/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:50:59,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:50:59,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:50:59,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 01:50:59,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 01:50:59,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 01:50:59,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 01:50:59,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 01:50:59,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 01:50:59,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 01:50:59,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 01:50:59,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 01:50:59,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:50:59,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:50:59,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:50:59,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:50:59,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:50:59,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:50:59,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:50:59,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:50:59,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:50:59,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:50:59,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:50:59,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:50:59,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 01:50:59,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 01:50:59,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 01:50:59,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 01:50:59,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 01:50:59,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 01:50:59,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 01:50:59,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 01:50:59,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 01:50:59,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 01:50:59,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 01:50:59,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 01:50:59,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 01:50:59,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 01:50:59,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:50:59,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:50:59,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:50:59,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 01:50:59,526 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:50:59,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:50:59,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:50:59,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:50:59,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:50:59,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:50:59,528 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:50:59,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:50:59,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:50:59,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:50:59,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:50:59,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:50:59,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:50:59,529 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:50:59,529 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:50:59,529 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:50:59,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:50:59,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:50:59,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:50:59,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:50:59,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:50:59,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:50:59,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:50:59,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:50:59,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:50:59,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:50:59,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:50:59,532 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:50:59,532 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:50:59,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:50:59,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:50:59,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:50:59,533 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:50:59,533 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:50:59,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:50:59,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:50:59,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:50:59,805 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:50:59,806 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:50:59,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c [2022-01-11 01:50:59,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52e5a89dd/05a1df0aab85499bb5bafd971d2e791d/FLAG9b324e0c7 [2022-01-11 01:51:00,295 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:51:00,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c [2022-01-11 01:51:00,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52e5a89dd/05a1df0aab85499bb5bafd971d2e791d/FLAG9b324e0c7 [2022-01-11 01:51:00,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52e5a89dd/05a1df0aab85499bb5bafd971d2e791d [2022-01-11 01:51:00,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:51:00,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:51:00,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:51:00,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:51:00,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:51:00,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:51:00" (1/1) ... [2022-01-11 01:51:00,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5123e4fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:51:00, skipping insertion in model container [2022-01-11 01:51:00,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:51:00" (1/1) ... [2022-01-11 01:51:00,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:51:00,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:51:00,543 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.04.cil-2.c[911,924] [2022-01-11 01:51:00,600 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.04.cil-2.c[8416,8429] [2022-01-11 01:51:00,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:51:00,675 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:51:00,686 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.04.cil-2.c[911,924] [2022-01-11 01:51:00,704 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.04.cil-2.c[8416,8429] [2022-01-11 01:51:00,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:51:00,754 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:51:00,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:51:00 WrapperNode [2022-01-11 01:51:00,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:51:00,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:51:00,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:51:00,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:51:00,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:51:00" (1/1) ... [2022-01-11 01:51:00,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:51:00" (1/1) ... [2022-01-11 01:51:00,868 INFO L137 Inliner]: procedures = 64, calls = 74, calls flagged for inlining = 69, calls inlined = 111, statements flattened = 1478 [2022-01-11 01:51:00,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:51:00,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:51:00,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:51:00,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:51:00,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:51:00" (1/1) ... [2022-01-11 01:51:00,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:51:00" (1/1) ... [2022-01-11 01:51:00,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:51:00" (1/1) ... [2022-01-11 01:51:00,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:51:00" (1/1) ... [2022-01-11 01:51:00,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:51:00" (1/1) ... [2022-01-11 01:51:00,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:51:00" (1/1) ... [2022-01-11 01:51:00,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:51:00" (1/1) ... [2022-01-11 01:51:00,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:51:00,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:51:00,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:51:00,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:51:00,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:51:00" (1/1) ... [2022-01-11 01:51:00,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:51:00,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:51:00,969 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 01:51:01,004 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 01:51:01,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:51:01,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:51:01,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:51:01,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:51:01,146 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:51:01,147 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:51:02,203 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume !(1bv32 == ~q_free~0); [2022-01-11 01:51:02,204 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 01:51:02,205 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:51:02,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:51:02,222 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-11 01:51:02,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:51:02 BoogieIcfgContainer [2022-01-11 01:51:02,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:51:02,226 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:51:02,226 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:51:02,227 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:51:02,230 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:51:02" (1/1) ... [2022-01-11 01:51:02,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:51:02 BasicIcfg [2022-01-11 01:51:02,464 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:51:02,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:51:02,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:51:02,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:51:02,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:51:00" (1/4) ... [2022-01-11 01:51:02,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1849f473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:51:02, skipping insertion in model container [2022-01-11 01:51:02,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:51:00" (2/4) ... [2022-01-11 01:51:02,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1849f473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:51:02, skipping insertion in model container [2022-01-11 01:51:02,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:51:02" (3/4) ... [2022-01-11 01:51:02,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1849f473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:51:02, skipping insertion in model container [2022-01-11 01:51:02,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:51:02" (4/4) ... [2022-01-11 01:51:02,471 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.04.cil-2.cTransformedIcfg [2022-01-11 01:51:02,477 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:51:02,477 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-11 01:51:02,528 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:51:02,534 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 01:51:02,534 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-11 01:51:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 582 states, 577 states have (on average 1.5511265164644714) internal successors, (895), 581 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 01:51:02,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 01:51:02,564 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:02,564 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 01:51:02,565 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 01:51:02,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1316978989, now seen corresponding path program 1 times [2022-01-11 01:51:02,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:02,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321255444] [2022-01-11 01:51:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:02,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:02,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:51:02,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:02,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321255444] [2022-01-11 01:51:02,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321255444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:02,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:02,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:02,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734261909] [2022-01-11 01:51:02,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:02,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:02,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:02,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:02,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:02,910 INFO L87 Difference]: Start difference. First operand has 582 states, 577 states have (on average 1.5511265164644714) internal successors, (895), 581 states have internal predecessors, (895), 0 states have call successors, (0), 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 01:51:03,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:03,107 INFO L93 Difference]: Finished difference Result 1219 states and 1874 transitions. [2022-01-11 01:51:03,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:03,115 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 01:51:03,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:03,133 INFO L225 Difference]: With dead ends: 1219 [2022-01-11 01:51:03,134 INFO L226 Difference]: Without dead ends: 704 [2022-01-11 01:51:03,143 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 01:51:03,148 INFO L933 BasicCegarLoop]: 859 mSDtfsCounter, 185 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1686 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 01:51:03,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 1686 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:51:03,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-01-11 01:51:03,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 700. [2022-01-11 01:51:03,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 696 states have (on average 1.4942528735632183) internal successors, (1040), 699 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states 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 01:51:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1040 transitions. [2022-01-11 01:51:03,248 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1040 transitions. Word has length 44 [2022-01-11 01:51:03,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:03,249 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 1040 transitions. [2022-01-11 01:51:03,249 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 01:51:03,249 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1040 transitions. [2022-01-11 01:51:03,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 01:51:03,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:03,255 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 01:51:03,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:51:03,256 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 01:51:03,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:03,257 INFO L85 PathProgramCache]: Analyzing trace with hash 180697811, now seen corresponding path program 1 times [2022-01-11 01:51:03,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:03,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275146832] [2022-01-11 01:51:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:03,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:03,411 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 01:51:03,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:03,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275146832] [2022-01-11 01:51:03,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275146832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:03,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:03,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:03,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440848296] [2022-01-11 01:51:03,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:03,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:03,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:03,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:03,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:03,415 INFO L87 Difference]: Start difference. First operand 700 states and 1040 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 01:51:03,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:03,468 INFO L93 Difference]: Finished difference Result 1118 states and 1645 transitions. [2022-01-11 01:51:03,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:03,468 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 01:51:03,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:03,471 INFO L225 Difference]: With dead ends: 1118 [2022-01-11 01:51:03,471 INFO L226 Difference]: Without dead ends: 878 [2022-01-11 01:51:03,472 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 01:51:03,473 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 818 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 979 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 01:51:03,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 979 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:03,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-11 01:51:03,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 870. [2022-01-11 01:51:03,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 866 states have (on average 1.4722863741339491) internal successors, (1275), 869 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states 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 01:51:03,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1275 transitions. [2022-01-11 01:51:03,508 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1275 transitions. Word has length 44 [2022-01-11 01:51:03,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:03,509 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 1275 transitions. [2022-01-11 01:51:03,509 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 01:51:03,512 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1275 transitions. [2022-01-11 01:51:03,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-11 01:51:03,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:03,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:51:03,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:51:03,520 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 01:51:03,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:03,520 INFO L85 PathProgramCache]: Analyzing trace with hash 438997292, now seen corresponding path program 1 times [2022-01-11 01:51:03,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:03,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343814639] [2022-01-11 01:51:03,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:03,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:03,583 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 01:51:03,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:03,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343814639] [2022-01-11 01:51:03,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343814639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:03,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:03,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:03,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357548503] [2022-01-11 01:51:03,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:03,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:03,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:03,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:03,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:03,586 INFO L87 Difference]: Start difference. First operand 870 states and 1275 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 01:51:03,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:03,648 INFO L93 Difference]: Finished difference Result 1592 states and 2309 transitions. [2022-01-11 01:51:03,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:03,649 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 01:51:03,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:03,654 INFO L225 Difference]: With dead ends: 1592 [2022-01-11 01:51:03,654 INFO L226 Difference]: Without dead ends: 1196 [2022-01-11 01:51:03,657 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 01:51:03,658 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 802 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 976 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 01:51:03,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 976 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:03,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-01-11 01:51:03,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1188. [2022-01-11 01:51:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1184 states have (on average 1.4425675675675675) internal successors, (1708), 1187 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states 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 01:51:03,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1708 transitions. [2022-01-11 01:51:03,701 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1708 transitions. Word has length 45 [2022-01-11 01:51:03,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:03,701 INFO L470 AbstractCegarLoop]: Abstraction has 1188 states and 1708 transitions. [2022-01-11 01:51:03,701 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 01:51:03,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1708 transitions. [2022-01-11 01:51:03,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 01:51:03,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:03,703 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 01:51:03,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:51:03,703 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 01:51:03,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:03,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1106917611, now seen corresponding path program 1 times [2022-01-11 01:51:03,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:03,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80548573] [2022-01-11 01:51:03,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:03,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:03,773 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 01:51:03,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:03,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80548573] [2022-01-11 01:51:03,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80548573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:03,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:03,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:03,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126611584] [2022-01-11 01:51:03,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:03,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:03,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:03,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:03,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:03,775 INFO L87 Difference]: Start difference. First operand 1188 states and 1708 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 01:51:03,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:03,858 INFO L93 Difference]: Finished difference Result 2556 states and 3610 transitions. [2022-01-11 01:51:03,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:03,859 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 01:51:03,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:03,866 INFO L225 Difference]: With dead ends: 2556 [2022-01-11 01:51:03,866 INFO L226 Difference]: Without dead ends: 1860 [2022-01-11 01:51:03,868 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 01:51:03,868 INFO L933 BasicCegarLoop]: 841 mSDtfsCounter, 786 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:03,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 1006 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:03,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2022-01-11 01:51:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1856. [2022-01-11 01:51:03,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1852 states have (on average 1.400647948164147) internal successors, (2594), 1855 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states 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 01:51:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2594 transitions. [2022-01-11 01:51:03,940 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2594 transitions. Word has length 59 [2022-01-11 01:51:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:03,941 INFO L470 AbstractCegarLoop]: Abstraction has 1856 states and 2594 transitions. [2022-01-11 01:51:03,941 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 01:51:03,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2594 transitions. [2022-01-11 01:51:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 01:51:03,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:03,944 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 01:51:03,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 01:51:03,944 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 01:51:03,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash -173796239, now seen corresponding path program 1 times [2022-01-11 01:51:03,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:03,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767672020] [2022-01-11 01:51:03,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:03,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:04,018 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 01:51:04,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:04,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767672020] [2022-01-11 01:51:04,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767672020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:04,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:04,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:04,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618108105] [2022-01-11 01:51:04,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:04,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:04,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:04,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:04,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:04,043 INFO L87 Difference]: Start difference. First operand 1856 states and 2594 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 01:51:04,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:04,172 INFO L93 Difference]: Finished difference Result 4480 states and 6176 transitions. [2022-01-11 01:51:04,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:04,172 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 01:51:04,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:04,184 INFO L225 Difference]: With dead ends: 4480 [2022-01-11 01:51:04,184 INFO L226 Difference]: Without dead ends: 3160 [2022-01-11 01:51:04,187 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 01:51:04,188 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 146 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1814 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 01:51:04,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 1814 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:04,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3160 states. [2022-01-11 01:51:04,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3160 to 3160. [2022-01-11 01:51:04,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3160 states, 3156 states have (on average 1.3694550063371356) internal successors, (4322), 3159 states have internal predecessors, (4322), 0 states have call successors, (0), 0 states 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 01:51:04,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 4322 transitions. [2022-01-11 01:51:04,315 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 4322 transitions. Word has length 61 [2022-01-11 01:51:04,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:04,318 INFO L470 AbstractCegarLoop]: Abstraction has 3160 states and 4322 transitions. [2022-01-11 01:51:04,319 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 01:51:04,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 4322 transitions. [2022-01-11 01:51:04,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:51:04,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:04,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:51:04,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 01:51:04,323 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 01:51:04,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:04,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1477058886, now seen corresponding path program 1 times [2022-01-11 01:51:04,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:04,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508213429] [2022-01-11 01:51:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:04,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:04,385 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 01:51:04,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:04,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508213429] [2022-01-11 01:51:04,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508213429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:04,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:04,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:51:04,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590246275] [2022-01-11 01:51:04,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:04,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:04,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:04,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:04,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:04,388 INFO L87 Difference]: Start difference. First operand 3160 states and 4322 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:04,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:04,542 INFO L93 Difference]: Finished difference Result 3913 states and 5447 transitions. [2022-01-11 01:51:04,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:04,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:51:04,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:04,555 INFO L225 Difference]: With dead ends: 3913 [2022-01-11 01:51:04,555 INFO L226 Difference]: Without dead ends: 3490 [2022-01-11 01:51:04,557 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 01:51:04,557 INFO L933 BasicCegarLoop]: 858 mSDtfsCounter, 776 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1395 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 01:51:04,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 1395 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:04,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3490 states. [2022-01-11 01:51:04,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3490 to 3486. [2022-01-11 01:51:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3482 states have (on average 1.3805284319356692) internal successors, (4807), 3485 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states 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 01:51:04,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 4807 transitions. [2022-01-11 01:51:04,710 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 4807 transitions. Word has length 77 [2022-01-11 01:51:04,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:04,711 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 4807 transitions. [2022-01-11 01:51:04,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:04,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 4807 transitions. [2022-01-11 01:51:04,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:51:04,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:04,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:51:04,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 01:51:04,715 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 01:51:04,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:04,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1181349478, now seen corresponding path program 1 times [2022-01-11 01:51:04,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:04,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377704990] [2022-01-11 01:51:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:04,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:04,765 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 01:51:04,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:04,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377704990] [2022-01-11 01:51:04,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377704990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:04,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:04,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:51:04,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346496901] [2022-01-11 01:51:04,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:04,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:04,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:04,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:04,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:04,767 INFO L87 Difference]: Start difference. First operand 3486 states and 4807 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:04,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:04,890 INFO L93 Difference]: Finished difference Result 4234 states and 5925 transitions. [2022-01-11 01:51:04,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:04,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:51:04,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:04,904 INFO L225 Difference]: With dead ends: 4234 [2022-01-11 01:51:04,905 INFO L226 Difference]: Without dead ends: 3486 [2022-01-11 01:51:04,908 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 01:51:04,910 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 826 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 833 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 01:51:04,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 833 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:04,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-01-11 01:51:05,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3486. [2022-01-11 01:51:05,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3482 states have (on average 1.3782309017805858) internal successors, (4799), 3485 states have internal predecessors, (4799), 0 states have call successors, (0), 0 states 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 01:51:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 4799 transitions. [2022-01-11 01:51:05,116 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 4799 transitions. Word has length 77 [2022-01-11 01:51:05,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:05,116 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 4799 transitions. [2022-01-11 01:51:05,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:05,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 4799 transitions. [2022-01-11 01:51:05,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:51:05,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:05,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:51:05,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 01:51:05,121 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 01:51:05,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1876230842, now seen corresponding path program 1 times [2022-01-11 01:51:05,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:05,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145535998] [2022-01-11 01:51:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:05,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:05,166 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 01:51:05,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:05,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145535998] [2022-01-11 01:51:05,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145535998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:05,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:05,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:51:05,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256752177] [2022-01-11 01:51:05,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:05,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:05,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:05,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:05,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:05,169 INFO L87 Difference]: Start difference. First operand 3486 states and 4799 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:05,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:05,315 INFO L93 Difference]: Finished difference Result 4233 states and 5908 transitions. [2022-01-11 01:51:05,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:05,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:51:05,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:05,328 INFO L225 Difference]: With dead ends: 4233 [2022-01-11 01:51:05,328 INFO L226 Difference]: Without dead ends: 3486 [2022-01-11 01:51:05,330 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 01:51:05,331 INFO L933 BasicCegarLoop]: 828 mSDtfsCounter, 820 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 828 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 01:51:05,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [820 Valid, 828 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:05,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-01-11 01:51:05,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3486. [2022-01-11 01:51:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3482 states have (on average 1.3759333716255027) internal successors, (4791), 3485 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states 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 01:51:05,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 4791 transitions. [2022-01-11 01:51:05,502 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 4791 transitions. Word has length 77 [2022-01-11 01:51:05,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:05,503 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 4791 transitions. [2022-01-11 01:51:05,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:05,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 4791 transitions. [2022-01-11 01:51:05,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:51:05,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:05,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:51:05,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 01:51:05,510 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 01:51:05,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:05,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1488820838, now seen corresponding path program 1 times [2022-01-11 01:51:05,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:05,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814956471] [2022-01-11 01:51:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:05,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:05,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:51:05,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:05,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814956471] [2022-01-11 01:51:05,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814956471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:05,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:05,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:51:05,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002334282] [2022-01-11 01:51:05,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:05,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:05,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:05,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:05,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:05,546 INFO L87 Difference]: Start difference. First operand 3486 states and 4791 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:05,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:05,682 INFO L93 Difference]: Finished difference Result 4232 states and 5891 transitions. [2022-01-11 01:51:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:05,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:51:05,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:05,694 INFO L225 Difference]: With dead ends: 4232 [2022-01-11 01:51:05,695 INFO L226 Difference]: Without dead ends: 3486 [2022-01-11 01:51:05,697 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 01:51:05,700 INFO L933 BasicCegarLoop]: 823 mSDtfsCounter, 814 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 823 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 01:51:05,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 823 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:05,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-01-11 01:51:05,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3486. [2022-01-11 01:51:05,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3482 states have (on average 1.3736358414704193) internal successors, (4783), 3485 states have internal predecessors, (4783), 0 states have call successors, (0), 0 states 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 01:51:05,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 4783 transitions. [2022-01-11 01:51:05,855 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 4783 transitions. Word has length 77 [2022-01-11 01:51:05,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:05,856 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 4783 transitions. [2022-01-11 01:51:05,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:05,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 4783 transitions. [2022-01-11 01:51:05,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:51:05,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:05,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:51:05,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 01:51:05,860 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 01:51:05,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:05,860 INFO L85 PathProgramCache]: Analyzing trace with hash -757933754, now seen corresponding path program 1 times [2022-01-11 01:51:05,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:05,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289006099] [2022-01-11 01:51:05,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:05,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:05,898 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 01:51:05,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:05,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289006099] [2022-01-11 01:51:05,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289006099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:05,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:05,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:51:05,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603424543] [2022-01-11 01:51:05,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:05,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:05,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:05,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:05,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:05,901 INFO L87 Difference]: Start difference. First operand 3486 states and 4783 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:06,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:06,054 INFO L93 Difference]: Finished difference Result 4231 states and 5874 transitions. [2022-01-11 01:51:06,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:06,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:51:06,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:06,067 INFO L225 Difference]: With dead ends: 4231 [2022-01-11 01:51:06,067 INFO L226 Difference]: Without dead ends: 3486 [2022-01-11 01:51:06,070 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 01:51:06,070 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 808 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 818 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 01:51:06,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 818 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:06,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-01-11 01:51:06,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3486. [2022-01-11 01:51:06,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3482 states have (on average 1.3713383113153361) internal successors, (4775), 3485 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states 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 01:51:06,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 4775 transitions. [2022-01-11 01:51:06,241 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 4775 transitions. Word has length 77 [2022-01-11 01:51:06,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:06,242 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 4775 transitions. [2022-01-11 01:51:06,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:06,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 4775 transitions. [2022-01-11 01:51:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:51:06,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:06,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:51:06,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 01:51:06,247 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 01:51:06,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1940536934, now seen corresponding path program 1 times [2022-01-11 01:51:06,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:06,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019655243] [2022-01-11 01:51:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:06,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:06,280 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 01:51:06,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:06,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019655243] [2022-01-11 01:51:06,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019655243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:06,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:06,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:51:06,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376972219] [2022-01-11 01:51:06,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:06,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:06,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:06,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:06,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:06,282 INFO L87 Difference]: Start difference. First operand 3486 states and 4775 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:06,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:06,467 INFO L93 Difference]: Finished difference Result 4230 states and 5857 transitions. [2022-01-11 01:51:06,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:06,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:51:06,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:06,479 INFO L225 Difference]: With dead ends: 4230 [2022-01-11 01:51:06,480 INFO L226 Difference]: Without dead ends: 3486 [2022-01-11 01:51:06,482 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 01:51:06,482 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 743 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:06,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 847 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:06,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-01-11 01:51:06,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3486. [2022-01-11 01:51:06,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3482 states have (on average 1.3655944859276279) internal successors, (4755), 3485 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states 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 01:51:06,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 4755 transitions. [2022-01-11 01:51:06,641 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 4755 transitions. Word has length 77 [2022-01-11 01:51:06,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:06,641 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 4755 transitions. [2022-01-11 01:51:06,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:06,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 4755 transitions. [2022-01-11 01:51:06,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:51:06,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:06,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:51:06,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 01:51:06,646 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 01:51:06,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:06,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1934428101, now seen corresponding path program 1 times [2022-01-11 01:51:06,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:06,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825035832] [2022-01-11 01:51:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:06,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:06,674 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 01:51:06,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:06,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825035832] [2022-01-11 01:51:06,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825035832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:06,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:06,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:51:06,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273384517] [2022-01-11 01:51:06,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:06,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:06,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:06,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:06,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:06,677 INFO L87 Difference]: Start difference. First operand 3486 states and 4755 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:06,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:06,873 INFO L93 Difference]: Finished difference Result 4229 states and 5816 transitions. [2022-01-11 01:51:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:06,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:51:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:06,882 INFO L225 Difference]: With dead ends: 4229 [2022-01-11 01:51:06,882 INFO L226 Difference]: Without dead ends: 3486 [2022-01-11 01:51:06,884 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 01:51:06,885 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 731 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:06,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 834 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:06,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-01-11 01:51:07,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3486. [2022-01-11 01:51:07,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3482 states have (on average 1.3598506605399197) internal successors, (4735), 3485 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states 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 01:51:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 4735 transitions. [2022-01-11 01:51:07,085 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 4735 transitions. Word has length 77 [2022-01-11 01:51:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:07,086 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 4735 transitions. [2022-01-11 01:51:07,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 4735 transitions. [2022-01-11 01:51:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:51:07,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:07,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:51:07,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 01:51:07,090 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 01:51:07,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:07,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1190868197, now seen corresponding path program 1 times [2022-01-11 01:51:07,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:07,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920719520] [2022-01-11 01:51:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:07,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:07,128 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 01:51:07,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:07,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920719520] [2022-01-11 01:51:07,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920719520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:07,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:07,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:51:07,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911794285] [2022-01-11 01:51:07,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:07,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:07,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:07,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:07,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:07,130 INFO L87 Difference]: Start difference. First operand 3486 states and 4735 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:07,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:07,304 INFO L93 Difference]: Finished difference Result 4228 states and 5775 transitions. [2022-01-11 01:51:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:07,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:51:07,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:07,314 INFO L225 Difference]: With dead ends: 4228 [2022-01-11 01:51:07,314 INFO L226 Difference]: Without dead ends: 3486 [2022-01-11 01:51:07,316 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 01:51:07,317 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 719 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:07,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 821 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:07,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-01-11 01:51:07,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3486. [2022-01-11 01:51:07,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3482 states have (on average 1.3541068351522114) internal successors, (4715), 3485 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states 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 01:51:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 4715 transitions. [2022-01-11 01:51:07,506 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 4715 transitions. Word has length 77 [2022-01-11 01:51:07,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:07,506 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 4715 transitions. [2022-01-11 01:51:07,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:07,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 4715 transitions. [2022-01-11 01:51:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:51:07,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:07,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:51:07,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 01:51:07,511 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 01:51:07,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:07,511 INFO L85 PathProgramCache]: Analyzing trace with hash 273595588, now seen corresponding path program 1 times [2022-01-11 01:51:07,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:07,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949776263] [2022-01-11 01:51:07,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:07,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:07,539 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 01:51:07,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:07,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949776263] [2022-01-11 01:51:07,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949776263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:07,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:07,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:51:07,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246232163] [2022-01-11 01:51:07,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:07,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:07,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:07,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:07,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:07,541 INFO L87 Difference]: Start difference. First operand 3486 states and 4715 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:07,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:07,705 INFO L93 Difference]: Finished difference Result 4227 states and 5734 transitions. [2022-01-11 01:51:07,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:07,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:51:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:07,711 INFO L225 Difference]: With dead ends: 4227 [2022-01-11 01:51:07,712 INFO L226 Difference]: Without dead ends: 3486 [2022-01-11 01:51:07,713 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 01:51:07,714 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 707 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:07,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 808 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:07,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-01-11 01:51:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3486. [2022-01-11 01:51:07,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3482 states have (on average 1.3483630097645032) internal successors, (4695), 3485 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states 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 01:51:07,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 4695 transitions. [2022-01-11 01:51:07,911 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 4695 transitions. Word has length 77 [2022-01-11 01:51:07,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:07,912 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 4695 transitions. [2022-01-11 01:51:07,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:07,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 4695 transitions. [2022-01-11 01:51:07,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:51:07,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:07,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:51:07,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 01:51:07,916 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 01:51:07,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:07,917 INFO L85 PathProgramCache]: Analyzing trace with hash -368314845, now seen corresponding path program 1 times [2022-01-11 01:51:07,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:07,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998210199] [2022-01-11 01:51:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:07,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:51:07,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:07,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998210199] [2022-01-11 01:51:07,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998210199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:07,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:07,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:51:07,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690086680] [2022-01-11 01:51:07,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:07,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:07,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:07,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:07,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:07,948 INFO L87 Difference]: Start difference. First operand 3486 states and 4695 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:08,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:08,129 INFO L93 Difference]: Finished difference Result 4226 states and 5693 transitions. [2022-01-11 01:51:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:08,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:51:08,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:08,136 INFO L225 Difference]: With dead ends: 4226 [2022-01-11 01:51:08,136 INFO L226 Difference]: Without dead ends: 3486 [2022-01-11 01:51:08,138 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 01:51:08,139 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 695 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:08,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 795 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:08,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-01-11 01:51:08,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3486. [2022-01-11 01:51:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3482 states have (on average 1.342619184376795) internal successors, (4675), 3485 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states 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 01:51:08,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 4675 transitions. [2022-01-11 01:51:08,315 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 4675 transitions. Word has length 77 [2022-01-11 01:51:08,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:08,316 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 4675 transitions. [2022-01-11 01:51:08,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 4675 transitions. [2022-01-11 01:51:08,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:51:08,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:08,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:51:08,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 01:51:08,320 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 01:51:08,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:08,321 INFO L85 PathProgramCache]: Analyzing trace with hash 125041794, now seen corresponding path program 1 times [2022-01-11 01:51:08,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:08,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307512233] [2022-01-11 01:51:08,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:08,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:08,370 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 01:51:08,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:08,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307512233] [2022-01-11 01:51:08,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307512233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:08,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:08,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:51:08,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988374383] [2022-01-11 01:51:08,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:08,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:51:08,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:08,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:51:08,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:51:08,372 INFO L87 Difference]: Start difference. First operand 3486 states and 4675 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:08,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:08,632 INFO L93 Difference]: Finished difference Result 4621 states and 6207 transitions. [2022-01-11 01:51:08,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:51:08,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:51:08,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:08,640 INFO L225 Difference]: With dead ends: 4621 [2022-01-11 01:51:08,640 INFO L226 Difference]: Without dead ends: 3888 [2022-01-11 01:51:08,642 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 01:51:08,643 INFO L933 BasicCegarLoop]: 811 mSDtfsCounter, 1556 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:08,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1556 Valid, 2234 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:51:08,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2022-01-11 01:51:08,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3492. [2022-01-11 01:51:08,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 3488 states have (on average 1.3385894495412844) internal successors, (4669), 3491 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states 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 01:51:08,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 4669 transitions. [2022-01-11 01:51:08,887 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 4669 transitions. Word has length 77 [2022-01-11 01:51:08,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:08,887 INFO L470 AbstractCegarLoop]: Abstraction has 3492 states and 4669 transitions. [2022-01-11 01:51:08,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:08,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 4669 transitions. [2022-01-11 01:51:08,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:51:08,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:08,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:51:08,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 01:51:08,892 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 01:51:08,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:08,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1258232387, now seen corresponding path program 1 times [2022-01-11 01:51:08,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:08,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103722231] [2022-01-11 01:51:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:08,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:08,939 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 01:51:08,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:08,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103722231] [2022-01-11 01:51:08,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103722231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:08,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:08,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:51:08,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007017465] [2022-01-11 01:51:08,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:08,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:51:08,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:08,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:51:08,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:51:08,941 INFO L87 Difference]: Start difference. First operand 3492 states and 4669 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:09,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:09,210 INFO L93 Difference]: Finished difference Result 4737 states and 6322 transitions. [2022-01-11 01:51:09,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:51:09,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:51:09,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:09,219 INFO L225 Difference]: With dead ends: 4737 [2022-01-11 01:51:09,219 INFO L226 Difference]: Without dead ends: 4012 [2022-01-11 01:51:09,222 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 01:51:09,222 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 1362 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:09,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1362 Valid, 2496 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:51:09,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4012 states. [2022-01-11 01:51:09,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4012 to 3498. [2022-01-11 01:51:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3498 states, 3494 states have (on average 1.3345735546651403) internal successors, (4663), 3497 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states 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 01:51:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 4663 transitions. [2022-01-11 01:51:09,430 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 4663 transitions. Word has length 77 [2022-01-11 01:51:09,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:09,430 INFO L470 AbstractCegarLoop]: Abstraction has 3498 states and 4663 transitions. [2022-01-11 01:51:09,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:09,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 4663 transitions. [2022-01-11 01:51:09,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:51:09,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:09,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:51:09,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 01:51:09,435 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 01:51:09,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:09,435 INFO L85 PathProgramCache]: Analyzing trace with hash 335548804, now seen corresponding path program 1 times [2022-01-11 01:51:09,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:09,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778613598] [2022-01-11 01:51:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:09,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:09,478 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 01:51:09,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:09,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778613598] [2022-01-11 01:51:09,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778613598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:09,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:09,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:51:09,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009816779] [2022-01-11 01:51:09,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:09,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:51:09,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:09,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:51:09,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:51:09,480 INFO L87 Difference]: Start difference. First operand 3498 states and 4663 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:09,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:09,734 INFO L93 Difference]: Finished difference Result 4804 states and 6372 transitions. [2022-01-11 01:51:09,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:51:09,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:51:09,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:09,743 INFO L225 Difference]: With dead ends: 4804 [2022-01-11 01:51:09,743 INFO L226 Difference]: Without dead ends: 4080 [2022-01-11 01:51:09,745 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 01:51:09,746 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 1259 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:09,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1259 Valid, 2608 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:51:09,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4080 states. [2022-01-11 01:51:09,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4080 to 3504. [2022-01-11 01:51:09,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3504 states, 3500 states have (on average 1.3305714285714285) internal successors, (4657), 3503 states have internal predecessors, (4657), 0 states have call successors, (0), 0 states 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 01:51:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3504 states to 3504 states and 4657 transitions. [2022-01-11 01:51:09,912 INFO L78 Accepts]: Start accepts. Automaton has 3504 states and 4657 transitions. Word has length 77 [2022-01-11 01:51:09,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:09,912 INFO L470 AbstractCegarLoop]: Abstraction has 3504 states and 4657 transitions. [2022-01-11 01:51:09,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:09,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3504 states and 4657 transitions. [2022-01-11 01:51:09,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:51:09,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:09,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:51:09,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 01:51:09,916 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 01:51:09,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1848128123, now seen corresponding path program 1 times [2022-01-11 01:51:09,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:09,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209434866] [2022-01-11 01:51:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:09,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:09,970 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 01:51:09,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:09,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209434866] [2022-01-11 01:51:09,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209434866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:09,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:09,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:51:09,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30196318] [2022-01-11 01:51:09,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:09,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:09,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:09,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:09,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:09,972 INFO L87 Difference]: Start difference. First operand 3504 states and 4657 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:10,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:10,189 INFO L93 Difference]: Finished difference Result 4931 states and 6466 transitions. [2022-01-11 01:51:10,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:10,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:51:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:10,197 INFO L225 Difference]: With dead ends: 4931 [2022-01-11 01:51:10,197 INFO L226 Difference]: Without dead ends: 4175 [2022-01-11 01:51:10,200 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 01:51:10,200 INFO L933 BasicCegarLoop]: 731 mSDtfsCounter, 632 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:10,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 1181 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:10,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2022-01-11 01:51:10,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 4107. [2022-01-11 01:51:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4107 states, 4103 states have (on average 1.318547404338289) internal successors, (5410), 4106 states have internal predecessors, (5410), 0 states have call successors, (0), 0 states 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 01:51:10,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4107 states to 4107 states and 5410 transitions. [2022-01-11 01:51:10,413 INFO L78 Accepts]: Start accepts. Automaton has 4107 states and 5410 transitions. Word has length 77 [2022-01-11 01:51:10,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:10,413 INFO L470 AbstractCegarLoop]: Abstraction has 4107 states and 5410 transitions. [2022-01-11 01:51:10,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4107 states and 5410 transitions. [2022-01-11 01:51:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-11 01:51:10,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:10,419 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 01:51:10,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 01:51:10,419 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:51:10,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:10,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1418551133, now seen corresponding path program 1 times [2022-01-11 01:51:10,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:10,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076150031] [2022-01-11 01:51:10,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:10,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:10,472 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 01:51:10,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:10,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076150031] [2022-01-11 01:51:10,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076150031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:10,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:10,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:10,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891823534] [2022-01-11 01:51:10,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:10,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:10,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:10,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:10,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:10,474 INFO L87 Difference]: Start difference. First operand 4107 states and 5410 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 01:51:10,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:10,802 INFO L93 Difference]: Finished difference Result 9187 states and 12294 transitions. [2022-01-11 01:51:10,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:10,803 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 01:51:10,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:10,816 INFO L225 Difference]: With dead ends: 9187 [2022-01-11 01:51:10,817 INFO L226 Difference]: Without dead ends: 6647 [2022-01-11 01:51:10,822 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 01:51:10,823 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 131 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1458 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 01:51:10,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 1458 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:10,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6647 states. [2022-01-11 01:51:11,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6647 to 6643. [2022-01-11 01:51:11,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6643 states, 6639 states have (on average 1.3233920771200482) internal successors, (8786), 6642 states have internal predecessors, (8786), 0 states have call successors, (0), 0 states 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 01:51:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6643 states to 6643 states and 8786 transitions. [2022-01-11 01:51:11,191 INFO L78 Accepts]: Start accepts. Automaton has 6643 states and 8786 transitions. Word has length 103 [2022-01-11 01:51:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:11,191 INFO L470 AbstractCegarLoop]: Abstraction has 6643 states and 8786 transitions. [2022-01-11 01:51:11,191 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 01:51:11,191 INFO L276 IsEmpty]: Start isEmpty. Operand 6643 states and 8786 transitions. [2022-01-11 01:51:11,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-11 01:51:11,200 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:11,200 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 01:51:11,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 01:51:11,201 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:51:11,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash -192894853, now seen corresponding path program 1 times [2022-01-11 01:51:11,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:11,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396932602] [2022-01-11 01:51:11,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:11,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:11,243 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 01:51:11,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:11,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396932602] [2022-01-11 01:51:11,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396932602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:11,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:11,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:11,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271285477] [2022-01-11 01:51:11,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:11,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:11,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:11,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:11,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:11,246 INFO L87 Difference]: Start difference. First operand 6643 states and 8786 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 01:51:11,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:11,597 INFO L93 Difference]: Finished difference Result 9211 states and 12290 transitions. [2022-01-11 01:51:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:11,598 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 01:51:11,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:11,601 INFO L225 Difference]: With dead ends: 9211 [2022-01-11 01:51:11,601 INFO L226 Difference]: Without dead ends: 1382 [2022-01-11 01:51:11,609 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 01:51:11,610 INFO L933 BasicCegarLoop]: 843 mSDtfsCounter, 112 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1549 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 01:51:11,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1549 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:11,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2022-01-11 01:51:11,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1382. [2022-01-11 01:51:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1380 states have (on average 1.2608695652173914) internal successors, (1740), 1381 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states 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 01:51:11,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1740 transitions. [2022-01-11 01:51:11,724 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1740 transitions. Word has length 104 [2022-01-11 01:51:11,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:11,724 INFO L470 AbstractCegarLoop]: Abstraction has 1382 states and 1740 transitions. [2022-01-11 01:51:11,724 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 01:51:11,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1740 transitions. [2022-01-11 01:51:11,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 01:51:11,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:11,727 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] [2022-01-11 01:51:11,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 01:51:11,727 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 01:51:11,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash 353165600, now seen corresponding path program 1 times [2022-01-11 01:51:11,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:11,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813482664] [2022-01-11 01:51:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:11,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:11,785 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 01:51:11,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:11,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813482664] [2022-01-11 01:51:11,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813482664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:11,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:11,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:11,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004399151] [2022-01-11 01:51:11,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:11,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:11,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:11,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:11,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:11,787 INFO L87 Difference]: Start difference. First operand 1382 states and 1740 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:51:11,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:11,980 INFO L93 Difference]: Finished difference Result 3987 states and 5036 transitions. [2022-01-11 01:51:11,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:11,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-11 01:51:11,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:11,985 INFO L225 Difference]: With dead ends: 3987 [2022-01-11 01:51:11,985 INFO L226 Difference]: Without dead ends: 2634 [2022-01-11 01:51:11,987 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 01:51:11,987 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 462 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:11,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 985 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:11,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2022-01-11 01:51:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 2502. [2022-01-11 01:51:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2500 states have (on average 1.2592) internal successors, (3148), 2501 states have internal predecessors, (3148), 0 states have call successors, (0), 0 states 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 01:51:12,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3148 transitions. [2022-01-11 01:51:12,141 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3148 transitions. Word has length 124 [2022-01-11 01:51:12,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:12,141 INFO L470 AbstractCegarLoop]: Abstraction has 2502 states and 3148 transitions. [2022-01-11 01:51:12,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:51:12,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3148 transitions. [2022-01-11 01:51:12,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 01:51:12,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:12,144 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] [2022-01-11 01:51:12,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 01:51:12,144 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:51:12,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:12,144 INFO L85 PathProgramCache]: Analyzing trace with hash 900885569, now seen corresponding path program 1 times [2022-01-11 01:51:12,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:12,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842552318] [2022-01-11 01:51:12,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:12,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:12,185 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 01:51:12,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:12,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842552318] [2022-01-11 01:51:12,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842552318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:12,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:12,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:12,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145516574] [2022-01-11 01:51:12,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:12,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:12,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:12,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:12,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:12,187 INFO L87 Difference]: Start difference. First operand 2502 states and 3148 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:51:12,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:12,495 INFO L93 Difference]: Finished difference Result 7279 states and 9103 transitions. [2022-01-11 01:51:12,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:12,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-11 01:51:12,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:12,505 INFO L225 Difference]: With dead ends: 7279 [2022-01-11 01:51:12,505 INFO L226 Difference]: Without dead ends: 4843 [2022-01-11 01:51:12,509 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 01:51:12,510 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 468 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:12,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 1172 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:12,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4843 states. [2022-01-11 01:51:12,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4843 to 4727. [2022-01-11 01:51:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4727 states, 4725 states have (on average 1.2404232804232804) internal successors, (5861), 4726 states have internal predecessors, (5861), 0 states have call successors, (0), 0 states 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 01:51:12,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4727 states to 4727 states and 5861 transitions. [2022-01-11 01:51:12,805 INFO L78 Accepts]: Start accepts. Automaton has 4727 states and 5861 transitions. Word has length 124 [2022-01-11 01:51:12,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:12,805 INFO L470 AbstractCegarLoop]: Abstraction has 4727 states and 5861 transitions. [2022-01-11 01:51:12,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:51:12,806 INFO L276 IsEmpty]: Start isEmpty. Operand 4727 states and 5861 transitions. [2022-01-11 01:51:12,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 01:51:12,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:12,809 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] [2022-01-11 01:51:12,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 01:51:12,809 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:51:12,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:12,809 INFO L85 PathProgramCache]: Analyzing trace with hash -549282082, now seen corresponding path program 1 times [2022-01-11 01:51:12,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:12,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880470440] [2022-01-11 01:51:12,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:12,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:12,836 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 01:51:12,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:12,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880470440] [2022-01-11 01:51:12,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880470440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:12,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:12,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:12,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412995403] [2022-01-11 01:51:12,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:12,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:12,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:12,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:12,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:12,839 INFO L87 Difference]: Start difference. First operand 4727 states and 5861 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 01:51:13,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:13,171 INFO L93 Difference]: Finished difference Result 9362 states and 11616 transitions. [2022-01-11 01:51:13,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:13,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 124 [2022-01-11 01:51:13,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:13,182 INFO L225 Difference]: With dead ends: 9362 [2022-01-11 01:51:13,182 INFO L226 Difference]: Without dead ends: 4668 [2022-01-11 01:51:13,187 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 01:51:13,188 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 538 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 544 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 01:51:13,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 544 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4668 states. [2022-01-11 01:51:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4668 to 4668. [2022-01-11 01:51:13,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4668 states, 4666 states have (on average 1.2415345049292756) internal successors, (5793), 4667 states have internal predecessors, (5793), 0 states have call successors, (0), 0 states 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 01:51:13,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4668 states to 4668 states and 5793 transitions. [2022-01-11 01:51:13,497 INFO L78 Accepts]: Start accepts. Automaton has 4668 states and 5793 transitions. Word has length 124 [2022-01-11 01:51:13,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:13,497 INFO L470 AbstractCegarLoop]: Abstraction has 4668 states and 5793 transitions. [2022-01-11 01:51:13,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 01:51:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand 4668 states and 5793 transitions. [2022-01-11 01:51:13,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 01:51:13,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:13,500 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] [2022-01-11 01:51:13,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 01:51:13,500 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 01:51:13,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:13,501 INFO L85 PathProgramCache]: Analyzing trace with hash -741177774, now seen corresponding path program 1 times [2022-01-11 01:51:13,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:13,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531030602] [2022-01-11 01:51:13,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:13,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:13,563 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 01:51:13,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:13,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531030602] [2022-01-11 01:51:13,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531030602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:13,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:13,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:13,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622475330] [2022-01-11 01:51:13,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:13,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:13,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:13,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:13,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:13,565 INFO L87 Difference]: Start difference. First operand 4668 states and 5793 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 01:51:14,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:14,105 INFO L93 Difference]: Finished difference Result 13162 states and 16302 transitions. [2022-01-11 01:51:14,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:14,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-01-11 01:51:14,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:14,126 INFO L225 Difference]: With dead ends: 13162 [2022-01-11 01:51:14,126 INFO L226 Difference]: Without dead ends: 8560 [2022-01-11 01:51:14,134 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 01:51:14,134 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 365 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1240 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 01:51:14,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 1240 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:14,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8560 states. [2022-01-11 01:51:14,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8560 to 8556. [2022-01-11 01:51:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8556 states, 8554 states have (on average 1.23240589198036) internal successors, (10542), 8555 states have internal predecessors, (10542), 0 states have call successors, (0), 0 states 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 01:51:14,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8556 states to 8556 states and 10542 transitions. [2022-01-11 01:51:14,699 INFO L78 Accepts]: Start accepts. Automaton has 8556 states and 10542 transitions. Word has length 125 [2022-01-11 01:51:14,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:14,699 INFO L470 AbstractCegarLoop]: Abstraction has 8556 states and 10542 transitions. [2022-01-11 01:51:14,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 01:51:14,700 INFO L276 IsEmpty]: Start isEmpty. Operand 8556 states and 10542 transitions. [2022-01-11 01:51:14,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 01:51:14,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:14,704 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] [2022-01-11 01:51:14,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 01:51:14,705 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 01:51:14,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash 485068017, now seen corresponding path program 1 times [2022-01-11 01:51:14,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:14,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792228237] [2022-01-11 01:51:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:14,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:14,733 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 01:51:14,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:14,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792228237] [2022-01-11 01:51:14,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792228237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:14,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:14,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:14,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924336584] [2022-01-11 01:51:14,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:14,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:14,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:14,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:14,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:14,734 INFO L87 Difference]: Start difference. First operand 8556 states and 10542 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 01:51:15,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:15,166 INFO L93 Difference]: Finished difference Result 16988 states and 20944 transitions. [2022-01-11 01:51:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:15,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 125 [2022-01-11 01:51:15,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:15,182 INFO L225 Difference]: With dead ends: 16988 [2022-01-11 01:51:15,182 INFO L226 Difference]: Without dead ends: 8498 [2022-01-11 01:51:15,193 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 01:51:15,194 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 536 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 543 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 01:51:15,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 543 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:15,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8498 states. [2022-01-11 01:51:15,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8498 to 8498. [2022-01-11 01:51:15,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8498 states, 8496 states have (on average 1.2330508474576272) internal successors, (10476), 8497 states have internal predecessors, (10476), 0 states have call successors, (0), 0 states 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 01:51:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8498 states to 8498 states and 10476 transitions. [2022-01-11 01:51:15,857 INFO L78 Accepts]: Start accepts. Automaton has 8498 states and 10476 transitions. Word has length 125 [2022-01-11 01:51:15,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:15,858 INFO L470 AbstractCegarLoop]: Abstraction has 8498 states and 10476 transitions. [2022-01-11 01:51:15,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 01:51:15,858 INFO L276 IsEmpty]: Start isEmpty. Operand 8498 states and 10476 transitions. [2022-01-11 01:51:15,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-11 01:51:15,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:15,862 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] [2022-01-11 01:51:15,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 01:51:15,863 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 01:51:15,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:15,863 INFO L85 PathProgramCache]: Analyzing trace with hash 140442380, now seen corresponding path program 1 times [2022-01-11 01:51:15,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:15,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088548698] [2022-01-11 01:51:15,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:15,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:15,916 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 01:51:15,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:15,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088548698] [2022-01-11 01:51:15,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088548698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:15,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:15,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:15,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686789567] [2022-01-11 01:51:15,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:15,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:15,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:15,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:15,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:15,918 INFO L87 Difference]: Start difference. First operand 8498 states and 10476 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 01:51:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:16,737 INFO L93 Difference]: Finished difference Result 24051 states and 29631 transitions. [2022-01-11 01:51:16,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:16,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-01-11 01:51:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:16,756 INFO L225 Difference]: With dead ends: 24051 [2022-01-11 01:51:16,756 INFO L226 Difference]: Without dead ends: 15619 [2022-01-11 01:51:16,768 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 01:51:16,769 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 370 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1207 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 01:51:16,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 1207 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:16,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15619 states. [2022-01-11 01:51:17,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15619 to 15615. [2022-01-11 01:51:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15615 states, 15613 states have (on average 1.227887017229232) internal successors, (19171), 15614 states have internal predecessors, (19171), 0 states have call successors, (0), 0 states 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 01:51:17,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15615 states to 15615 states and 19171 transitions. [2022-01-11 01:51:17,743 INFO L78 Accepts]: Start accepts. Automaton has 15615 states and 19171 transitions. Word has length 126 [2022-01-11 01:51:17,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:17,743 INFO L470 AbstractCegarLoop]: Abstraction has 15615 states and 19171 transitions. [2022-01-11 01:51:17,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 01:51:17,743 INFO L276 IsEmpty]: Start isEmpty. Operand 15615 states and 19171 transitions. [2022-01-11 01:51:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-11 01:51:17,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:17,750 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] [2022-01-11 01:51:17,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 01:51:17,750 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 01:51:17,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:17,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1366688171, now seen corresponding path program 1 times [2022-01-11 01:51:17,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:17,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671885390] [2022-01-11 01:51:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:17,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:17,782 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 01:51:17,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:17,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671885390] [2022-01-11 01:51:17,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671885390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:17,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:17,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:17,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585762273] [2022-01-11 01:51:17,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:17,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:17,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:17,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:17,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:17,784 INFO L87 Difference]: Start difference. First operand 15615 states and 19171 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 01:51:18,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:18,668 INFO L93 Difference]: Finished difference Result 31107 states and 38205 transitions. [2022-01-11 01:51:18,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:18,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 126 [2022-01-11 01:51:18,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:18,686 INFO L225 Difference]: With dead ends: 31107 [2022-01-11 01:51:18,686 INFO L226 Difference]: Without dead ends: 15558 [2022-01-11 01:51:18,700 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 01:51:18,700 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 534 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 542 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 01:51:18,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 542 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:18,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15558 states. [2022-01-11 01:51:19,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15558 to 15558. [2022-01-11 01:51:19,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15558 states, 15556 states have (on average 1.228272049370018) internal successors, (19107), 15557 states have internal predecessors, (19107), 0 states have call successors, (0), 0 states 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 01:51:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15558 states to 15558 states and 19107 transitions. [2022-01-11 01:51:19,496 INFO L78 Accepts]: Start accepts. Automaton has 15558 states and 19107 transitions. Word has length 126 [2022-01-11 01:51:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:19,496 INFO L470 AbstractCegarLoop]: Abstraction has 15558 states and 19107 transitions. [2022-01-11 01:51:19,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 01:51:19,496 INFO L276 IsEmpty]: Start isEmpty. Operand 15558 states and 19107 transitions. [2022-01-11 01:51:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 01:51:19,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:19,502 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] [2022-01-11 01:51:19,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 01:51:19,503 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 01:51:19,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:19,503 INFO L85 PathProgramCache]: Analyzing trace with hash -590531069, now seen corresponding path program 1 times [2022-01-11 01:51:19,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:19,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963449797] [2022-01-11 01:51:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:19,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:19,594 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 01:51:19,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:19,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963449797] [2022-01-11 01:51:19,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963449797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:19,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:19,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:19,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102075146] [2022-01-11 01:51:19,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:19,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:19,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:19,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:19,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:19,596 INFO L87 Difference]: Start difference. First operand 15558 states and 19107 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 01:51:21,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:21,054 INFO L93 Difference]: Finished difference Result 44070 states and 54068 transitions. [2022-01-11 01:51:21,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:21,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-01-11 01:51:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:21,093 INFO L225 Difference]: With dead ends: 44070 [2022-01-11 01:51:21,094 INFO L226 Difference]: Without dead ends: 28578 [2022-01-11 01:51:21,106 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 01:51:21,107 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 467 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:21,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 1129 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:21,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28578 states. [2022-01-11 01:51:22,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28578 to 28318. [2022-01-11 01:51:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28318 states, 28316 states have (on average 1.2250317841503038) internal successors, (34688), 28317 states have internal predecessors, (34688), 0 states have call successors, (0), 0 states 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 01:51:22,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28318 states to 28318 states and 34688 transitions. [2022-01-11 01:51:22,773 INFO L78 Accepts]: Start accepts. Automaton has 28318 states and 34688 transitions. Word has length 127 [2022-01-11 01:51:22,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:22,773 INFO L470 AbstractCegarLoop]: Abstraction has 28318 states and 34688 transitions. [2022-01-11 01:51:22,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 01:51:22,774 INFO L276 IsEmpty]: Start isEmpty. Operand 28318 states and 34688 transitions. [2022-01-11 01:51:22,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 01:51:22,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:22,784 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] [2022-01-11 01:51:22,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 01:51:22,784 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 01:51:22,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1894012004, now seen corresponding path program 1 times [2022-01-11 01:51:22,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:22,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727618305] [2022-01-11 01:51:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:22,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:22,813 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 01:51:22,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:22,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727618305] [2022-01-11 01:51:22,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727618305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:22,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:22,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:22,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474009466] [2022-01-11 01:51:22,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:22,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:22,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:22,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:22,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:22,815 INFO L87 Difference]: Start difference. First operand 28318 states and 34688 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 01:51:24,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:24,295 INFO L93 Difference]: Finished difference Result 56526 states and 69254 transitions. [2022-01-11 01:51:24,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:24,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 127 [2022-01-11 01:51:24,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:24,340 INFO L225 Difference]: With dead ends: 56526 [2022-01-11 01:51:24,340 INFO L226 Difference]: Without dead ends: 28262 [2022-01-11 01:51:24,374 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 01:51:24,375 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 532 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 541 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 01:51:24,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 541 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:24,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28262 states. [2022-01-11 01:51:26,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28262 to 28262. [2022-01-11 01:51:26,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28262 states, 28260 states have (on average 1.2252653927813164) internal successors, (34626), 28261 states have internal predecessors, (34626), 0 states have call successors, (0), 0 states 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 01:51:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28262 states to 28262 states and 34626 transitions. [2022-01-11 01:51:26,232 INFO L78 Accepts]: Start accepts. Automaton has 28262 states and 34626 transitions. Word has length 127 [2022-01-11 01:51:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:26,232 INFO L470 AbstractCegarLoop]: Abstraction has 28262 states and 34626 transitions. [2022-01-11 01:51:26,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 01:51:26,233 INFO L276 IsEmpty]: Start isEmpty. Operand 28262 states and 34626 transitions. [2022-01-11 01:51:26,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-11 01:51:26,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:26,240 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] [2022-01-11 01:51:26,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 01:51:26,240 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 01:51:26,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:26,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1947996128, now seen corresponding path program 1 times [2022-01-11 01:51:26,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:26,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257585171] [2022-01-11 01:51:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:26,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:26,290 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 01:51:26,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:26,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257585171] [2022-01-11 01:51:26,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257585171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:26,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:26,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:26,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703407645] [2022-01-11 01:51:26,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:26,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:26,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:26,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:26,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:26,292 INFO L87 Difference]: Start difference. First operand 28262 states and 34626 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 01:51:29,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:29,398 INFO L93 Difference]: Finished difference Result 81350 states and 99349 transitions. [2022-01-11 01:51:29,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:29,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-01-11 01:51:29,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:29,453 INFO L225 Difference]: With dead ends: 81350 [2022-01-11 01:51:29,454 INFO L226 Difference]: Without dead ends: 40830 [2022-01-11 01:51:29,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 01:51:29,489 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 452 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:29,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 1512 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:29,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40830 states. [2022-01-11 01:51:31,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40830 to 40830. [2022-01-11 01:51:31,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40830 states, 40828 states have (on average 1.217522288625453) internal successors, (49709), 40829 states have internal predecessors, (49709), 0 states have call successors, (0), 0 states 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 01:51:32,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40830 states to 40830 states and 49709 transitions. [2022-01-11 01:51:32,042 INFO L78 Accepts]: Start accepts. Automaton has 40830 states and 49709 transitions. Word has length 128 [2022-01-11 01:51:32,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:32,042 INFO L470 AbstractCegarLoop]: Abstraction has 40830 states and 49709 transitions. [2022-01-11 01:51:32,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 01:51:32,042 INFO L276 IsEmpty]: Start isEmpty. Operand 40830 states and 49709 transitions. [2022-01-11 01:51:32,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:51:32,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:32,057 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] [2022-01-11 01:51:32,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 01:51:32,057 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 01:51:32,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:32,057 INFO L85 PathProgramCache]: Analyzing trace with hash 81969764, now seen corresponding path program 1 times [2022-01-11 01:51:32,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:32,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430516320] [2022-01-11 01:51:32,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:32,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:32,107 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 01:51:32,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:32,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430516320] [2022-01-11 01:51:32,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430516320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:32,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:32,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:51:32,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410755635] [2022-01-11 01:51:32,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:32,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:32,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:32,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:32,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:32,109 INFO L87 Difference]: Start difference. First operand 40830 states and 49709 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:35,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:35,155 INFO L93 Difference]: Finished difference Result 94010 states and 114228 transitions. [2022-01-11 01:51:35,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:35,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2022-01-11 01:51:35,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:35,259 INFO L225 Difference]: With dead ends: 94010 [2022-01-11 01:51:35,259 INFO L226 Difference]: Without dead ends: 53229 [2022-01-11 01:51:35,297 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 01:51:35,298 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 335 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:35,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 980 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53229 states. [2022-01-11 01:51:38,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53229 to 53037. [2022-01-11 01:51:38,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53037 states, 53035 states have (on average 1.208767794852456) internal successors, (64107), 53036 states have internal predecessors, (64107), 0 states have call successors, (0), 0 states 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 01:51:38,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53037 states to 53037 states and 64107 transitions. [2022-01-11 01:51:38,674 INFO L78 Accepts]: Start accepts. Automaton has 53037 states and 64107 transitions. Word has length 165 [2022-01-11 01:51:38,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:38,674 INFO L470 AbstractCegarLoop]: Abstraction has 53037 states and 64107 transitions. [2022-01-11 01:51:38,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:38,675 INFO L276 IsEmpty]: Start isEmpty. Operand 53037 states and 64107 transitions. [2022-01-11 01:51:38,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-11 01:51:38,700 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:38,700 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:38,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 01:51:38,700 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 01:51:38,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:38,700 INFO L85 PathProgramCache]: Analyzing trace with hash 831326001, now seen corresponding path program 1 times [2022-01-11 01:51:38,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:38,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049900115] [2022-01-11 01:51:38,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:38,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-11 01:51:38,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:38,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049900115] [2022-01-11 01:51:38,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049900115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:38,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:38,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:38,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613494172] [2022-01-11 01:51:38,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:38,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:38,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:38,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:38,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:38,747 INFO L87 Difference]: Start difference. First operand 53037 states and 64107 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:42,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:42,167 INFO L93 Difference]: Finished difference Result 105109 states and 126801 transitions. [2022-01-11 01:51:42,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:42,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2022-01-11 01:51:42,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:42,255 INFO L225 Difference]: With dead ends: 105109 [2022-01-11 01:51:42,256 INFO L226 Difference]: Without dead ends: 52137 [2022-01-11 01:51:42,295 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 01:51:42,295 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 376 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:42,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 1005 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52137 states. [2022-01-11 01:51:45,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52137 to 52137. [2022-01-11 01:51:45,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52137 states, 52135 states have (on average 1.1915795530833413) internal successors, (62123), 52136 states have internal predecessors, (62123), 0 states have call successors, (0), 0 states 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 01:51:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52137 states to 52137 states and 62123 transitions. [2022-01-11 01:51:45,783 INFO L78 Accepts]: Start accepts. Automaton has 52137 states and 62123 transitions. Word has length 184 [2022-01-11 01:51:45,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:45,784 INFO L470 AbstractCegarLoop]: Abstraction has 52137 states and 62123 transitions. [2022-01-11 01:51:45,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:51:45,784 INFO L276 IsEmpty]: Start isEmpty. Operand 52137 states and 62123 transitions. [2022-01-11 01:51:45,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-11 01:51:45,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:45,810 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:45,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-11 01:51:45,811 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 01:51:45,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:45,811 INFO L85 PathProgramCache]: Analyzing trace with hash 501961127, now seen corresponding path program 1 times [2022-01-11 01:51:45,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:45,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905593488] [2022-01-11 01:51:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:45,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:51:45,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:45,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905593488] [2022-01-11 01:51:45,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905593488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:45,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:45,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:45,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826626432] [2022-01-11 01:51:45,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:45,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:45,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:45,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:45,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:45,869 INFO L87 Difference]: Start difference. First operand 52137 states and 62123 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 01:51:49,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:49,191 INFO L93 Difference]: Finished difference Result 92185 states and 110171 transitions. [2022-01-11 01:51:49,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:49,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2022-01-11 01:51:49,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:49,277 INFO L225 Difference]: With dead ends: 92185 [2022-01-11 01:51:49,277 INFO L226 Difference]: Without dead ends: 52141 [2022-01-11 01:51:49,309 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 01:51:49,310 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 390 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:49,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 1427 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:49,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52141 states. [2022-01-11 01:51:52,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52141 to 52137. [2022-01-11 01:51:52,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52137 states, 52135 states have (on average 1.1895080080560085) internal successors, (62015), 52136 states have internal predecessors, (62015), 0 states have call successors, (0), 0 states 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 01:51:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52137 states to 52137 states and 62015 transitions. [2022-01-11 01:51:52,754 INFO L78 Accepts]: Start accepts. Automaton has 52137 states and 62015 transitions. Word has length 185 [2022-01-11 01:51:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:52,754 INFO L470 AbstractCegarLoop]: Abstraction has 52137 states and 62015 transitions. [2022-01-11 01:51:52,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 01:51:52,754 INFO L276 IsEmpty]: Start isEmpty. Operand 52137 states and 62015 transitions. [2022-01-11 01:51:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-11 01:51:52,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:52,783 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:52,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-11 01:51:52,784 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 01:51:52,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:52,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1039804896, now seen corresponding path program 1 times [2022-01-11 01:51:52,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:52,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059230137] [2022-01-11 01:51:52,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:52,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:51:52,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:52,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059230137] [2022-01-11 01:51:52,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059230137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:52,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:52,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:51:52,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229124005] [2022-01-11 01:51:52,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:52,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:51:52,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:52,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:51:52,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:51:52,838 INFO L87 Difference]: Start difference. First operand 52137 states and 62015 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 01:51:56,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:51:56,085 INFO L93 Difference]: Finished difference Result 92309 states and 110081 transitions. [2022-01-11 01:51:56,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:51:56,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2022-01-11 01:51:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:51:56,166 INFO L225 Difference]: With dead ends: 92309 [2022-01-11 01:51:56,167 INFO L226 Difference]: Without dead ends: 52265 [2022-01-11 01:51:56,201 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 01:51:56,202 INFO L933 BasicCegarLoop]: 903 mSDtfsCounter, 423 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:51:56,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 1345 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:51:56,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52265 states. [2022-01-11 01:51:59,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52265 to 52137. [2022-01-11 01:51:59,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52137 states, 52135 states have (on average 1.1726287522777405) internal successors, (61135), 52136 states have internal predecessors, (61135), 0 states have call successors, (0), 0 states 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 01:51:59,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52137 states to 52137 states and 61135 transitions. [2022-01-11 01:51:59,640 INFO L78 Accepts]: Start accepts. Automaton has 52137 states and 61135 transitions. Word has length 185 [2022-01-11 01:51:59,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:51:59,641 INFO L470 AbstractCegarLoop]: Abstraction has 52137 states and 61135 transitions. [2022-01-11 01:51:59,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 01:51:59,641 INFO L276 IsEmpty]: Start isEmpty. Operand 52137 states and 61135 transitions. [2022-01-11 01:51:59,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-11 01:51:59,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:51:59,662 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:59,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-11 01:51:59,662 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 01:51:59,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:51:59,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1214654481, now seen corresponding path program 1 times [2022-01-11 01:51:59,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:51:59,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083612900] [2022-01-11 01:51:59,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:51:59,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:51:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:51:59,735 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-11 01:51:59,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:51:59,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083612900] [2022-01-11 01:51:59,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083612900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:51:59,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:51:59,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:51:59,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856209023] [2022-01-11 01:51:59,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:51:59,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:51:59,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:51:59,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:51:59,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:51:59,737 INFO L87 Difference]: Start difference. First operand 52137 states and 61135 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)