:44:00,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815323918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:00,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:00,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:44:00,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334835819] [2022-01-10 01:44:00,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:00,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:44:00,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:00,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:44:00,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:44:00,500 INFO L87 Difference]: Start difference. First operand 6923 states and 9781 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 01:44:01,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:01,095 INFO L93 Difference]: Finished difference Result 14142 states and 19881 transitions. [2022-01-10 01:44:01,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:44:01,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2022-01-10 01:44:01,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:01,113 INFO L225 Difference]: With dead ends: 14142 [2022-01-10 01:44:01,113 INFO L226 Difference]: Without dead ends: 7336 [2022-01-10 01:44:01,119 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 01:44:01,119 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 1162 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:01,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1162 Valid, 1540 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:44:01,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7336 states. [2022-01-10 01:44:01,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7336 to 7151. [2022-01-10 01:44:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7151 states, 7146 states have (on average 1.4045619927232018) internal successors, (10037), 7150 states have internal predecessors, (10037), 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 01:44:01,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7151 states to 7151 states and 10037 transitions. [2022-01-10 01:44:01,590 INFO L78 Accepts]: Start accepts. Automaton has 7151 states and 10037 transitions. Word has length 152 [2022-01-10 01:44:01,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:01,590 INFO L470 AbstractCegarLoop]: Abstraction has 7151 states and 10037 transitions. [2022-01-10 01:44:01,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 01:44:01,591 INFO L276 IsEmpty]: Start isEmpty. Operand 7151 states and 10037 transitions. [2022-01-10 01:44:01,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 01:44:01,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:01,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:01,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:44:01,598 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:44:01,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:01,598 INFO L85 PathProgramCache]: Analyzing trace with hash -756425508, now seen corresponding path program 1 times [2022-01-10 01:44:01,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:01,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422116479] [2022-01-10 01:44:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:01,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:01,634 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 01:44:01,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:01,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422116479] [2022-01-10 01:44:01,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422116479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:01,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:01,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:44:01,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751091011] [2022-01-10 01:44:01,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:01,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:44:01,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:01,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:44:01,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:44:01,637 INFO L87 Difference]: Start difference. First operand 7151 states and 10037 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 01:44:02,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:02,489 INFO L93 Difference]: Finished difference Result 20719 states and 29169 transitions. [2022-01-10 01:44:02,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:44:02,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 153 [2022-01-10 01:44:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:02,517 INFO L225 Difference]: With dead ends: 20719 [2022-01-10 01:44:02,517 INFO L226 Difference]: Without dead ends: 14177 [2022-01-10 01:44:02,527 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 01:44:02,528 INFO L933 BasicCegarLoop]: 1140 mSDtfsCounter, 552 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1722 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 01:44:02,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 1722 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:44:02,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14177 states. [2022-01-10 01:44:03,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14177 to 7167. [2022-01-10 01:44:03,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7167 states, 7162 states have (on average 1.4036581960346273) internal successors, (10053), 7166 states have internal predecessors, (10053), 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 01:44:03,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10053 transitions. [2022-01-10 01:44:03,031 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10053 transitions. Word has length 153 [2022-01-10 01:44:03,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:03,031 INFO L470 AbstractCegarLoop]: Abstraction has 7167 states and 10053 transitions. [2022-01-10 01:44:03,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 01:44:03,031 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10053 transitions. [2022-01-10 01:44:03,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-10 01:44:03,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:03,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:03,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:44:03,040 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:44:03,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:03,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1459255993, now seen corresponding path program 1 times [2022-01-10 01:44:03,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:03,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75701087] [2022-01-10 01:44:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:03,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:03,158 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 01:44:03,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:03,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75701087] [2022-01-10 01:44:03,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75701087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:03,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:03,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:44:03,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258673] [2022-01-10 01:44:03,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:03,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:44:03,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:03,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:44:03,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:44:03,160 INFO L87 Difference]: Start difference. First operand 7167 states and 10053 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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 01:44:04,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:04,097 INFO L93 Difference]: Finished difference Result 20866 states and 29140 transitions. [2022-01-10 01:44:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:44:04,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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 154 [2022-01-10 01:44:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:04,129 INFO L225 Difference]: With dead ends: 20866 [2022-01-10 01:44:04,130 INFO L226 Difference]: Without dead ends: 13816 [2022-01-10 01:44:04,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:44:04,144 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 1744 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:04,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1744 Valid, 1542 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:44:04,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13816 states. [2022-01-10 01:44:05,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13816 to 13786. [2022-01-10 01:44:05,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13786 states, 13781 states have (on average 1.3821928742471519) internal successors, (19048), 13785 states have internal predecessors, (19048), 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 01:44:05,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13786 states to 13786 states and 19048 transitions. [2022-01-10 01:44:05,203 INFO L78 Accepts]: Start accepts. Automaton has 13786 states and 19048 transitions. Word has length 154 [2022-01-10 01:44:05,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:05,204 INFO L470 AbstractCegarLoop]: Abstraction has 13786 states and 19048 transitions. [2022-01-10 01:44:05,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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 01:44:05,204 INFO L276 IsEmpty]: Start isEmpty. Operand 13786 states and 19048 transitions. [2022-01-10 01:44:05,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-10 01:44:05,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:05,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:05,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:44:05,216 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:44:05,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:05,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2098194761, now seen corresponding path program 1 times [2022-01-10 01:44:05,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:05,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446170503] [2022-01-10 01:44:05,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:05,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:05,303 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 01:44:05,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:05,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446170503] [2022-01-10 01:44:05,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446170503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:05,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:05,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:44:05,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967768051] [2022-01-10 01:44:05,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:05,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:44:05,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:05,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:44:05,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:44:05,305 INFO L87 Difference]: Start difference. First operand 13786 states and 19048 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 01:44:06,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:06,001 INFO L93 Difference]: Finished difference Result 24262 states and 33508 transitions. [2022-01-10 01:44:06,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:44:06,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 154 [2022-01-10 01:44:06,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:06,018 INFO L225 Difference]: With dead ends: 24262 [2022-01-10 01:44:06,018 INFO L226 Difference]: Without dead ends: 10567 [2022-01-10 01:44:06,029 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 01:44:06,030 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 65 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1804 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 01:44:06,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1804 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:44:06,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10567 states. [2022-01-10 01:44:06,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10567 to 10567. [2022-01-10 01:44:06,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10567 states, 10562 states have (on average 1.3801363378148077) internal successors, (14577), 10566 states have internal predecessors, (14577), 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 01:44:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10567 states to 10567 states and 14577 transitions. [2022-01-10 01:44:06,697 INFO L78 Accepts]: Start accepts. Automaton has 10567 states and 14577 transitions. Word has length 154 [2022-01-10 01:44:06,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:06,697 INFO L470 AbstractCegarLoop]: Abstraction has 10567 states and 14577 transitions. [2022-01-10 01:44:06,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 01:44:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 10567 states and 14577 transitions. [2022-01-10 01:44:06,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 01:44:06,711 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:06,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:06,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:44:06,711 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:44:06,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:06,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2135177219, now seen corresponding path program 1 times [2022-01-10 01:44:06,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:06,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988947843] [2022-01-10 01:44:06,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:06,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:06,743 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 01:44:06,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:06,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988947843] [2022-01-10 01:44:06,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988947843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:06,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:06,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:44:06,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234737572] [2022-01-10 01:44:06,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:06,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:44:06,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:06,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:44:06,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:44:06,745 INFO L87 Difference]: Start difference. First operand 10567 states and 14577 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 01:44:07,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:07,884 INFO L93 Difference]: Finished difference Result 24469 states and 34596 transitions. [2022-01-10 01:44:07,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:44:07,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 156 [2022-01-10 01:44:07,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:07,905 INFO L225 Difference]: With dead ends: 24469 [2022-01-10 01:44:07,905 INFO L226 Difference]: Without dead ends: 15072 [2022-01-10 01:44:07,917 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 01:44:07,917 INFO L933 BasicCegarLoop]: 784 mSDtfsCounter, 307 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:07,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 1240 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:44:07,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15072 states. [2022-01-10 01:44:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15072 to 13229. [2022-01-10 01:44:08,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13229 states, 13224 states have (on average 1.4232456140350878) internal successors, (18821), 13228 states have internal predecessors, (18821), 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 01:44:09,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13229 states to 13229 states and 18821 transitions. [2022-01-10 01:44:09,015 INFO L78 Accepts]: Start accepts. Automaton has 13229 states and 18821 transitions. Word has length 156 [2022-01-10 01:44:09,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:09,015 INFO L470 AbstractCegarLoop]: Abstraction has 13229 states and 18821 transitions. [2022-01-10 01:44:09,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 01:44:09,016 INFO L276 IsEmpty]: Start isEmpty. Operand 13229 states and 18821 transitions. [2022-01-10 01:44:09,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 01:44:09,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:09,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:09,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:44:09,027 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:44:09,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:09,027 INFO L85 PathProgramCache]: Analyzing trace with hash 787037030, now seen corresponding path program 1 times [2022-01-10 01:44:09,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:09,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789132100] [2022-01-10 01:44:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:09,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:09,066 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 01:44:09,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:09,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789132100] [2022-01-10 01:44:09,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789132100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:09,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:09,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:44:09,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26351786] [2022-01-10 01:44:09,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:09,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:44:09,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:09,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:44:09,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:44:09,068 INFO L87 Difference]: Start difference. First operand 13229 states and 18821 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 01:44:10,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:10,436 INFO L93 Difference]: Finished difference Result 28929 states and 42160 transitions. [2022-01-10 01:44:10,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:44:10,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 158 [2022-01-10 01:44:10,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:10,461 INFO L225 Difference]: With dead ends: 28929 [2022-01-10 01:44:10,461 INFO L226 Difference]: Without dead ends: 18979 [2022-01-10 01:44:10,473 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 01:44:10,474 INFO L933 BasicCegarLoop]: 805 mSDtfsCounter, 336 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:10,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 1238 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:44:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18979 states. [2022-01-10 01:44:11,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18979 to 17341. [2022-01-10 01:44:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17341 states, 17336 states have (on average 1.4595639132441163) internal successors, (25303), 17340 states have internal predecessors, (25303), 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 01:44:11,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17341 states to 17341 states and 25303 transitions. [2022-01-10 01:44:11,812 INFO L78 Accepts]: Start accepts. Automaton has 17341 states and 25303 transitions. Word has length 158 [2022-01-10 01:44:11,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:11,812 INFO L470 AbstractCegarLoop]: Abstraction has 17341 states and 25303 transitions. [2022-01-10 01:44:11,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 01:44:11,813 INFO L276 IsEmpty]: Start isEmpty. Operand 17341 states and 25303 transitions. [2022-01-10 01:44:11,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 01:44:11,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:11,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:11,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:44:11,823 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:44:11,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:11,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1606523445, now seen corresponding path program 1 times [2022-01-10 01:44:11,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:11,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602007081] [2022-01-10 01:44:11,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:11,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:11,889 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 01:44:11,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:11,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602007081] [2022-01-10 01:44:11,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602007081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:11,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:11,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:44:11,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522575882] [2022-01-10 01:44:11,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:11,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:44:11,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:11,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:44:11,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:44:11,891 INFO L87 Difference]: Start difference. First operand 17341 states and 25303 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 01:44:14,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:14,415 INFO L93 Difference]: Finished difference Result 45048 states and 65700 transitions. [2022-01-10 01:44:14,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:44:14,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 159 [2022-01-10 01:44:14,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:14,458 INFO L225 Difference]: With dead ends: 45048 [2022-01-10 01:44:14,458 INFO L226 Difference]: Without dead ends: 28052 [2022-01-10 01:44:14,473 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 01:44:14,474 INFO L933 BasicCegarLoop]: 1002 mSDtfsCounter, 1152 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:14,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 1517 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:44:14,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28052 states. [2022-01-10 01:44:16,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28052 to 28028. [2022-01-10 01:44:16,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28028 states, 28023 states have (on average 1.4390322235306712) internal successors, (40326), 28027 states have internal predecessors, (40326), 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 01:44:16,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28028 states to 28028 states and 40326 transitions. [2022-01-10 01:44:16,912 INFO L78 Accepts]: Start accepts. Automaton has 28028 states and 40326 transitions. Word has length 159 [2022-01-10 01:44:16,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:16,912 INFO L470 AbstractCegarLoop]: Abstraction has 28028 states and 40326 transitions. [2022-01-10 01:44:16,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 01:44:16,912 INFO L276 IsEmpty]: Start isEmpty. Operand 28028 states and 40326 transitions. [2022-01-10 01:44:16,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 01:44:16,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:16,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:16,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:44:16,927 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:44:16,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:16,927 INFO L85 PathProgramCache]: Analyzing trace with hash 883442860, now seen corresponding path program 1 times [2022-01-10 01:44:16,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:16,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515294158] [2022-01-10 01:44:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:16,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:16,994 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 01:44:16,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:16,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515294158] [2022-01-10 01:44:16,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515294158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:16,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:16,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:44:16,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910994171] [2022-01-10 01:44:16,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:16,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:44:16,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:16,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:44:16,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:44:16,996 INFO L87 Difference]: Start difference. First operand 28028 states and 40326 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 01:44:18,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:18,940 INFO L93 Difference]: Finished difference Result 44477 states and 64087 transitions. [2022-01-10 01:44:18,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:44:18,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 161 [2022-01-10 01:44:18,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:18,971 INFO L225 Difference]: With dead ends: 44477 [2022-01-10 01:44:18,971 INFO L226 Difference]: Without dead ends: 22873 [2022-01-10 01:44:18,987 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 01:44:18,988 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 53 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1775 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 01:44:18,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1775 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:44:19,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22873 states. [2022-01-10 01:44:20,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22873 to 22873. [2022-01-10 01:44:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22873 states, 22868 states have (on average 1.4361553262200455) internal successors, (32842), 22872 states have internal predecessors, (32842), 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 01:44:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22873 states to 22873 states and 32842 transitions. [2022-01-10 01:44:21,035 INFO L78 Accepts]: Start accepts. Automaton has 22873 states and 32842 transitions. Word has length 161 [2022-01-10 01:44:21,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:21,035 INFO L470 AbstractCegarLoop]: Abstraction has 22873 states and 32842 transitions. [2022-01-10 01:44:21,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 01:44:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 22873 states and 32842 transitions. [2022-01-10 01:44:21,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 01:44:21,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:21,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:21,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:44:21,047 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:44:21,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:21,047 INFO L85 PathProgramCache]: Analyzing trace with hash -424216235, now seen corresponding path program 1 times [2022-01-10 01:44:21,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:21,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113251832] [2022-01-10 01:44:21,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:21,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:21,090 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 01:44:21,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:21,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113251832] [2022-01-10 01:44:21,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113251832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:21,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:21,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:44:21,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163740742] [2022-01-10 01:44:21,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:21,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:44:21,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:21,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:44:21,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:44:21,092 INFO L87 Difference]: Start difference. First operand 22873 states and 32842 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 01:44:24,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:24,151 INFO L93 Difference]: Finished difference Result 52067 states and 76255 transitions. [2022-01-10 01:44:24,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:44:24,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 165 [2022-01-10 01:44:24,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:24,203 INFO L225 Difference]: With dead ends: 52067 [2022-01-10 01:44:24,203 INFO L226 Difference]: Without dead ends: 34271 [2022-01-10 01:44:24,222 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 01:44:24,223 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 303 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:24,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 1219 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:44:24,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34271 states. [2022-01-10 01:44:27,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34271 to 31753. [2022-01-10 01:44:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31753 states, 31748 states have (on average 1.4697618747637646) internal successors, (46662), 31752 states have internal predecessors, (46662), 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 01:44:27,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31753 states to 31753 states and 46662 transitions. [2022-01-10 01:44:27,509 INFO L78 Accepts]: Start accepts. Automaton has 31753 states and 46662 transitions. Word has length 165 [2022-01-10 01:44:27,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:27,509 INFO L470 AbstractCegarLoop]: Abstraction has 31753 states and 46662 transitions. [2022-01-10 01:44:27,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 01:44:27,510 INFO L276 IsEmpty]: Start isEmpty. Operand 31753 states and 46662 transitions. [2022-01-10 01:44:27,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 01:44:27,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:27,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:27,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:44:27,520 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:44:27,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:27,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1525395194, now seen corresponding path program 1 times [2022-01-10 01:44:27,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:27,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552476244] [2022-01-10 01:44:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:27,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:27,634 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 01:44:27,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:27,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552476244] [2022-01-10 01:44:27,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552476244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:27,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:27,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:44:27,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946440191] [2022-01-10 01:44:27,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:27,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:44:27,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:27,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:44:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:44:27,636 INFO L87 Difference]: Start difference. First operand 31753 states and 46662 transitions. Second operand has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 8 states have internal predecessors, (166), 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 01:44:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:43,500 INFO L93 Difference]: Finished difference Result 154377 states and 231123 transitions. [2022-01-10 01:44:43,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 01:44:43,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 8 states have internal predecessors, (166), 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 166 [2022-01-10 01:44:43,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:43,782 INFO L225 Difference]: With dead ends: 154377 [2022-01-10 01:44:43,782 INFO L226 Difference]: Without dead ends: 126451 [2022-01-10 01:44:43,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2022-01-10 01:44:43,831 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 5919 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5919 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:43,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5919 Valid, 2710 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 01:44:43,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126451 states. [2022-01-10 01:44:54,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126451 to 85305. [2022-01-10 01:44:54,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85305 states, 85300 states have (on average 1.47989449003517) internal successors, (126235), 85304 states have internal predecessors, (126235), 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 01:44:54,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85305 states to 85305 states and 126235 transitions. [2022-01-10 01:44:54,787 INFO L78 Accepts]: Start accepts. Automaton has 85305 states and 126235 transitions. Word has length 166 [2022-01-10 01:44:54,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:54,787 INFO L470 AbstractCegarLoop]: Abstraction has 85305 states and 126235 transitions. [2022-01-10 01:44:54,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 8 states have internal predecessors, (166), 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 01:44:54,787 INFO L276 IsEmpty]: Start isEmpty. Operand 85305 states and 126235 transitions. [2022-01-10 01:44:54,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 01:44:54,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:54,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:54,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 01:44:54,922 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 01:44:54,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:54,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1116845734, now seen corresponding path program 1 times [2022-01-10 01:44:54,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:54,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968420760] [2022-01-10 01:44:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:54,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:55,049 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 01:44:55,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:55,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968420760] [2022-01-10 01:44:55,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968420760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:55,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:55,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:44:55,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176728349] [2022-01-10 01:44:55,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:55,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:44:55,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:55,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:44:55,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:44:55,050 INFO L87 Difference]: Start difference. First operand 85305 states and 126235 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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)