/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.05.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 07:42:23,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 07:42:23,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 07:42:23,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 07:42:23,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 07:42:23,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 07:42:23,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 07:42:23,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 07:42:23,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 07:42:23,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 07:42:23,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 07:42:23,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 07:42:23,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 07:42:23,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 07:42:23,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 07:42:23,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 07:42:23,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 07:42:23,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 07:42:23,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 07:42:23,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 07:42:23,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 07:42:23,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 07:42:23,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 07:42:23,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 07:42:23,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 07:42:23,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 07:42:23,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 07:42:23,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 07:42:23,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 07:42:23,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 07:42:23,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 07:42:23,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 07:42:23,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 07:42:23,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 07:42:23,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 07:42:23,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 07:42:23,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 07:42:23,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 07:42:23,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 07:42:23,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 07:42:23,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 07:42:23,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 07:42:23,853 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 07:42:23,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 07:42:23,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 07:42:23,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 07:42:23,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 07:42:23,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 07:42:23,854 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 07:42:23,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 07:42:23,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 07:42:23,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 07:42:23,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 07:42:23,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 07:42:23,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 07:42:23,855 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 07:42:23,855 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 07:42:23,855 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 07:42:23,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 07:42:23,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 07:42:23,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 07:42:23,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 07:42:23,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 07:42:23,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:42:23,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 07:42:23,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 07:42:23,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 07:42:23,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 07:42:23,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 07:42:23,856 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 07:42:23,856 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 07:42:23,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 07:42:23,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 07:42:23,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 07:42:23,857 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 07:42:23,857 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 07:42:24,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 07:42:24,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 07:42:24,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 07:42:24,076 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 07:42:24,078 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 07:42:24,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.05.cil-2.c [2022-01-11 07:42:24,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5553a4f2b/7a8bbb38fba244d9b44a6ca8862c4406/FLAGc44d3b5c8 [2022-01-11 07:42:24,448 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 07:42:24,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.05.cil-2.c [2022-01-11 07:42:24,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5553a4f2b/7a8bbb38fba244d9b44a6ca8862c4406/FLAGc44d3b5c8 [2022-01-11 07:42:24,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5553a4f2b/7a8bbb38fba244d9b44a6ca8862c4406 [2022-01-11 07:42:24,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 07:42:24,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 07:42:24,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 07:42:24,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 07:42:24,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 07:42:24,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:42:24" (1/1) ... [2022-01-11 07:42:24,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9680e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:24, skipping insertion in model container [2022-01-11 07:42:24,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:42:24" (1/1) ... [2022-01-11 07:42:24,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 07:42:24,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 07:42:25,044 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.05.cil-2.c[911,924] [2022-01-11 07:42:25,082 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.05.cil-2.c[8416,8429] [2022-01-11 07:42:25,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:42:25,160 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 07:42:25,167 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.05.cil-2.c[911,924] [2022-01-11 07:42:25,187 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.05.cil-2.c[8416,8429] [2022-01-11 07:42:25,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:42:25,235 INFO L208 MainTranslator]: Completed translation [2022-01-11 07:42:25,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:25 WrapperNode [2022-01-11 07:42:25,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 07:42:25,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 07:42:25,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 07:42:25,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 07:42:25,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:25" (1/1) ... [2022-01-11 07:42:25,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:25" (1/1) ... [2022-01-11 07:42:25,336 INFO L137 Inliner]: procedures = 66, calls = 77, calls flagged for inlining = 72, calls inlined = 128, statements flattened = 1757 [2022-01-11 07:42:25,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 07:42:25,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 07:42:25,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 07:42:25,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 07:42:25,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:25" (1/1) ... [2022-01-11 07:42:25,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:25" (1/1) ... [2022-01-11 07:42:25,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:25" (1/1) ... [2022-01-11 07:42:25,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:25" (1/1) ... [2022-01-11 07:42:25,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:25" (1/1) ... [2022-01-11 07:42:25,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:25" (1/1) ... [2022-01-11 07:42:25,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:25" (1/1) ... [2022-01-11 07:42:25,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 07:42:25,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 07:42:25,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 07:42:25,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 07:42:25,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:25" (1/1) ... [2022-01-11 07:42:25,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:42:25,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 07:42:25,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 07:42:25,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 07:42:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 07:42:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 07:42:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 07:42:25,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 07:42:25,615 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 07:42:25,616 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 07:42:26,417 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume !(1bv32 == ~q_free~0); [2022-01-11 07:42:26,418 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##106: assume 1bv32 == ~q_free~0;~c_dr_st~0 := 2bv32;~c_dr_pc~0 := 2bv32;~a_t~0 := do_read_c_~a~0#1; [2022-01-11 07:42:26,418 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 07:42:26,431 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 07:42:26,431 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-01-11 07:42:26,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:42:26 BoogieIcfgContainer [2022-01-11 07:42:26,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 07:42:26,434 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 07:42:26,434 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 07:42:26,435 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 07:42:26,437 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:42:26" (1/1) ... [2022-01-11 07:42:26,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:42:26 BasicIcfg [2022-01-11 07:42:26,665 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 07:42:26,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 07:42:26,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 07:42:26,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 07:42:26,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 07:42:24" (1/4) ... [2022-01-11 07:42:26,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dbe0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:42:26, skipping insertion in model container [2022-01-11 07:42:26,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:25" (2/4) ... [2022-01-11 07:42:26,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dbe0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:42:26, skipping insertion in model container [2022-01-11 07:42:26,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:42:26" (3/4) ... [2022-01-11 07:42:26,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dbe0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 07:42:26, skipping insertion in model container [2022-01-11 07:42:26,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:42:26" (4/4) ... [2022-01-11 07:42:26,671 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.05.cil-2.cTransformedIcfg [2022-01-11 07:42:26,675 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 07:42:26,676 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-11 07:42:26,721 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 07:42:26,725 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 07:42:26,725 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-11 07:42:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 703 states, 698 states have (on average 1.5444126074498568) internal successors, (1078), 702 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 07:42:26,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:26,757 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] [2022-01-11 07:42:26,758 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:26,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:26,762 INFO L85 PathProgramCache]: Analyzing trace with hash -867618187, now seen corresponding path program 1 times [2022-01-11 07:42:26,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:26,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726350994] [2022-01-11 07:42:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:26,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:27,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:27,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726350994] [2022-01-11 07:42:27,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726350994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:27,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:27,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:27,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636905310] [2022-01-11 07:42:27,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:27,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:27,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:27,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:27,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:27,076 INFO L87 Difference]: Start difference. First operand has 703 states, 698 states have (on average 1.5444126074498568) internal successors, (1078), 702 states have internal predecessors, (1078), 0 states have call successors, (0), 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 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:27,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:27,272 INFO L93 Difference]: Finished difference Result 1449 states and 2220 transitions. [2022-01-11 07:42:27,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:27,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 07:42:27,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:27,315 INFO L225 Difference]: With dead ends: 1449 [2022-01-11 07:42:27,316 INFO L226 Difference]: Without dead ends: 825 [2022-01-11 07:42:27,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:27,325 INFO L933 BasicCegarLoop]: 1040 mSDtfsCounter, 185 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:27,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 2048 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:42:27,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-01-11 07:42:27,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 821. [2022-01-11 07:42:27,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 817 states have (on average 1.4944920440636476) internal successors, (1221), 820 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1221 transitions. [2022-01-11 07:42:27,447 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1221 transitions. Word has length 44 [2022-01-11 07:42:27,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:27,448 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1221 transitions. [2022-01-11 07:42:27,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:27,448 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1221 transitions. [2022-01-11 07:42:27,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 07:42:27,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:27,454 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] [2022-01-11 07:42:27,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 07:42:27,454 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:27,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:27,461 INFO L85 PathProgramCache]: Analyzing trace with hash 630058613, now seen corresponding path program 1 times [2022-01-11 07:42:27,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:27,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072023016] [2022-01-11 07:42:27,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:27,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:27,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:27,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072023016] [2022-01-11 07:42:27,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072023016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:27,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:27,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:27,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673410572] [2022-01-11 07:42:27,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:27,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:27,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:27,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:27,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:27,585 INFO L87 Difference]: Start difference. First operand 821 states and 1221 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:27,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:27,653 INFO L93 Difference]: Finished difference Result 1239 states and 1826 transitions. [2022-01-11 07:42:27,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:27,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 07:42:27,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:27,656 INFO L225 Difference]: With dead ends: 1239 [2022-01-11 07:42:27,657 INFO L226 Difference]: Without dead ends: 999 [2022-01-11 07:42:27,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:27,658 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 999 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 1160 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 [2022-01-11 07:42:27,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [999 Valid, 1160 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:27,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-01-11 07:42:27,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 991. [2022-01-11 07:42:27,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 987 states have (on average 1.475177304964539) internal successors, (1456), 990 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:27,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1456 transitions. [2022-01-11 07:42:27,685 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1456 transitions. Word has length 44 [2022-01-11 07:42:27,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:27,686 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 1456 transitions. [2022-01-11 07:42:27,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:27,688 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1456 transitions. [2022-01-11 07:42:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-11 07:42:27,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:27,696 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] [2022-01-11 07:42:27,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 07:42:27,697 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:27,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:27,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1481517482, now seen corresponding path program 1 times [2022-01-11 07:42:27,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:27,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69380385] [2022-01-11 07:42:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:27,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:27,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:27,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69380385] [2022-01-11 07:42:27,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69380385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:27,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:27,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:27,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985141219] [2022-01-11 07:42:27,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:27,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:27,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:27,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:27,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:27,765 INFO L87 Difference]: Start difference. First operand 991 states and 1456 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:27,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:27,823 INFO L93 Difference]: Finished difference Result 1713 states and 2490 transitions. [2022-01-11 07:42:27,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:27,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-11 07:42:27,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:27,827 INFO L225 Difference]: With dead ends: 1713 [2022-01-11 07:42:27,827 INFO L226 Difference]: Without dead ends: 1317 [2022-01-11 07:42:27,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:27,833 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 983 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:27,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 1157 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:27,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2022-01-11 07:42:27,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1309. [2022-01-11 07:42:27,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1305 states have (on average 1.4475095785440613) internal successors, (1889), 1308 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:27,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1889 transitions. [2022-01-11 07:42:27,867 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1889 transitions. Word has length 45 [2022-01-11 07:42:27,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:27,867 INFO L470 AbstractCegarLoop]: Abstraction has 1309 states and 1889 transitions. [2022-01-11 07:42:27,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:27,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1889 transitions. [2022-01-11 07:42:27,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 07:42:27,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:27,869 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:27,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 07:42:27,869 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:27,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:27,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1890631859, now seen corresponding path program 1 times [2022-01-11 07:42:27,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:27,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325113330] [2022-01-11 07:42:27,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:27,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 07:42:27,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:27,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325113330] [2022-01-11 07:42:27,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325113330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:27,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:27,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:27,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388301158] [2022-01-11 07:42:27,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:27,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:27,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:27,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:27,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:27,928 INFO L87 Difference]: Start difference. First operand 1309 states and 1889 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:28,024 INFO L93 Difference]: Finished difference Result 2677 states and 3791 transitions. [2022-01-11 07:42:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:28,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 59 [2022-01-11 07:42:28,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:28,030 INFO L225 Difference]: With dead ends: 2677 [2022-01-11 07:42:28,030 INFO L226 Difference]: Without dead ends: 1981 [2022-01-11 07:42:28,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:28,035 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 978 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:28,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 1187 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:28,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2022-01-11 07:42:28,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1977. [2022-01-11 07:42:28,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1973 states have (on average 1.4064875823618854) internal successors, (2775), 1976 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2775 transitions. [2022-01-11 07:42:28,088 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2775 transitions. Word has length 59 [2022-01-11 07:42:28,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:28,089 INFO L470 AbstractCegarLoop]: Abstraction has 1977 states and 2775 transitions. [2022-01-11 07:42:28,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2775 transitions. [2022-01-11 07:42:28,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 07:42:28,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:28,091 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:28,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 07:42:28,091 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:28,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:28,093 INFO L85 PathProgramCache]: Analyzing trace with hash -856546801, now seen corresponding path program 1 times [2022-01-11 07:42:28,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:28,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914300093] [2022-01-11 07:42:28,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:28,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:28,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:28,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914300093] [2022-01-11 07:42:28,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914300093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:28,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:28,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:28,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280981731] [2022-01-11 07:42:28,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:28,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:28,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:28,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:28,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:28,143 INFO L87 Difference]: Start difference. First operand 1977 states and 2775 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:28,236 INFO L93 Difference]: Finished difference Result 4601 states and 6357 transitions. [2022-01-11 07:42:28,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:28,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-11 07:42:28,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:28,245 INFO L225 Difference]: With dead ends: 4601 [2022-01-11 07:42:28,245 INFO L226 Difference]: Without dead ends: 3281 [2022-01-11 07:42:28,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:28,248 INFO L933 BasicCegarLoop]: 1167 mSDtfsCounter, 146 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:28,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 2176 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:28,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-01-11 07:42:28,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3281. [2022-01-11 07:42:28,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 3277 states have (on average 1.374122673176686) internal successors, (4503), 3280 states have internal predecessors, (4503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 4503 transitions. [2022-01-11 07:42:28,352 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 4503 transitions. Word has length 61 [2022-01-11 07:42:28,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:28,353 INFO L470 AbstractCegarLoop]: Abstraction has 3281 states and 4503 transitions. [2022-01-11 07:42:28,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 4503 transitions. [2022-01-11 07:42:28,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:28,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:28,356 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] [2022-01-11 07:42:28,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 07:42:28,356 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:28,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:28,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1614359107, now seen corresponding path program 1 times [2022-01-11 07:42:28,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:28,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689553998] [2022-01-11 07:42:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:28,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:28,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:28,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689553998] [2022-01-11 07:42:28,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689553998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:28,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:28,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:28,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813667568] [2022-01-11 07:42:28,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:28,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:28,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:28,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:28,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:28,409 INFO L87 Difference]: Start difference. First operand 3281 states and 4503 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:28,476 INFO L93 Difference]: Finished difference Result 3831 states and 5329 transitions. [2022-01-11 07:42:28,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:28,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:28,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:28,484 INFO L225 Difference]: With dead ends: 3831 [2022-01-11 07:42:28,484 INFO L226 Difference]: Without dead ends: 3281 [2022-01-11 07:42:28,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:28,488 INFO L933 BasicCegarLoop]: 1024 mSDtfsCounter, 827 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:28,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 1218 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:28,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-01-11 07:42:28,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3281. [2022-01-11 07:42:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 3277 states have (on average 1.3738175160207506) internal successors, (4502), 3280 states have internal predecessors, (4502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 4502 transitions. [2022-01-11 07:42:28,577 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 4502 transitions. Word has length 88 [2022-01-11 07:42:28,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:28,578 INFO L470 AbstractCegarLoop]: Abstraction has 3281 states and 4502 transitions. [2022-01-11 07:42:28,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 4502 transitions. [2022-01-11 07:42:28,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:28,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:28,581 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] [2022-01-11 07:42:28,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 07:42:28,581 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:28,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:28,582 INFO L85 PathProgramCache]: Analyzing trace with hash -129303556, now seen corresponding path program 1 times [2022-01-11 07:42:28,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:28,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059033318] [2022-01-11 07:42:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:28,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:28,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:28,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059033318] [2022-01-11 07:42:28,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059033318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:28,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:28,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:28,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190871615] [2022-01-11 07:42:28,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:28,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:28,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:28,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:28,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:28,632 INFO L87 Difference]: Start difference. First operand 3281 states and 4502 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:28,765 INFO L93 Difference]: Finished difference Result 4256 states and 5957 transitions. [2022-01-11 07:42:28,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:28,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:28,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:28,776 INFO L225 Difference]: With dead ends: 4256 [2022-01-11 07:42:28,776 INFO L226 Difference]: Without dead ends: 3713 [2022-01-11 07:42:28,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:28,778 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 945 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:28,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [945 Valid, 1717 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:28,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-01-11 07:42:28,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3709. [2022-01-11 07:42:28,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 3705 states have (on average 1.3867746288798921) internal successors, (5138), 3708 states have internal predecessors, (5138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 5138 transitions. [2022-01-11 07:42:28,891 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 5138 transitions. Word has length 88 [2022-01-11 07:42:28,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:28,891 INFO L470 AbstractCegarLoop]: Abstraction has 3709 states and 5138 transitions. [2022-01-11 07:42:28,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 5138 transitions. [2022-01-11 07:42:28,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:28,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:28,898 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] [2022-01-11 07:42:28,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 07:42:28,898 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:28,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:28,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1941125660, now seen corresponding path program 1 times [2022-01-11 07:42:28,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:28,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860358098] [2022-01-11 07:42:28,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:28,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:28,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:28,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860358098] [2022-01-11 07:42:28,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860358098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:28,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:28,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:28,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113104192] [2022-01-11 07:42:28,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:28,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:28,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:28,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:28,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:28,937 INFO L87 Difference]: Start difference. First operand 3709 states and 5138 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:29,023 INFO L93 Difference]: Finished difference Result 4679 states and 6586 transitions. [2022-01-11 07:42:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:29,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:29,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:29,032 INFO L225 Difference]: With dead ends: 4679 [2022-01-11 07:42:29,032 INFO L226 Difference]: Without dead ends: 3709 [2022-01-11 07:42:29,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:29,034 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 1005 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:29,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 1013 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:29,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2022-01-11 07:42:29,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 3709. [2022-01-11 07:42:29,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 3705 states have (on average 1.3846153846153846) internal successors, (5130), 3708 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 5130 transitions. [2022-01-11 07:42:29,163 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 5130 transitions. Word has length 88 [2022-01-11 07:42:29,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:29,163 INFO L470 AbstractCegarLoop]: Abstraction has 3709 states and 5130 transitions. [2022-01-11 07:42:29,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 5130 transitions. [2022-01-11 07:42:29,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:29,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:29,167 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] [2022-01-11 07:42:29,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 07:42:29,167 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:29,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:29,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1455769604, now seen corresponding path program 1 times [2022-01-11 07:42:29,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:29,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253475336] [2022-01-11 07:42:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:29,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:29,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:29,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253475336] [2022-01-11 07:42:29,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253475336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:29,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:29,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:29,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893860650] [2022-01-11 07:42:29,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:29,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:29,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:29,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:29,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:29,194 INFO L87 Difference]: Start difference. First operand 3709 states and 5130 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:29,287 INFO L93 Difference]: Finished difference Result 4678 states and 6569 transitions. [2022-01-11 07:42:29,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:29,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:29,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:29,298 INFO L225 Difference]: With dead ends: 4678 [2022-01-11 07:42:29,298 INFO L226 Difference]: Without dead ends: 3709 [2022-01-11 07:42:29,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:29,301 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 999 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:29,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [999 Valid, 1008 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:29,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2022-01-11 07:42:29,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 3709. [2022-01-11 07:42:29,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 3705 states have (on average 1.3824561403508773) internal successors, (5122), 3708 states have internal predecessors, (5122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 5122 transitions. [2022-01-11 07:42:29,412 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 5122 transitions. Word has length 88 [2022-01-11 07:42:29,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:29,413 INFO L470 AbstractCegarLoop]: Abstraction has 3709 states and 5122 transitions. [2022-01-11 07:42:29,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 5122 transitions. [2022-01-11 07:42:29,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:29,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:29,417 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] [2022-01-11 07:42:29,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 07:42:29,418 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:29,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:29,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1205599772, now seen corresponding path program 1 times [2022-01-11 07:42:29,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:29,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168234427] [2022-01-11 07:42:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:29,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:29,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:29,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168234427] [2022-01-11 07:42:29,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168234427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:29,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:29,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:29,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213042073] [2022-01-11 07:42:29,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:29,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:29,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:29,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:29,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:29,449 INFO L87 Difference]: Start difference. First operand 3709 states and 5122 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:29,531 INFO L93 Difference]: Finished difference Result 4677 states and 6552 transitions. [2022-01-11 07:42:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:29,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:29,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:29,552 INFO L225 Difference]: With dead ends: 4677 [2022-01-11 07:42:29,552 INFO L226 Difference]: Without dead ends: 3709 [2022-01-11 07:42:29,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:29,554 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 993 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:29,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [993 Valid, 1003 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:29,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2022-01-11 07:42:29,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 3709. [2022-01-11 07:42:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 3705 states have (on average 1.3802968960863697) internal successors, (5114), 3708 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 5114 transitions. [2022-01-11 07:42:29,718 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 5114 transitions. Word has length 88 [2022-01-11 07:42:29,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:29,718 INFO L470 AbstractCegarLoop]: Abstraction has 3709 states and 5114 transitions. [2022-01-11 07:42:29,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 5114 transitions. [2022-01-11 07:42:29,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:29,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:29,722 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] [2022-01-11 07:42:29,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 07:42:29,722 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:29,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:29,723 INFO L85 PathProgramCache]: Analyzing trace with hash 183071740, now seen corresponding path program 1 times [2022-01-11 07:42:29,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:29,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625180470] [2022-01-11 07:42:29,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:29,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:29,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:29,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625180470] [2022-01-11 07:42:29,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625180470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:29,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:29,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:29,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686361344] [2022-01-11 07:42:29,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:29,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:29,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:29,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:29,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:29,760 INFO L87 Difference]: Start difference. First operand 3709 states and 5114 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:29,844 INFO L93 Difference]: Finished difference Result 4675 states and 6533 transitions. [2022-01-11 07:42:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:29,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:29,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:29,849 INFO L225 Difference]: With dead ends: 4675 [2022-01-11 07:42:29,850 INFO L226 Difference]: Without dead ends: 3709 [2022-01-11 07:42:29,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:29,851 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 986 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:29,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 998 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:29,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2022-01-11 07:42:29,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 3709. [2022-01-11 07:42:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 3705 states have (on average 1.3781376518218624) internal successors, (5106), 3708 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 5106 transitions. [2022-01-11 07:42:29,994 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 5106 transitions. Word has length 88 [2022-01-11 07:42:29,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:29,994 INFO L470 AbstractCegarLoop]: Abstraction has 3709 states and 5106 transitions. [2022-01-11 07:42:29,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 5106 transitions. [2022-01-11 07:42:29,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:29,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:29,997 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] [2022-01-11 07:42:29,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 07:42:29,997 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:29,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:29,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1956307420, now seen corresponding path program 1 times [2022-01-11 07:42:29,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:29,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330168549] [2022-01-11 07:42:29,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:29,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:30,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:30,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:30,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330168549] [2022-01-11 07:42:30,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330168549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:30,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:30,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:30,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454901000] [2022-01-11 07:42:30,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:30,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:30,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:30,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:30,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:30,027 INFO L87 Difference]: Start difference. First operand 3709 states and 5106 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:30,134 INFO L93 Difference]: Finished difference Result 4674 states and 6516 transitions. [2022-01-11 07:42:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:30,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:30,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:30,139 INFO L225 Difference]: With dead ends: 4674 [2022-01-11 07:42:30,140 INFO L226 Difference]: Without dead ends: 3709 [2022-01-11 07:42:30,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:30,142 INFO L933 BasicCegarLoop]: 977 mSDtfsCounter, 910 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:30,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [910 Valid, 1035 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:30,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2022-01-11 07:42:30,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 3709. [2022-01-11 07:42:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 3705 states have (on average 1.3721997300944668) internal successors, (5084), 3708 states have internal predecessors, (5084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 5084 transitions. [2022-01-11 07:42:30,261 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 5084 transitions. Word has length 88 [2022-01-11 07:42:30,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:30,261 INFO L470 AbstractCegarLoop]: Abstraction has 3709 states and 5084 transitions. [2022-01-11 07:42:30,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 5084 transitions. [2022-01-11 07:42:30,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:30,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:30,265 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] [2022-01-11 07:42:30,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 07:42:30,265 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:30,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:30,266 INFO L85 PathProgramCache]: Analyzing trace with hash -702506117, now seen corresponding path program 1 times [2022-01-11 07:42:30,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:30,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150614517] [2022-01-11 07:42:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:30,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:30,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:30,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:30,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150614517] [2022-01-11 07:42:30,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150614517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:30,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:30,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:30,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460303273] [2022-01-11 07:42:30,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:30,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:30,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:30,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:30,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:30,291 INFO L87 Difference]: Start difference. First operand 3709 states and 5084 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:30,412 INFO L93 Difference]: Finished difference Result 4673 states and 6471 transitions. [2022-01-11 07:42:30,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:30,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:30,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:30,418 INFO L225 Difference]: With dead ends: 4673 [2022-01-11 07:42:30,418 INFO L226 Difference]: Without dead ends: 3709 [2022-01-11 07:42:30,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:30,422 INFO L933 BasicCegarLoop]: 964 mSDtfsCounter, 897 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:30,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 1021 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:30,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2022-01-11 07:42:30,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 3709. [2022-01-11 07:42:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 3705 states have (on average 1.3662618083670715) internal successors, (5062), 3708 states have internal predecessors, (5062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 5062 transitions. [2022-01-11 07:42:30,557 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 5062 transitions. Word has length 88 [2022-01-11 07:42:30,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:30,558 INFO L470 AbstractCegarLoop]: Abstraction has 3709 states and 5062 transitions. [2022-01-11 07:42:30,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 5062 transitions. [2022-01-11 07:42:30,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:30,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:30,561 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] [2022-01-11 07:42:30,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 07:42:30,561 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:30,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:30,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1357643429, now seen corresponding path program 1 times [2022-01-11 07:42:30,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:30,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286224285] [2022-01-11 07:42:30,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:30,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:30,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:30,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:30,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286224285] [2022-01-11 07:42:30,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286224285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:30,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:30,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:30,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292471447] [2022-01-11 07:42:30,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:30,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:30,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:30,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:30,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:30,587 INFO L87 Difference]: Start difference. First operand 3709 states and 5062 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:30,694 INFO L93 Difference]: Finished difference Result 4672 states and 6426 transitions. [2022-01-11 07:42:30,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:30,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:30,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:30,699 INFO L225 Difference]: With dead ends: 4672 [2022-01-11 07:42:30,699 INFO L226 Difference]: Without dead ends: 3709 [2022-01-11 07:42:30,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:30,701 INFO L933 BasicCegarLoop]: 951 mSDtfsCounter, 884 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:30,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 1007 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2022-01-11 07:42:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 3709. [2022-01-11 07:42:30,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 3705 states have (on average 1.360323886639676) internal successors, (5040), 3708 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 5040 transitions. [2022-01-11 07:42:30,823 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 5040 transitions. Word has length 88 [2022-01-11 07:42:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:30,823 INFO L470 AbstractCegarLoop]: Abstraction has 3709 states and 5040 transitions. [2022-01-11 07:42:30,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 5040 transitions. [2022-01-11 07:42:30,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:30,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:30,827 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] [2022-01-11 07:42:30,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 07:42:30,827 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:30,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:30,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1074448762, now seen corresponding path program 1 times [2022-01-11 07:42:30,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:30,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425438633] [2022-01-11 07:42:30,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:30,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:30,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:30,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425438633] [2022-01-11 07:42:30,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425438633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:30,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:30,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:30,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054341036] [2022-01-11 07:42:30,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:30,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:30,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:30,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:30,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:30,851 INFO L87 Difference]: Start difference. First operand 3709 states and 5040 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:30,957 INFO L93 Difference]: Finished difference Result 4671 states and 6381 transitions. [2022-01-11 07:42:30,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:30,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:30,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:30,963 INFO L225 Difference]: With dead ends: 4671 [2022-01-11 07:42:30,963 INFO L226 Difference]: Without dead ends: 3709 [2022-01-11 07:42:30,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:30,965 INFO L933 BasicCegarLoop]: 938 mSDtfsCounter, 871 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:30,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 993 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:30,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2022-01-11 07:42:31,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 3709. [2022-01-11 07:42:31,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 3705 states have (on average 1.3543859649122807) internal successors, (5018), 3708 states have internal predecessors, (5018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:31,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 5018 transitions. [2022-01-11 07:42:31,110 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 5018 transitions. Word has length 88 [2022-01-11 07:42:31,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:31,110 INFO L470 AbstractCegarLoop]: Abstraction has 3709 states and 5018 transitions. [2022-01-11 07:42:31,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:31,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 5018 transitions. [2022-01-11 07:42:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:31,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:31,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:31,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 07:42:31,114 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:31,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash 14138521, now seen corresponding path program 1 times [2022-01-11 07:42:31,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:31,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636476567] [2022-01-11 07:42:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:31,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:31,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:31,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:31,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636476567] [2022-01-11 07:42:31,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636476567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:31,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:31,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:31,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038863909] [2022-01-11 07:42:31,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:31,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:31,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:31,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:31,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:31,140 INFO L87 Difference]: Start difference. First operand 3709 states and 5018 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:31,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:31,288 INFO L93 Difference]: Finished difference Result 4670 states and 6336 transitions. [2022-01-11 07:42:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:31,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:31,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:31,294 INFO L225 Difference]: With dead ends: 4670 [2022-01-11 07:42:31,294 INFO L226 Difference]: Without dead ends: 3709 [2022-01-11 07:42:31,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:31,296 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 858 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:31,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 979 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2022-01-11 07:42:31,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 3709. [2022-01-11 07:42:31,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 3705 states have (on average 1.3484480431848853) internal successors, (4996), 3708 states have internal predecessors, (4996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 4996 transitions. [2022-01-11 07:42:31,408 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 4996 transitions. Word has length 88 [2022-01-11 07:42:31,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:31,408 INFO L470 AbstractCegarLoop]: Abstraction has 3709 states and 4996 transitions. [2022-01-11 07:42:31,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:31,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 4996 transitions. [2022-01-11 07:42:31,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:31,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:31,422 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] [2022-01-11 07:42:31,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 07:42:31,423 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:31,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:31,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1196905272, now seen corresponding path program 1 times [2022-01-11 07:42:31,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:31,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062018373] [2022-01-11 07:42:31,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:31,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:31,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:31,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062018373] [2022-01-11 07:42:31,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062018373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:31,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:31,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:31,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400942944] [2022-01-11 07:42:31,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:31,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:31,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:31,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:31,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:31,448 INFO L87 Difference]: Start difference. First operand 3709 states and 4996 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:31,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:31,564 INFO L93 Difference]: Finished difference Result 4669 states and 6291 transitions. [2022-01-11 07:42:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:31,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:31,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:31,569 INFO L225 Difference]: With dead ends: 4669 [2022-01-11 07:42:31,569 INFO L226 Difference]: Without dead ends: 3709 [2022-01-11 07:42:31,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:31,570 INFO L933 BasicCegarLoop]: 912 mSDtfsCounter, 845 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:31,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 965 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:31,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2022-01-11 07:42:31,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 3709. [2022-01-11 07:42:31,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 3705 states have (on average 1.34251012145749) internal successors, (4974), 3708 states have internal predecessors, (4974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:31,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 4974 transitions. [2022-01-11 07:42:31,683 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 4974 transitions. Word has length 88 [2022-01-11 07:42:31,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:31,684 INFO L470 AbstractCegarLoop]: Abstraction has 3709 states and 4974 transitions. [2022-01-11 07:42:31,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:31,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 4974 transitions. [2022-01-11 07:42:31,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:31,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:31,686 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] [2022-01-11 07:42:31,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 07:42:31,687 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:31,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash 81847511, now seen corresponding path program 1 times [2022-01-11 07:42:31,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:31,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581918604] [2022-01-11 07:42:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:31,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:31,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:31,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581918604] [2022-01-11 07:42:31,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581918604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:31,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:31,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:42:31,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672582606] [2022-01-11 07:42:31,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:31,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:42:31,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:31,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:42:31,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:42:31,730 INFO L87 Difference]: Start difference. First operand 3709 states and 4974 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:31,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:31,974 INFO L93 Difference]: Finished difference Result 5136 states and 6905 transitions. [2022-01-11 07:42:31,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:42:31,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:31,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:31,980 INFO L225 Difference]: With dead ends: 5136 [2022-01-11 07:42:31,980 INFO L226 Difference]: Without dead ends: 4183 [2022-01-11 07:42:31,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:42:31,982 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 2025 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:31,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2025 Valid, 2558 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:31,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2022-01-11 07:42:32,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 3715. [2022-01-11 07:42:32,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3715 states, 3711 states have (on average 1.338183777957424) internal successors, (4966), 3714 states have internal predecessors, (4966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:32,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3715 states to 3715 states and 4966 transitions. [2022-01-11 07:42:32,123 INFO L78 Accepts]: Start accepts. Automaton has 3715 states and 4966 transitions. Word has length 88 [2022-01-11 07:42:32,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:32,123 INFO L470 AbstractCegarLoop]: Abstraction has 3715 states and 4966 transitions. [2022-01-11 07:42:32,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:32,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3715 states and 4966 transitions. [2022-01-11 07:42:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:32,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:32,126 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] [2022-01-11 07:42:32,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 07:42:32,126 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:32,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:32,127 INFO L85 PathProgramCache]: Analyzing trace with hash 362197400, now seen corresponding path program 1 times [2022-01-11 07:42:32,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:32,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006074925] [2022-01-11 07:42:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:32,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:32,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:32,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:32,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006074925] [2022-01-11 07:42:32,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006074925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:32,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:32,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:42:32,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469675865] [2022-01-11 07:42:32,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:32,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:42:32,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:32,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:42:32,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:42:32,161 INFO L87 Difference]: Start difference. First operand 3715 states and 4966 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:32,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:32,374 INFO L93 Difference]: Finished difference Result 5280 states and 7050 transitions. [2022-01-11 07:42:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:42:32,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:32,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:32,380 INFO L225 Difference]: With dead ends: 5280 [2022-01-11 07:42:32,380 INFO L226 Difference]: Without dead ends: 4335 [2022-01-11 07:42:32,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:42:32,382 INFO L933 BasicCegarLoop]: 943 mSDtfsCounter, 1811 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:32,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1811 Valid, 2872 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4335 states. [2022-01-11 07:42:32,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4335 to 3721. [2022-01-11 07:42:32,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 3717 states have (on average 1.3338714016680118) internal successors, (4958), 3720 states have internal predecessors, (4958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:32,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 4958 transitions. [2022-01-11 07:42:32,516 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 4958 transitions. Word has length 88 [2022-01-11 07:42:32,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:32,516 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 4958 transitions. [2022-01-11 07:42:32,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:32,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 4958 transitions. [2022-01-11 07:42:32,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:32,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:32,519 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] [2022-01-11 07:42:32,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 07:42:32,519 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:32,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:32,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1961830439, now seen corresponding path program 1 times [2022-01-11 07:42:32,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:32,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109113366] [2022-01-11 07:42:32,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:32,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:32,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:32,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109113366] [2022-01-11 07:42:32,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109113366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:32,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:32,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:42:32,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700989645] [2022-01-11 07:42:32,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:32,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:42:32,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:32,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:42:32,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:42:32,555 INFO L87 Difference]: Start difference. First operand 3721 states and 4958 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:32,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:32,809 INFO L93 Difference]: Finished difference Result 5361 states and 7112 transitions. [2022-01-11 07:42:32,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:42:32,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:32,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:32,816 INFO L225 Difference]: With dead ends: 5361 [2022-01-11 07:42:32,816 INFO L226 Difference]: Without dead ends: 4417 [2022-01-11 07:42:32,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:42:32,818 INFO L933 BasicCegarLoop]: 917 mSDtfsCounter, 1697 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:32,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1697 Valid, 3007 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:42:32,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4417 states. [2022-01-11 07:42:32,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4417 to 3727. [2022-01-11 07:42:33,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 3723 states have (on average 1.3295729250604351) internal successors, (4950), 3726 states have internal predecessors, (4950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 4950 transitions. [2022-01-11 07:42:33,007 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 4950 transitions. Word has length 88 [2022-01-11 07:42:33,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:33,007 INFO L470 AbstractCegarLoop]: Abstraction has 3727 states and 4950 transitions. [2022-01-11 07:42:33,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 4950 transitions. [2022-01-11 07:42:33,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:33,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:33,010 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] [2022-01-11 07:42:33,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 07:42:33,010 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:33,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:33,010 INFO L85 PathProgramCache]: Analyzing trace with hash 397476570, now seen corresponding path program 1 times [2022-01-11 07:42:33,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:33,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704123356] [2022-01-11 07:42:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:33,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:33,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:33,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:33,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704123356] [2022-01-11 07:42:33,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704123356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:33,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:33,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:33,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905157347] [2022-01-11 07:42:33,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:33,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:33,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:33,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:33,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:33,041 INFO L87 Difference]: Start difference. First operand 3727 states and 4950 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:33,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:33,173 INFO L93 Difference]: Finished difference Result 4712 states and 6207 transitions. [2022-01-11 07:42:33,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:33,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:33,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:33,179 INFO L225 Difference]: With dead ends: 4712 [2022-01-11 07:42:33,179 INFO L226 Difference]: Without dead ends: 3727 [2022-01-11 07:42:33,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:33,181 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 831 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:33,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 891 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:33,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2022-01-11 07:42:33,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 3727. [2022-01-11 07:42:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 3723 states have (on average 1.3274241203330648) internal successors, (4942), 3726 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:33,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 4942 transitions. [2022-01-11 07:42:33,336 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 4942 transitions. Word has length 88 [2022-01-11 07:42:33,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:33,336 INFO L470 AbstractCegarLoop]: Abstraction has 3727 states and 4942 transitions. [2022-01-11 07:42:33,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 4942 transitions. [2022-01-11 07:42:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:33,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:33,339 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] [2022-01-11 07:42:33,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 07:42:33,339 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:33,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:33,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1642241051, now seen corresponding path program 1 times [2022-01-11 07:42:33,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:33,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352268933] [2022-01-11 07:42:33,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:33,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:33,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:33,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:33,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352268933] [2022-01-11 07:42:33,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352268933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:33,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:33,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:33,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816815460] [2022-01-11 07:42:33,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:33,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:33,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:33,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:33,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:33,367 INFO L87 Difference]: Start difference. First operand 3727 states and 4942 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:33,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:33,548 INFO L93 Difference]: Finished difference Result 5583 states and 7302 transitions. [2022-01-11 07:42:33,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:33,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:42:33,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:33,556 INFO L225 Difference]: With dead ends: 5583 [2022-01-11 07:42:33,556 INFO L226 Difference]: Without dead ends: 4607 [2022-01-11 07:42:33,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:33,558 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 773 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:33,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 1472 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4607 states. [2022-01-11 07:42:33,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4607 to 4525. [2022-01-11 07:42:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4525 states, 4521 states have (on average 1.3147533731475338) internal successors, (5944), 4524 states have internal predecessors, (5944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:33,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4525 states to 4525 states and 5944 transitions. [2022-01-11 07:42:33,735 INFO L78 Accepts]: Start accepts. Automaton has 4525 states and 5944 transitions. Word has length 88 [2022-01-11 07:42:33,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:33,735 INFO L470 AbstractCegarLoop]: Abstraction has 4525 states and 5944 transitions. [2022-01-11 07:42:33,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:33,735 INFO L276 IsEmpty]: Start isEmpty. Operand 4525 states and 5944 transitions. [2022-01-11 07:42:33,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-11 07:42:33,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:33,739 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:33,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 07:42:33,739 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:33,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:33,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2098484096, now seen corresponding path program 1 times [2022-01-11 07:42:33,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:33,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686562999] [2022-01-11 07:42:33,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:33,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 07:42:33,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:33,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686562999] [2022-01-11 07:42:33,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686562999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:33,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:33,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:33,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165238284] [2022-01-11 07:42:33,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:33,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:33,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:33,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:33,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:33,771 INFO L87 Difference]: Start difference. First operand 4525 states and 5944 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:34,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:34,032 INFO L93 Difference]: Finished difference Result 9605 states and 12828 transitions. [2022-01-11 07:42:34,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:34,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 103 [2022-01-11 07:42:34,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:34,045 INFO L225 Difference]: With dead ends: 9605 [2022-01-11 07:42:34,045 INFO L226 Difference]: Without dead ends: 7065 [2022-01-11 07:42:34,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:34,050 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 131 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:34,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 1735 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:34,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7065 states. [2022-01-11 07:42:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7065 to 7061. [2022-01-11 07:42:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 7057 states have (on average 1.320674507581125) internal successors, (9320), 7060 states have internal predecessors, (9320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:34,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9320 transitions. [2022-01-11 07:42:34,353 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9320 transitions. Word has length 103 [2022-01-11 07:42:34,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:34,353 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9320 transitions. [2022-01-11 07:42:34,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:34,353 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9320 transitions. [2022-01-11 07:42:34,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-11 07:42:34,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:34,359 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:34,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 07:42:34,359 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:34,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:34,360 INFO L85 PathProgramCache]: Analyzing trace with hash -112284167, now seen corresponding path program 1 times [2022-01-11 07:42:34,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:34,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028568179] [2022-01-11 07:42:34,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:34,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:34,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:34,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028568179] [2022-01-11 07:42:34,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028568179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:34,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:34,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:34,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581885706] [2022-01-11 07:42:34,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:34,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:34,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:34,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:34,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:34,390 INFO L87 Difference]: Start difference. First operand 7061 states and 9320 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:34,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:34,643 INFO L93 Difference]: Finished difference Result 9629 states and 12824 transitions. [2022-01-11 07:42:34,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:34,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-11 07:42:34,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:34,646 INFO L225 Difference]: With dead ends: 9629 [2022-01-11 07:42:34,646 INFO L226 Difference]: Without dead ends: 1800 [2022-01-11 07:42:34,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:34,653 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 112 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:34,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1857 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:34,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2022-01-11 07:42:34,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1800. [2022-01-11 07:42:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1798 states have (on average 1.2647385984427142) internal successors, (2274), 1799 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:34,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2274 transitions. [2022-01-11 07:42:34,739 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2274 transitions. Word has length 104 [2022-01-11 07:42:34,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:34,739 INFO L470 AbstractCegarLoop]: Abstraction has 1800 states and 2274 transitions. [2022-01-11 07:42:34,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2274 transitions. [2022-01-11 07:42:34,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 07:42:34,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:34,740 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:34,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 07:42:34,741 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:34,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:34,741 INFO L85 PathProgramCache]: Analyzing trace with hash 39002452, now seen corresponding path program 1 times [2022-01-11 07:42:34,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:34,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199525339] [2022-01-11 07:42:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:34,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:34,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:34,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199525339] [2022-01-11 07:42:34,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199525339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:34,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:34,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:34,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755000838] [2022-01-11 07:42:34,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:34,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:34,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:34,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:34,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:34,789 INFO L87 Difference]: Start difference. First operand 1800 states and 2274 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:35,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:35,026 INFO L93 Difference]: Finished difference Result 5222 states and 6617 transitions. [2022-01-11 07:42:35,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:35,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 07:42:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:35,032 INFO L225 Difference]: With dead ends: 5222 [2022-01-11 07:42:35,033 INFO L226 Difference]: Without dead ends: 3454 [2022-01-11 07:42:35,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:35,036 INFO L933 BasicCegarLoop]: 688 mSDtfsCounter, 606 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:35,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1276 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:35,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2022-01-11 07:42:35,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 3294. [2022-01-11 07:42:35,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3294 states, 3292 states have (on average 1.2630619684082625) internal successors, (4158), 3293 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3294 states to 3294 states and 4158 transitions. [2022-01-11 07:42:35,251 INFO L78 Accepts]: Start accepts. Automaton has 3294 states and 4158 transitions. Word has length 142 [2022-01-11 07:42:35,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:35,251 INFO L470 AbstractCegarLoop]: Abstraction has 3294 states and 4158 transitions. [2022-01-11 07:42:35,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:35,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3294 states and 4158 transitions. [2022-01-11 07:42:35,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 07:42:35,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:35,254 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:35,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 07:42:35,254 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:35,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:35,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1970405139, now seen corresponding path program 1 times [2022-01-11 07:42:35,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:35,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017706439] [2022-01-11 07:42:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:35,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:35,302 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:35,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:35,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017706439] [2022-01-11 07:42:35,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017706439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:35,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:35,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:35,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977535641] [2022-01-11 07:42:35,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:35,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:35,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:35,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:35,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:35,304 INFO L87 Difference]: Start difference. First operand 3294 states and 4158 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:35,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:35,618 INFO L93 Difference]: Finished difference Result 9619 states and 12072 transitions. [2022-01-11 07:42:35,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:35,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 07:42:35,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:35,627 INFO L225 Difference]: With dead ends: 9619 [2022-01-11 07:42:35,627 INFO L226 Difference]: Without dead ends: 6403 [2022-01-11 07:42:35,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:35,632 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 609 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:35,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 1508 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:35,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6403 states. [2022-01-11 07:42:35,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6403 to 6259. [2022-01-11 07:42:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6259 states, 6257 states have (on average 1.2462841617388525) internal successors, (7798), 6258 states have internal predecessors, (7798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:35,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6259 states to 6259 states and 7798 transitions. [2022-01-11 07:42:35,958 INFO L78 Accepts]: Start accepts. Automaton has 6259 states and 7798 transitions. Word has length 142 [2022-01-11 07:42:35,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:35,959 INFO L470 AbstractCegarLoop]: Abstraction has 6259 states and 7798 transitions. [2022-01-11 07:42:35,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:35,959 INFO L276 IsEmpty]: Start isEmpty. Operand 6259 states and 7798 transitions. [2022-01-11 07:42:35,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 07:42:35,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:35,961 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:35,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 07:42:35,962 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:35,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:35,962 INFO L85 PathProgramCache]: Analyzing trace with hash -592321228, now seen corresponding path program 1 times [2022-01-11 07:42:35,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:35,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711588521] [2022-01-11 07:42:35,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:35,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:42:35,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:35,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711588521] [2022-01-11 07:42:35,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711588521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:35,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:35,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:35,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659023859] [2022-01-11 07:42:35,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:35,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:35,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:35,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:35,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:35,984 INFO L87 Difference]: Start difference. First operand 6259 states and 7798 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:36,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:36,269 INFO L93 Difference]: Finished difference Result 12411 states and 15472 transitions. [2022-01-11 07:42:36,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:36,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 142 [2022-01-11 07:42:36,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:36,276 INFO L225 Difference]: With dead ends: 12411 [2022-01-11 07:42:36,276 INFO L226 Difference]: Without dead ends: 6188 [2022-01-11 07:42:36,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:36,283 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 692 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:36,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 698 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:36,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6188 states. [2022-01-11 07:42:36,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6188 to 6188. [2022-01-11 07:42:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6188 states, 6186 states have (on average 1.2471710313611382) internal successors, (7715), 6187 states have internal predecessors, (7715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6188 states to 6188 states and 7715 transitions. [2022-01-11 07:42:36,615 INFO L78 Accepts]: Start accepts. Automaton has 6188 states and 7715 transitions. Word has length 142 [2022-01-11 07:42:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:36,615 INFO L470 AbstractCegarLoop]: Abstraction has 6188 states and 7715 transitions. [2022-01-11 07:42:36,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:36,616 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states and 7715 transitions. [2022-01-11 07:42:36,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 07:42:36,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:36,618 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:36,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 07:42:36,618 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:36,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:36,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1095339854, now seen corresponding path program 1 times [2022-01-11 07:42:36,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:36,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975015071] [2022-01-11 07:42:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:36,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:36,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:36,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975015071] [2022-01-11 07:42:36,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975015071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:36,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:36,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:36,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504442264] [2022-01-11 07:42:36,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:36,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:36,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:36,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:36,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:36,714 INFO L87 Difference]: Start difference. First operand 6188 states and 7715 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:37,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:37,267 INFO L93 Difference]: Finished difference Result 17574 states and 21863 transitions. [2022-01-11 07:42:37,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:37,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-11 07:42:37,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:37,279 INFO L225 Difference]: With dead ends: 17574 [2022-01-11 07:42:37,279 INFO L226 Difference]: Without dead ends: 11464 [2022-01-11 07:42:37,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:37,285 INFO L933 BasicCegarLoop]: 955 mSDtfsCounter, 487 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:37,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 1632 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:37,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2022-01-11 07:42:37,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 11460. [2022-01-11 07:42:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11460 states, 11458 states have (on average 1.238872403560831) internal successors, (14195), 11459 states have internal predecessors, (14195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:37,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11460 states to 11460 states and 14195 transitions. [2022-01-11 07:42:37,844 INFO L78 Accepts]: Start accepts. Automaton has 11460 states and 14195 transitions. Word has length 143 [2022-01-11 07:42:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:37,844 INFO L470 AbstractCegarLoop]: Abstraction has 11460 states and 14195 transitions. [2022-01-11 07:42:37,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:37,845 INFO L276 IsEmpty]: Start isEmpty. Operand 11460 states and 14195 transitions. [2022-01-11 07:42:37,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 07:42:37,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:37,848 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:37,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 07:42:37,849 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:37,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:37,849 INFO L85 PathProgramCache]: Analyzing trace with hash -843199443, now seen corresponding path program 1 times [2022-01-11 07:42:37,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:37,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479360948] [2022-01-11 07:42:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:37,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:42:37,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:37,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479360948] [2022-01-11 07:42:37,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479360948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:37,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:37,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:37,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785373035] [2022-01-11 07:42:37,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:37,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:37,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:37,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:37,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:37,875 INFO L87 Difference]: Start difference. First operand 11460 states and 14195 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:38,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:38,466 INFO L93 Difference]: Finished difference Result 22772 states and 28221 transitions. [2022-01-11 07:42:38,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:38,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 143 [2022-01-11 07:42:38,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:38,482 INFO L225 Difference]: With dead ends: 22772 [2022-01-11 07:42:38,482 INFO L226 Difference]: Without dead ends: 11390 [2022-01-11 07:42:38,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:38,495 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 690 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:38,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 697 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:38,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11390 states. [2022-01-11 07:42:39,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11390 to 11390. [2022-01-11 07:42:39,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11390 states, 11388 states have (on average 1.239374780470671) internal successors, (14114), 11389 states have internal predecessors, (14114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:39,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11390 states to 11390 states and 14114 transitions. [2022-01-11 07:42:39,258 INFO L78 Accepts]: Start accepts. Automaton has 11390 states and 14114 transitions. Word has length 143 [2022-01-11 07:42:39,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:39,258 INFO L470 AbstractCegarLoop]: Abstraction has 11390 states and 14114 transitions. [2022-01-11 07:42:39,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:39,258 INFO L276 IsEmpty]: Start isEmpty. Operand 11390 states and 14114 transitions. [2022-01-11 07:42:39,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-11 07:42:39,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:39,263 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:39,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 07:42:39,263 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:39,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:39,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1226551512, now seen corresponding path program 1 times [2022-01-11 07:42:39,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:39,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585545066] [2022-01-11 07:42:39,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:39,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:39,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:39,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585545066] [2022-01-11 07:42:39,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585545066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:39,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:39,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:39,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909148747] [2022-01-11 07:42:39,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:39,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:39,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:39,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:39,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:39,303 INFO L87 Difference]: Start difference. First operand 11390 states and 14114 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:40,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:40,372 INFO L93 Difference]: Finished difference Result 32467 states and 40196 transitions. [2022-01-11 07:42:40,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:40,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2022-01-11 07:42:40,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:40,398 INFO L225 Difference]: With dead ends: 32467 [2022-01-11 07:42:40,398 INFO L226 Difference]: Without dead ends: 21155 [2022-01-11 07:42:40,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:40,412 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 492 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:40,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 1599 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:40,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21155 states. [2022-01-11 07:42:41,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21155 to 21151. [2022-01-11 07:42:41,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21151 states, 21149 states have (on average 1.234668305830063) internal successors, (26112), 21150 states have internal predecessors, (26112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21151 states to 21151 states and 26112 transitions. [2022-01-11 07:42:41,564 INFO L78 Accepts]: Start accepts. Automaton has 21151 states and 26112 transitions. Word has length 144 [2022-01-11 07:42:41,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:41,564 INFO L470 AbstractCegarLoop]: Abstraction has 21151 states and 26112 transitions. [2022-01-11 07:42:41,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:41,564 INFO L276 IsEmpty]: Start isEmpty. Operand 21151 states and 26112 transitions. [2022-01-11 07:42:41,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-11 07:42:41,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:41,571 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:41,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 07:42:41,571 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:41,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:41,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1129876487, now seen corresponding path program 1 times [2022-01-11 07:42:41,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:41,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211236530] [2022-01-11 07:42:41,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:41,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:42:41,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:41,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211236530] [2022-01-11 07:42:41,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211236530] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:41,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:41,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:41,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368238457] [2022-01-11 07:42:41,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:41,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:41,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:41,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:41,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:41,601 INFO L87 Difference]: Start difference. First operand 21151 states and 26112 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:42,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:42,717 INFO L93 Difference]: Finished difference Result 42155 states and 52058 transitions. [2022-01-11 07:42:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:42,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 144 [2022-01-11 07:42:42,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:42,745 INFO L225 Difference]: With dead ends: 42155 [2022-01-11 07:42:42,746 INFO L226 Difference]: Without dead ends: 21082 [2022-01-11 07:42:42,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:42,765 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 688 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:42,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 696 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:42,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21082 states. [2022-01-11 07:42:44,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21082 to 21082. [2022-01-11 07:42:44,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21082 states, 21080 states have (on average 1.2349620493358633) internal successors, (26033), 21081 states have internal predecessors, (26033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:44,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21082 states to 21082 states and 26033 transitions. [2022-01-11 07:42:44,192 INFO L78 Accepts]: Start accepts. Automaton has 21082 states and 26033 transitions. Word has length 144 [2022-01-11 07:42:44,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:44,193 INFO L470 AbstractCegarLoop]: Abstraction has 21082 states and 26033 transitions. [2022-01-11 07:42:44,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:44,194 INFO L276 IsEmpty]: Start isEmpty. Operand 21082 states and 26033 transitions. [2022-01-11 07:42:44,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-11 07:42:44,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:44,203 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:44,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 07:42:44,203 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:44,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:44,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1790476349, now seen corresponding path program 1 times [2022-01-11 07:42:44,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:44,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904990790] [2022-01-11 07:42:44,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:44,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:44,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:44,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904990790] [2022-01-11 07:42:44,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904990790] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:44,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:44,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:44,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305664749] [2022-01-11 07:42:44,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:44,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:44,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:44,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:44,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:44,272 INFO L87 Difference]: Start difference. First operand 21082 states and 26033 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:46,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:46,400 INFO L93 Difference]: Finished difference Result 60702 states and 74945 transitions. [2022-01-11 07:42:46,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:46,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2022-01-11 07:42:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:46,463 INFO L225 Difference]: With dead ends: 60702 [2022-01-11 07:42:46,464 INFO L226 Difference]: Without dead ends: 39698 [2022-01-11 07:42:46,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:46,486 INFO L933 BasicCegarLoop]: 845 mSDtfsCounter, 608 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:46,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1510 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:46,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39698 states. [2022-01-11 07:42:48,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39698 to 38990. [2022-01-11 07:42:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38990 states, 38988 states have (on average 1.2314814814814814) internal successors, (48013), 38989 states have internal predecessors, (48013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:48,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38990 states to 38990 states and 48013 transitions. [2022-01-11 07:42:48,901 INFO L78 Accepts]: Start accepts. Automaton has 38990 states and 48013 transitions. Word has length 145 [2022-01-11 07:42:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:48,902 INFO L470 AbstractCegarLoop]: Abstraction has 38990 states and 48013 transitions. [2022-01-11 07:42:48,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:48,902 INFO L276 IsEmpty]: Start isEmpty. Operand 38990 states and 48013 transitions. [2022-01-11 07:42:48,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-11 07:42:48,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:48,914 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:48,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 07:42:48,914 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:48,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:48,915 INFO L85 PathProgramCache]: Analyzing trace with hash -150996966, now seen corresponding path program 1 times [2022-01-11 07:42:48,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:48,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262744314] [2022-01-11 07:42:48,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:48,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:42:48,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:48,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262744314] [2022-01-11 07:42:48,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262744314] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:48,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:48,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:48,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107121191] [2022-01-11 07:42:48,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:48,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:48,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:48,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:48,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:48,943 INFO L87 Difference]: Start difference. First operand 38990 states and 48013 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:51,453 INFO L93 Difference]: Finished difference Result 77855 states and 95886 transitions. [2022-01-11 07:42:51,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:51,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 145 [2022-01-11 07:42:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:51,527 INFO L225 Difference]: With dead ends: 77855 [2022-01-11 07:42:51,527 INFO L226 Difference]: Without dead ends: 38922 [2022-01-11 07:42:51,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:51,561 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 686 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:51,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 695 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:51,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38922 states. [2022-01-11 07:42:54,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38922 to 38922. [2022-01-11 07:42:54,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38922 states, 38920 states have (on average 1.2316546762589928) internal successors, (47936), 38921 states have internal predecessors, (47936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:54,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38922 states to 38922 states and 47936 transitions. [2022-01-11 07:42:54,243 INFO L78 Accepts]: Start accepts. Automaton has 38922 states and 47936 transitions. Word has length 145 [2022-01-11 07:42:54,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:54,244 INFO L470 AbstractCegarLoop]: Abstraction has 38922 states and 47936 transitions. [2022-01-11 07:42:54,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:54,244 INFO L276 IsEmpty]: Start isEmpty. Operand 38922 states and 47936 transitions. [2022-01-11 07:42:54,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-11 07:42:54,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:54,252 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:54,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-11 07:42:54,252 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:42:54,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:54,252 INFO L85 PathProgramCache]: Analyzing trace with hash 304839252, now seen corresponding path program 1 times [2022-01-11 07:42:54,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:54,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591189259] [2022-01-11 07:42:54,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:54,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:54,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:54,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591189259] [2022-01-11 07:42:54,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591189259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:54,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:54,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:54,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270855694] [2022-01-11 07:42:54,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:54,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:54,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:54,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:54,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:54,284 INFO L87 Difference]: Start difference. First operand 38922 states and 47936 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:58,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:58,421 INFO L93 Difference]: Finished difference Result 110725 states and 136222 transitions. [2022-01-11 07:42:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:58,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-01-11 07:42:58,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:58,516 INFO L225 Difference]: With dead ends: 110725 [2022-01-11 07:42:58,516 INFO L226 Difference]: Without dead ends: 71881 [2022-01-11 07:42:58,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:58,552 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 608 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:58,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1450 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:58,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71881 states. [2022-01-11 07:43:02,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71881 to 71365. [2022-01-11 07:43:03,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71365 states, 71363 states have (on average 1.2290122332301052) internal successors, (87706), 71364 states have internal predecessors, (87706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71365 states to 71365 states and 87706 transitions. [2022-01-11 07:43:03,310 INFO L78 Accepts]: Start accepts. Automaton has 71365 states and 87706 transitions. Word has length 146 [2022-01-11 07:43:03,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:43:03,310 INFO L470 AbstractCegarLoop]: Abstraction has 71365 states and 87706 transitions. [2022-01-11 07:43:03,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:03,310 INFO L276 IsEmpty]: Start isEmpty. Operand 71365 states and 87706 transitions. [2022-01-11 07:43:03,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-11 07:43:03,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:43:03,339 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:43:03,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-11 07:43:03,339 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:43:03,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:43:03,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1856563851, now seen corresponding path program 1 times [2022-01-11 07:43:03,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:43:03,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151933804] [2022-01-11 07:43:03,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:43:03,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:43:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:43:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:43:03,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:43:03,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151933804] [2022-01-11 07:43:03,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151933804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:43:03,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:43:03,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:43:03,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451801093] [2022-01-11 07:43:03,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:43:03,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:43:03,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:43:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:43:03,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:43:03,376 INFO L87 Difference]: Start difference. First operand 71365 states and 87706 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:07,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:43:07,964 INFO L93 Difference]: Finished difference Result 142599 states and 175266 transitions. [2022-01-11 07:43:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:43:07,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 146 [2022-01-11 07:43:07,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:43:08,099 INFO L225 Difference]: With dead ends: 142599 [2022-01-11 07:43:08,099 INFO L226 Difference]: Without dead ends: 71298 [2022-01-11 07:43:08,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:43:08,195 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 684 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:43:08,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 694 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:43:08,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71298 states. [2022-01-11 07:43:12,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71298 to 71298. [2022-01-11 07:43:12,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71298 states, 71296 states have (on average 1.229115237881508) internal successors, (87631), 71297 states have internal predecessors, (87631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:13,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71298 states to 71298 states and 87631 transitions. [2022-01-11 07:43:13,058 INFO L78 Accepts]: Start accepts. Automaton has 71298 states and 87631 transitions. Word has length 146 [2022-01-11 07:43:13,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:43:13,058 INFO L470 AbstractCegarLoop]: Abstraction has 71298 states and 87631 transitions. [2022-01-11 07:43:13,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 71298 states and 87631 transitions. [2022-01-11 07:43:13,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-11 07:43:13,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:43:13,091 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:43:13,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-11 07:43:13,092 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:43:13,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:43:13,095 INFO L85 PathProgramCache]: Analyzing trace with hash -249982187, now seen corresponding path program 1 times [2022-01-11 07:43:13,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:43:13,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922486233] [2022-01-11 07:43:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:43:13,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:43:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:43:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:43:13,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:43:13,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922486233] [2022-01-11 07:43:13,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922486233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:43:13,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:43:13,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:43:13,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404009132] [2022-01-11 07:43:13,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:43:13,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:43:13,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:43:13,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:43:13,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:43:13,129 INFO L87 Difference]: Start difference. First operand 71298 states and 87631 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:19,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:43:19,897 INFO L93 Difference]: Finished difference Result 142934 states and 176073 transitions. [2022-01-11 07:43:19,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:43:19,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2022-01-11 07:43:19,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:43:20,076 INFO L225 Difference]: With dead ends: 142934 [2022-01-11 07:43:20,076 INFO L226 Difference]: Without dead ends: 103434 [2022-01-11 07:43:20,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:43:20,139 INFO L933 BasicCegarLoop]: 1203 mSDtfsCounter, 516 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:43:20,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 1883 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:43:20,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103434 states. [2022-01-11 07:43:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103434 to 103434. [2022-01-11 07:43:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103434 states, 103432 states have (on average 1.2230934333668497) internal successors, (126507), 103433 states have internal predecessors, (126507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:27,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103434 states to 103434 states and 126507 transitions. [2022-01-11 07:43:27,285 INFO L78 Accepts]: Start accepts. Automaton has 103434 states and 126507 transitions. Word has length 147 [2022-01-11 07:43:27,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:43:27,285 INFO L470 AbstractCegarLoop]: Abstraction has 103434 states and 126507 transitions. [2022-01-11 07:43:27,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:27,285 INFO L276 IsEmpty]: Start isEmpty. Operand 103434 states and 126507 transitions. [2022-01-11 07:43:27,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-11 07:43:27,350 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:43:27,350 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:43:27,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-11 07:43:27,351 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:43:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:43:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1344819708, now seen corresponding path program 1 times [2022-01-11 07:43:27,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:43:27,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812287837] [2022-01-11 07:43:27,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:43:27,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:43:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:43:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:43:27,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:43:27,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812287837] [2022-01-11 07:43:27,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812287837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:43:27,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:43:27,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:43:27,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342659131] [2022-01-11 07:43:27,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:43:27,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:43:27,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:43:27,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:43:27,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:43:27,397 INFO L87 Difference]: Start difference. First operand 103434 states and 126507 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)