/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.10.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:05:39,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:05:39,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:05:39,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:05:39,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:05:39,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:05:39,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:05:39,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:05:39,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:05:39,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:05:39,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:05:39,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:05:39,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:05:39,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:05:39,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:05:39,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:05:39,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:05:39,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:05:39,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:05:39,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:05:39,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:05:39,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:05:39,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:05:39,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:05:39,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 20:05:39,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 20:05:39,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 20:05:39,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 20:05:39,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 20:05:39,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-10 20:05:39,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:05:39,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:05:39,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:05:39,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 20:05:39,433 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:05:39,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:05:39,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:05:39,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:05:39,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:05:39,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:05:39,435 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:05:39,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:05:39,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:05:39,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:05:39,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:05:39,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:05:39,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:05:39,436 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:05:39,436 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:05:39,436 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:05:39,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:05:39,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:05:39,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:05:39,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:05:39,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:05:39,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:05:39,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:05:39,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:05:39,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:05:39,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:05:39,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:05:39,437 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:05:39,437 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:05:39,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:05:39,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:05:39,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:05:39,438 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:05:39,438 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:05:39,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:05:39,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:05:39,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:05:39,660 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:05:39,661 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:05:39,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.10.cil-2.c [2022-01-10 20:05:39,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a0e6fb4/9f095ad09311484997144a6cd828cc52/FLAGa049c89ac [2022-01-10 20:05:40,071 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:05:40,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.10.cil-2.c [2022-01-10 20:05:40,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a0e6fb4/9f095ad09311484997144a6cd828cc52/FLAGa049c89ac [2022-01-10 20:05:40,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a0e6fb4/9f095ad09311484997144a6cd828cc52 [2022-01-10 20:05:40,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:05:40,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:05:40,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:05:40,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:05:40,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:05:40,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:05:40" (1/1) ... [2022-01-10 20:05:40,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66913807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:05:40, skipping insertion in model container [2022-01-10 20:05:40,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:05:40" (1/1) ... [2022-01-10 20:05:40,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:05:40,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:05:40,651 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.10.cil-2.c[911,924] [2022-01-10 20:05:40,696 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.10.cil-2.c[8416,8429] [2022-01-10 20:05:40,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:05:40,810 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:05:40,822 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.10.cil-2.c[911,924] [2022-01-10 20:05:40,851 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.10.cil-2.c[8416,8429] [2022-01-10 20:05:40,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:05:40,928 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:05:40,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:05:40 WrapperNode [2022-01-10 20:05:40,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:05:40,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:05:40,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:05:40,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:05:40,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:05:40" (1/1) ... [2022-01-10 20:05:40,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:05:40" (1/1) ... [2022-01-10 20:05:41,037 INFO L137 Inliner]: procedures = 76, calls = 91, calls flagged for inlining = 86, calls inlined = 242, statements flattened = 3590 [2022-01-10 20:05:41,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:05:41,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:05:41,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:05:41,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:05:41,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:05:40" (1/1) ... [2022-01-10 20:05:41,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:05:40" (1/1) ... [2022-01-10 20:05:41,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:05:40" (1/1) ... [2022-01-10 20:05:41,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:05:40" (1/1) ... [2022-01-10 20:05:41,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:05:40" (1/1) ... [2022-01-10 20:05:41,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:05:40" (1/1) ... [2022-01-10 20:05:41,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:05:40" (1/1) ... [2022-01-10 20:05:41,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:05:41,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:05:41,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:05:41,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:05:41,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:05:40" (1/1) ... [2022-01-10 20:05:41,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:05:41,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:05:41,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 20:05:41,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 20:05:41,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:05:41,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:05:41,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:05:41,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:05:41,357 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:05:41,358 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:05:43,192 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume !(1bv32 == ~q_free~0); [2022-01-10 20:05:43,192 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; [2022-01-10 20:05:43,192 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:05:43,215 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:05:43,215 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-01-10 20:05:43,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:05:43 BoogieIcfgContainer [2022-01-10 20:05:43,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:05:43,219 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:05:43,219 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:05:43,220 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:05:43,223 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:05:43" (1/1) ... [2022-01-10 20:05:43,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:05:43 BasicIcfg [2022-01-10 20:05:43,553 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:05:43,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:05:43,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:05:43,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:05:43,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:05:40" (1/4) ... [2022-01-10 20:05:43,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b84f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:05:43, skipping insertion in model container [2022-01-10 20:05:43,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:05:40" (2/4) ... [2022-01-10 20:05:43,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b84f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:05:43, skipping insertion in model container [2022-01-10 20:05:43,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:05:43" (3/4) ... [2022-01-10 20:05:43,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b84f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:05:43, skipping insertion in model container [2022-01-10 20:05:43,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:05:43" (4/4) ... [2022-01-10 20:05:43,561 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.10.cil-2.cTransformedIcfg [2022-01-10 20:05:43,565 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:05:43,565 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 20:05:43,700 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:05:43,706 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 20:05:43,706 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 20:05:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 1510 states, 1506 states have (on average 1.5139442231075697) internal successors, (2280), 1509 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:43,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 20:05:43,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:43,742 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] [2022-01-10 20:05:43,743 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:43,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:43,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1116659319, now seen corresponding path program 1 times [2022-01-10 20:05:43,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:43,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134387797] [2022-01-10 20:05:43,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:43,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:44,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:44,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134387797] [2022-01-10 20:05:44,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134387797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:44,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:44,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:05:44,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792430221] [2022-01-10 20:05:44,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:44,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:44,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:44,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:44,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:44,165 INFO L87 Difference]: Start difference. First operand has 1510 states, 1506 states have (on average 1.5139442231075697) internal successors, (2280), 1509 states have internal predecessors, (2280), 0 states have call successors, (0), 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) [2022-01-10 20:05:44,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:44,412 INFO L93 Difference]: Finished difference Result 3004 states and 4525 transitions. [2022-01-10 20:05:44,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:44,414 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 [2022-01-10 20:05:44,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:44,431 INFO L225 Difference]: With dead ends: 3004 [2022-01-10 20:05:44,432 INFO L226 Difference]: Without dead ends: 1633 [2022-01-10 20:05:44,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:44,443 INFO L933 BasicCegarLoop]: 2234 mSDtfsCounter, 185 mSDsluCounter, 2202 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 4436 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 [2022-01-10 20:05:44,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 4436 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:05:44,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2022-01-10 20:05:44,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1629. [2022-01-10 20:05:44,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1626 states have (on average 1.485239852398524) internal successors, (2415), 1628 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2415 transitions. [2022-01-10 20:05:44,568 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2415 transitions. Word has length 44 [2022-01-10 20:05:44,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:44,569 INFO L470 AbstractCegarLoop]: Abstraction has 1629 states and 2415 transitions. [2022-01-10 20:05:44,569 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) [2022-01-10 20:05:44,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2415 transitions. [2022-01-10 20:05:44,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 20:05:44,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:44,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:44,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:05:44,571 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:44,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:44,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1680631177, now seen corresponding path program 1 times [2022-01-10 20:05:44,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:44,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065823591] [2022-01-10 20:05:44,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:44,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:44,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:44,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065823591] [2022-01-10 20:05:44,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065823591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:44,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:44,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:05:44,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077974832] [2022-01-10 20:05:44,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:44,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:44,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:44,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:44,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:44,701 INFO L87 Difference]: Start difference. First operand 1629 states and 2415 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) [2022-01-10 20:05:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:44,806 INFO L93 Difference]: Finished difference Result 2047 states and 3020 transitions. [2022-01-10 20:05:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:44,807 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 [2022-01-10 20:05:44,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:44,815 INFO L225 Difference]: With dead ends: 2047 [2022-01-10 20:05:44,815 INFO L226 Difference]: Without dead ends: 1807 [2022-01-10 20:05:44,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:44,818 INFO L933 BasicCegarLoop]: 2219 mSDtfsCounter, 2193 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2193 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:44,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2193 Valid, 2354 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:44,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2022-01-10 20:05:44,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1799. [2022-01-10 20:05:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1796 states have (on average 1.475501113585746) internal successors, (2650), 1798 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 2650 transitions. [2022-01-10 20:05:44,868 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 2650 transitions. Word has length 44 [2022-01-10 20:05:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:44,869 INFO L470 AbstractCegarLoop]: Abstraction has 1799 states and 2650 transitions. [2022-01-10 20:05:44,870 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) [2022-01-10 20:05:44,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 2650 transitions. [2022-01-10 20:05:44,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 20:05:44,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:44,882 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] [2022-01-10 20:05:44,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 20:05:44,883 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:44,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:44,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2092714995, now seen corresponding path program 1 times [2022-01-10 20:05:44,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:44,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039715718] [2022-01-10 20:05:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:44,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:44,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:44,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039715718] [2022-01-10 20:05:44,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039715718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:44,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:44,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:05:44,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323109008] [2022-01-10 20:05:44,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:44,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:44,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:44,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:44,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:44,962 INFO L87 Difference]: Start difference. First operand 1799 states and 2650 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) [2022-01-10 20:05:45,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:45,048 INFO L93 Difference]: Finished difference Result 2521 states and 3684 transitions. [2022-01-10 20:05:45,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:45,049 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 [2022-01-10 20:05:45,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:45,057 INFO L225 Difference]: With dead ends: 2521 [2022-01-10 20:05:45,057 INFO L226 Difference]: Without dead ends: 2125 [2022-01-10 20:05:45,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:45,065 INFO L933 BasicCegarLoop]: 2213 mSDtfsCounter, 2177 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 2351 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 [2022-01-10 20:05:45,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2177 Valid, 2351 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:45,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2022-01-10 20:05:45,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2117. [2022-01-10 20:05:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 2114 states have (on average 1.45837275307474) internal successors, (3083), 2116 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 3083 transitions. [2022-01-10 20:05:45,133 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 3083 transitions. Word has length 45 [2022-01-10 20:05:45,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:45,134 INFO L470 AbstractCegarLoop]: Abstraction has 2117 states and 3083 transitions. [2022-01-10 20:05:45,134 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) [2022-01-10 20:05:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 3083 transitions. [2022-01-10 20:05:45,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 20:05:45,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:45,136 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] [2022-01-10 20:05:45,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 20:05:45,137 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:45,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:45,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1855865893, now seen corresponding path program 1 times [2022-01-10 20:05:45,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:45,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909427772] [2022-01-10 20:05:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:45,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:45,257 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 20:05:45,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:45,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909427772] [2022-01-10 20:05:45,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909427772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:45,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:45,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:05:45,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646939120] [2022-01-10 20:05:45,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:45,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:45,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:45,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:45,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:45,259 INFO L87 Difference]: Start difference. First operand 2117 states and 3083 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) [2022-01-10 20:05:45,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:45,373 INFO L93 Difference]: Finished difference Result 3485 states and 4985 transitions. [2022-01-10 20:05:45,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:45,374 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 [2022-01-10 20:05:45,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:45,384 INFO L225 Difference]: With dead ends: 3485 [2022-01-10 20:05:45,384 INFO L226 Difference]: Without dead ends: 2789 [2022-01-10 20:05:45,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:45,386 INFO L933 BasicCegarLoop]: 2216 mSDtfsCounter, 2172 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:45,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2172 Valid, 2381 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:45,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2022-01-10 20:05:45,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2785. [2022-01-10 20:05:45,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2782 states have (on average 1.4266714593817398) internal successors, (3969), 2784 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3969 transitions. [2022-01-10 20:05:45,489 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3969 transitions. Word has length 59 [2022-01-10 20:05:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:45,489 INFO L470 AbstractCegarLoop]: Abstraction has 2785 states and 3969 transitions. [2022-01-10 20:05:45,489 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) [2022-01-10 20:05:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3969 transitions. [2022-01-10 20:05:45,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 20:05:45,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:45,491 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] [2022-01-10 20:05:45,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 20:05:45,492 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:45,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1170608999, now seen corresponding path program 1 times [2022-01-10 20:05:45,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:45,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451658575] [2022-01-10 20:05:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:45,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:45,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:45,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451658575] [2022-01-10 20:05:45,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451658575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:45,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:45,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:05:45,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994319819] [2022-01-10 20:05:45,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:45,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:45,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:45,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:45,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:45,545 INFO L87 Difference]: Start difference. First operand 2785 states and 3969 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) [2022-01-10 20:05:45,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:45,729 INFO L93 Difference]: Finished difference Result 5409 states and 7551 transitions. [2022-01-10 20:05:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:45,730 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 [2022-01-10 20:05:45,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:45,745 INFO L225 Difference]: With dead ends: 5409 [2022-01-10 20:05:45,746 INFO L226 Difference]: Without dead ends: 4089 [2022-01-10 20:05:45,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:45,751 INFO L933 BasicCegarLoop]: 2367 mSDtfsCounter, 146 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 4570 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 [2022-01-10 20:05:45,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 4570 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:45,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4089 states. [2022-01-10 20:05:45,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4089 to 4089. [2022-01-10 20:05:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4089 states, 4086 states have (on average 1.394273127753304) internal successors, (5697), 4088 states have internal predecessors, (5697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:45,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 5697 transitions. [2022-01-10 20:05:45,928 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 5697 transitions. Word has length 61 [2022-01-10 20:05:45,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:45,930 INFO L470 AbstractCegarLoop]: Abstraction has 4089 states and 5697 transitions. [2022-01-10 20:05:45,930 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) [2022-01-10 20:05:45,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 5697 transitions. [2022-01-10 20:05:45,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 20:05:45,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:45,936 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] [2022-01-10 20:05:45,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 20:05:45,936 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:45,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:45,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1818408626, now seen corresponding path program 1 times [2022-01-10 20:05:45,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:45,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470118185] [2022-01-10 20:05:45,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:45,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 20:05:46,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:46,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470118185] [2022-01-10 20:05:46,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470118185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:46,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:46,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:05:46,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151789060] [2022-01-10 20:05:46,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:46,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:46,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:46,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:46,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:46,029 INFO L87 Difference]: Start difference. First operand 4089 states and 5697 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) [2022-01-10 20:05:46,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:46,226 INFO L93 Difference]: Finished difference Result 9169 states and 12581 transitions. [2022-01-10 20:05:46,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:46,226 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 [2022-01-10 20:05:46,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:46,254 INFO L225 Difference]: With dead ends: 9169 [2022-01-10 20:05:46,254 INFO L226 Difference]: Without dead ends: 6629 [2022-01-10 20:05:46,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:46,262 INFO L933 BasicCegarLoop]: 2217 mSDtfsCounter, 131 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 4387 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 [2022-01-10 20:05:46,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 4387 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:46,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6629 states. [2022-01-10 20:05:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6629 to 6625. [2022-01-10 20:05:46,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6625 states, 6622 states have (on average 1.37012987012987) internal successors, (9073), 6624 states have internal predecessors, (9073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6625 states to 6625 states and 9073 transitions. [2022-01-10 20:05:46,543 INFO L78 Accepts]: Start accepts. Automaton has 6625 states and 9073 transitions. Word has length 103 [2022-01-10 20:05:46,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:46,544 INFO L470 AbstractCegarLoop]: Abstraction has 6625 states and 9073 transitions. [2022-01-10 20:05:46,544 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) [2022-01-10 20:05:46,544 INFO L276 IsEmpty]: Start isEmpty. Operand 6625 states and 9073 transitions. [2022-01-10 20:05:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 20:05:46,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:46,556 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] [2022-01-10 20:05:46,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 20:05:46,556 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:46,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:46,557 INFO L85 PathProgramCache]: Analyzing trace with hash -998462436, now seen corresponding path program 1 times [2022-01-10 20:05:46,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:46,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804015336] [2022-01-10 20:05:46,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:46,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:46,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:46,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804015336] [2022-01-10 20:05:46,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804015336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:46,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:46,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:05:46,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887960814] [2022-01-10 20:05:46,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:46,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:46,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:46,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:46,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:46,636 INFO L87 Difference]: Start difference. First operand 6625 states and 9073 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) [2022-01-10 20:05:46,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:46,882 INFO L93 Difference]: Finished difference Result 9193 states and 12577 transitions. [2022-01-10 20:05:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:46,884 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 [2022-01-10 20:05:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:46,889 INFO L225 Difference]: With dead ends: 9193 [2022-01-10 20:05:46,889 INFO L226 Difference]: Without dead ends: 1364 [2022-01-10 20:05:46,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:46,898 INFO L933 BasicCegarLoop]: 2323 mSDtfsCounter, 112 mSDsluCounter, 2186 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 4509 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 [2022-01-10 20:05:46,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 4509 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:46,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-01-10 20:05:46,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2022-01-10 20:05:46,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1363 states have (on average 1.4871606749816582) internal successors, (2027), 1363 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:46,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 2027 transitions. [2022-01-10 20:05:46,931 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 2027 transitions. Word has length 104 [2022-01-10 20:05:46,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:46,931 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 2027 transitions. [2022-01-10 20:05:46,932 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) [2022-01-10 20:05:46,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 2027 transitions. [2022-01-10 20:05:46,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:46,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:46,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:46,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 20:05:46,934 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:46,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:46,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1677820436, now seen corresponding path program 1 times [2022-01-10 20:05:46,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:46,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541995739] [2022-01-10 20:05:46,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:46,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:46,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:46,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541995739] [2022-01-10 20:05:46,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541995739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:46,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:46,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:05:46,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152376160] [2022-01-10 20:05:46,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:46,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:46,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:46,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:46,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:46,982 INFO L87 Difference]: Start difference. First operand 1364 states and 2027 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:47,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:47,031 INFO L93 Difference]: Finished difference Result 2716 states and 4035 transitions. [2022-01-10 20:05:47,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:47,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:47,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:47,036 INFO L225 Difference]: With dead ends: 2716 [2022-01-10 20:05:47,036 INFO L226 Difference]: Without dead ends: 1364 [2022-01-10 20:05:47,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:47,039 INFO L933 BasicCegarLoop]: 2025 mSDtfsCounter, 2015 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 2026 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 [2022-01-10 20:05:47,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2015 Valid, 2026 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:47,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-01-10 20:05:47,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2022-01-10 20:05:47,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1363 states have (on average 1.4864269992663244) internal successors, (2026), 1363 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:47,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 2026 transitions. [2022-01-10 20:05:47,089 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 2026 transitions. Word has length 143 [2022-01-10 20:05:47,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:47,089 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 2026 transitions. [2022-01-10 20:05:47,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:47,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 2026 transitions. [2022-01-10 20:05:47,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:47,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:47,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:47,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 20:05:47,091 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:47,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:47,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1822230131, now seen corresponding path program 1 times [2022-01-10 20:05:47,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:47,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618299971] [2022-01-10 20:05:47,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:47,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:47,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:47,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618299971] [2022-01-10 20:05:47,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618299971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:47,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:47,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:05:47,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447453261] [2022-01-10 20:05:47,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:47,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:47,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:47,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:47,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:47,155 INFO L87 Difference]: Start difference. First operand 1364 states and 2026 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:47,206 INFO L93 Difference]: Finished difference Result 2713 states and 4028 transitions. [2022-01-10 20:05:47,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:47,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:47,211 INFO L225 Difference]: With dead ends: 2713 [2022-01-10 20:05:47,211 INFO L226 Difference]: Without dead ends: 1364 [2022-01-10 20:05:47,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:47,216 INFO L933 BasicCegarLoop]: 2024 mSDtfsCounter, 2011 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 2025 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 [2022-01-10 20:05:47,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2011 Valid, 2025 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-01-10 20:05:47,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2022-01-10 20:05:47,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1363 states have (on average 1.4856933235509904) internal successors, (2025), 1363 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:47,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 2025 transitions. [2022-01-10 20:05:47,254 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 2025 transitions. Word has length 143 [2022-01-10 20:05:47,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:47,254 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 2025 transitions. [2022-01-10 20:05:47,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:47,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 2025 transitions. [2022-01-10 20:05:47,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:47,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:47,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:47,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 20:05:47,256 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:47,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:47,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1348204148, now seen corresponding path program 1 times [2022-01-10 20:05:47,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:47,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126741553] [2022-01-10 20:05:47,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:47,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:47,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:47,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:47,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126741553] [2022-01-10 20:05:47,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126741553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:47,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:47,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:47,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122946475] [2022-01-10 20:05:47,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:47,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:47,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:47,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:47,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:47,305 INFO L87 Difference]: Start difference. First operand 1364 states and 2025 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:47,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:47,436 INFO L93 Difference]: Finished difference Result 3855 states and 5708 transitions. [2022-01-10 20:05:47,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:47,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:47,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:47,460 INFO L225 Difference]: With dead ends: 3855 [2022-01-10 20:05:47,460 INFO L226 Difference]: Without dead ends: 2509 [2022-01-10 20:05:47,463 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 [2022-01-10 20:05:47,463 INFO L933 BasicCegarLoop]: 2019 mSDtfsCounter, 1890 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 3811 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 [2022-01-10 20:05:47,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1890 Valid, 3811 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2022-01-10 20:05:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2507. [2022-01-10 20:05:47,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.4788507581803672) internal successors, (3706), 2506 states have internal predecessors, (3706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:47,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3706 transitions. [2022-01-10 20:05:47,558 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3706 transitions. Word has length 143 [2022-01-10 20:05:47,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:47,559 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3706 transitions. [2022-01-10 20:05:47,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:47,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3706 transitions. [2022-01-10 20:05:47,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:47,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:47,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:47,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 20:05:47,561 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:47,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:47,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1233267540, now seen corresponding path program 1 times [2022-01-10 20:05:47,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:47,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528016454] [2022-01-10 20:05:47,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:47,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:47,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:47,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528016454] [2022-01-10 20:05:47,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528016454] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:47,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:47,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:47,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150256445] [2022-01-10 20:05:47,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:47,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:47,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:47,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:47,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:47,620 INFO L87 Difference]: Start difference. First operand 2507 states and 3706 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:47,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:47,716 INFO L93 Difference]: Finished difference Result 4995 states and 7383 transitions. [2022-01-10 20:05:47,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:47,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:47,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:47,722 INFO L225 Difference]: With dead ends: 4995 [2022-01-10 20:05:47,722 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:47,727 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 [2022-01-10 20:05:47,727 INFO L933 BasicCegarLoop]: 2013 mSDtfsCounter, 2000 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2000 SdHoareTripleChecker+Valid, 2013 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 [2022-01-10 20:05:47,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2000 Valid, 2013 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:47,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:47,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.475658419792498) internal successors, (3698), 2506 states have internal predecessors, (3698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:47,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3698 transitions. [2022-01-10 20:05:47,818 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3698 transitions. Word has length 143 [2022-01-10 20:05:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:47,818 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3698 transitions. [2022-01-10 20:05:47,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3698 transitions. [2022-01-10 20:05:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:47,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:47,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:47,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 20:05:47,820 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:47,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:47,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1783749236, now seen corresponding path program 1 times [2022-01-10 20:05:47,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:47,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860403318] [2022-01-10 20:05:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:47,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:47,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:47,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:47,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860403318] [2022-01-10 20:05:47,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860403318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:47,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:47,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:47,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640344431] [2022-01-10 20:05:47,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:47,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:47,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:47,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:47,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:47,867 INFO L87 Difference]: Start difference. First operand 2507 states and 3698 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:47,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:47,958 INFO L93 Difference]: Finished difference Result 4994 states and 7366 transitions. [2022-01-10 20:05:47,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:47,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:47,964 INFO L225 Difference]: With dead ends: 4994 [2022-01-10 20:05:47,964 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:47,967 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 [2022-01-10 20:05:47,968 INFO L933 BasicCegarLoop]: 2008 mSDtfsCounter, 1994 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 2008 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 [2022-01-10 20:05:47,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1994 Valid, 2008 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:47,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:48,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:48,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.4724660814046289) internal successors, (3690), 2506 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3690 transitions. [2022-01-10 20:05:48,086 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3690 transitions. Word has length 143 [2022-01-10 20:05:48,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:48,086 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3690 transitions. [2022-01-10 20:05:48,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3690 transitions. [2022-01-10 20:05:48,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:48,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:48,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:48,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 20:05:48,088 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:48,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:48,089 INFO L85 PathProgramCache]: Analyzing trace with hash 415250604, now seen corresponding path program 1 times [2022-01-10 20:05:48,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:48,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127387969] [2022-01-10 20:05:48,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:48,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:48,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:48,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127387969] [2022-01-10 20:05:48,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127387969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:48,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:48,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:48,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508052484] [2022-01-10 20:05:48,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:48,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:48,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:48,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:48,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:48,135 INFO L87 Difference]: Start difference. First operand 2507 states and 3690 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:48,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:48,226 INFO L93 Difference]: Finished difference Result 4993 states and 7349 transitions. [2022-01-10 20:05:48,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:48,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:48,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:48,231 INFO L225 Difference]: With dead ends: 4993 [2022-01-10 20:05:48,231 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:48,234 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 [2022-01-10 20:05:48,234 INFO L933 BasicCegarLoop]: 2003 mSDtfsCounter, 1988 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 2003 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 [2022-01-10 20:05:48,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1988 Valid, 2003 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:48,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:48,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:48,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.4692737430167597) internal successors, (3682), 2506 states have internal predecessors, (3682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:48,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3682 transitions. [2022-01-10 20:05:48,327 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3682 transitions. Word has length 143 [2022-01-10 20:05:48,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:48,327 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3682 transitions. [2022-01-10 20:05:48,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3682 transitions. [2022-01-10 20:05:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:48,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:48,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:48,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 20:05:48,329 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:48,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:48,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1871659404, now seen corresponding path program 1 times [2022-01-10 20:05:48,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:48,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560547518] [2022-01-10 20:05:48,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:48,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:48,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:48,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:48,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560547518] [2022-01-10 20:05:48,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560547518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:48,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:48,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:48,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038493268] [2022-01-10 20:05:48,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:48,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:48,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:48,375 INFO L87 Difference]: Start difference. First operand 2507 states and 3682 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:48,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:48,489 INFO L93 Difference]: Finished difference Result 4992 states and 7332 transitions. [2022-01-10 20:05:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:48,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:48,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:48,495 INFO L225 Difference]: With dead ends: 4992 [2022-01-10 20:05:48,495 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:48,498 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 [2022-01-10 20:05:48,499 INFO L933 BasicCegarLoop]: 1998 mSDtfsCounter, 1982 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 1998 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 [2022-01-10 20:05:48,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 1998 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:48,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:48,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:48,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.4660814046288906) internal successors, (3674), 2506 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3674 transitions. [2022-01-10 20:05:48,647 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3674 transitions. Word has length 143 [2022-01-10 20:05:48,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:48,648 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3674 transitions. [2022-01-10 20:05:48,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:48,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3674 transitions. [2022-01-10 20:05:48,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:48,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:48,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:48,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 20:05:48,649 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:48,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:48,650 INFO L85 PathProgramCache]: Analyzing trace with hash 810261676, now seen corresponding path program 1 times [2022-01-10 20:05:48,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:48,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809136607] [2022-01-10 20:05:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:48,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:48,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:48,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809136607] [2022-01-10 20:05:48,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809136607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:48,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:48,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:48,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476162635] [2022-01-10 20:05:48,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:48,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:48,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:48,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:48,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:48,713 INFO L87 Difference]: Start difference. First operand 2507 states and 3674 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:48,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:48,833 INFO L93 Difference]: Finished difference Result 4990 states and 7313 transitions. [2022-01-10 20:05:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:48,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:48,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:48,839 INFO L225 Difference]: With dead ends: 4990 [2022-01-10 20:05:48,840 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:48,844 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 [2022-01-10 20:05:48,844 INFO L933 BasicCegarLoop]: 1993 mSDtfsCounter, 1975 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1975 SdHoareTripleChecker+Valid, 1993 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 [2022-01-10 20:05:48,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1975 Valid, 1993 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:48,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:48,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:48,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.4628890662410214) internal successors, (3666), 2506 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3666 transitions. [2022-01-10 20:05:48,947 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3666 transitions. Word has length 143 [2022-01-10 20:05:48,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:48,948 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3666 transitions. [2022-01-10 20:05:48,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:48,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3666 transitions. [2022-01-10 20:05:48,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:48,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:48,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:48,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 20:05:48,950 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:48,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:48,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1532739636, now seen corresponding path program 1 times [2022-01-10 20:05:48,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:48,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108091492] [2022-01-10 20:05:48,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:48,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:49,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:49,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108091492] [2022-01-10 20:05:49,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108091492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:49,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:49,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:49,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161465303] [2022-01-10 20:05:49,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:49,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:49,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:49,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:49,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:49,013 INFO L87 Difference]: Start difference. First operand 2507 states and 3666 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:49,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:49,133 INFO L93 Difference]: Finished difference Result 4989 states and 7296 transitions. [2022-01-10 20:05:49,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:49,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:49,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:49,139 INFO L225 Difference]: With dead ends: 4989 [2022-01-10 20:05:49,139 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:49,143 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 [2022-01-10 20:05:49,143 INFO L933 BasicCegarLoop]: 1988 mSDtfsCounter, 1969 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 1988 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 [2022-01-10 20:05:49,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1969 Valid, 1988 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:49,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:49,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.4596967278531525) internal successors, (3658), 2506 states have internal predecessors, (3658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:49,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3658 transitions. [2022-01-10 20:05:49,291 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3658 transitions. Word has length 143 [2022-01-10 20:05:49,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:49,292 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3658 transitions. [2022-01-10 20:05:49,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:49,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3658 transitions. [2022-01-10 20:05:49,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:49,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:49,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:49,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 20:05:49,294 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:49,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:49,294 INFO L85 PathProgramCache]: Analyzing trace with hash 2132457644, now seen corresponding path program 1 times [2022-01-10 20:05:49,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:49,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899060057] [2022-01-10 20:05:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:49,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:49,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:49,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899060057] [2022-01-10 20:05:49,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899060057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:49,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:49,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:49,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305922419] [2022-01-10 20:05:49,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:49,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:49,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:49,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:49,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:49,341 INFO L87 Difference]: Start difference. First operand 2507 states and 3658 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:49,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:49,453 INFO L93 Difference]: Finished difference Result 4988 states and 7279 transitions. [2022-01-10 20:05:49,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:49,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:49,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:49,458 INFO L225 Difference]: With dead ends: 4988 [2022-01-10 20:05:49,459 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:49,461 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 [2022-01-10 20:05:49,462 INFO L933 BasicCegarLoop]: 1983 mSDtfsCounter, 1963 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 1983 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 [2022-01-10 20:05:49,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1963 Valid, 1983 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:49,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:49,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:49,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.4565043894652834) internal successors, (3650), 2506 states have internal predecessors, (3650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:49,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3650 transitions. [2022-01-10 20:05:49,576 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3650 transitions. Word has length 143 [2022-01-10 20:05:49,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:49,576 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3650 transitions. [2022-01-10 20:05:49,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:49,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3650 transitions. [2022-01-10 20:05:49,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:49,577 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:49,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:49,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 20:05:49,578 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:49,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:49,579 INFO L85 PathProgramCache]: Analyzing trace with hash -243162164, now seen corresponding path program 1 times [2022-01-10 20:05:49,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:49,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115415453] [2022-01-10 20:05:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:49,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:49,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:49,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115415453] [2022-01-10 20:05:49,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115415453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:49,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:49,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:49,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092589895] [2022-01-10 20:05:49,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:49,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:49,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:49,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:49,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:49,637 INFO L87 Difference]: Start difference. First operand 2507 states and 3650 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:49,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:49,766 INFO L93 Difference]: Finished difference Result 4987 states and 7262 transitions. [2022-01-10 20:05:49,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:49,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:49,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:49,772 INFO L225 Difference]: With dead ends: 4987 [2022-01-10 20:05:49,772 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:49,776 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 [2022-01-10 20:05:49,776 INFO L933 BasicCegarLoop]: 1978 mSDtfsCounter, 1957 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 1978 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 [2022-01-10 20:05:49,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1957 Valid, 1978 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:49,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:49,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.4533120510774142) internal successors, (3642), 2506 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3642 transitions. [2022-01-10 20:05:50,006 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3642 transitions. Word has length 143 [2022-01-10 20:05:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:50,006 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3642 transitions. [2022-01-10 20:05:50,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:50,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3642 transitions. [2022-01-10 20:05:50,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:50,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:50,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:50,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 20:05:50,008 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:50,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:50,009 INFO L85 PathProgramCache]: Analyzing trace with hash 788583596, now seen corresponding path program 1 times [2022-01-10 20:05:50,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:50,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471158567] [2022-01-10 20:05:50,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:50,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:50,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:50,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471158567] [2022-01-10 20:05:50,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471158567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:50,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:50,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:50,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557568754] [2022-01-10 20:05:50,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:50,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:50,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:50,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:50,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:50,071 INFO L87 Difference]: Start difference. First operand 2507 states and 3642 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:50,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:50,276 INFO L93 Difference]: Finished difference Result 4986 states and 7245 transitions. [2022-01-10 20:05:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:50,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:50,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:50,282 INFO L225 Difference]: With dead ends: 4986 [2022-01-10 20:05:50,282 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:50,286 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 [2022-01-10 20:05:50,286 INFO L933 BasicCegarLoop]: 1973 mSDtfsCounter, 1951 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 1973 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 [2022-01-10 20:05:50,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1951 Valid, 1973 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:50,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:50,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:50,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.450119712689545) internal successors, (3634), 2506 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:50,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3634 transitions. [2022-01-10 20:05:50,406 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3634 transitions. Word has length 143 [2022-01-10 20:05:50,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:50,406 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3634 transitions. [2022-01-10 20:05:50,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:50,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3634 transitions. [2022-01-10 20:05:50,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:50,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:50,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:50,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 20:05:50,408 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:50,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:50,409 INFO L85 PathProgramCache]: Analyzing trace with hash -563607604, now seen corresponding path program 1 times [2022-01-10 20:05:50,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:50,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252080419] [2022-01-10 20:05:50,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:50,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:50,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:50,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:50,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252080419] [2022-01-10 20:05:50,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252080419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:50,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:50,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:50,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269468685] [2022-01-10 20:05:50,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:50,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:50,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:50,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:50,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:50,461 INFO L87 Difference]: Start difference. First operand 2507 states and 3634 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:50,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:50,601 INFO L93 Difference]: Finished difference Result 4985 states and 7228 transitions. [2022-01-10 20:05:50,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:50,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:50,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:50,606 INFO L225 Difference]: With dead ends: 4985 [2022-01-10 20:05:50,606 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:50,609 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 [2022-01-10 20:05:50,610 INFO L933 BasicCegarLoop]: 1942 mSDtfsCounter, 1820 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1820 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:50,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1820 Valid, 2050 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:50,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:50,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:50,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.4373503591380687) internal successors, (3602), 2506 states have internal predecessors, (3602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3602 transitions. [2022-01-10 20:05:50,789 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3602 transitions. Word has length 143 [2022-01-10 20:05:50,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:50,789 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3602 transitions. [2022-01-10 20:05:50,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:50,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3602 transitions. [2022-01-10 20:05:50,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:50,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:50,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:50,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 20:05:50,791 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:50,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:50,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1843439915, now seen corresponding path program 1 times [2022-01-10 20:05:50,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:50,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793235528] [2022-01-10 20:05:50,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:50,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:50,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:50,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:50,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793235528] [2022-01-10 20:05:50,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793235528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:50,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:50,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:50,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533365201] [2022-01-10 20:05:50,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:50,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:50,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:50,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:50,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:50,870 INFO L87 Difference]: Start difference. First operand 2507 states and 3602 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:51,023 INFO L93 Difference]: Finished difference Result 4984 states and 7163 transitions. [2022-01-10 20:05:51,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:51,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:51,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:51,028 INFO L225 Difference]: With dead ends: 4984 [2022-01-10 20:05:51,028 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:51,032 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 [2022-01-10 20:05:51,036 INFO L933 BasicCegarLoop]: 1924 mSDtfsCounter, 1802 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 2031 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:51,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1802 Valid, 2031 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:51,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:51,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.4245810055865922) internal successors, (3570), 2506 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3570 transitions. [2022-01-10 20:05:51,146 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3570 transitions. Word has length 143 [2022-01-10 20:05:51,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:51,146 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3570 transitions. [2022-01-10 20:05:51,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:51,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3570 transitions. [2022-01-10 20:05:51,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:51,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:51,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:51,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 20:05:51,148 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:51,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:51,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1636505590, now seen corresponding path program 1 times [2022-01-10 20:05:51,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:51,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058218230] [2022-01-10 20:05:51,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:51,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:51,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:51,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058218230] [2022-01-10 20:05:51,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058218230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:51,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:51,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:51,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453393940] [2022-01-10 20:05:51,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:51,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:51,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:51,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:51,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:51,186 INFO L87 Difference]: Start difference. First operand 2507 states and 3570 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:51,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:51,327 INFO L93 Difference]: Finished difference Result 4983 states and 7098 transitions. [2022-01-10 20:05:51,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:51,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:51,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:51,332 INFO L225 Difference]: With dead ends: 4983 [2022-01-10 20:05:51,332 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:51,337 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 [2022-01-10 20:05:51,338 INFO L933 BasicCegarLoop]: 1906 mSDtfsCounter, 1784 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:51,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1784 Valid, 2012 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:51,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:51,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.4118116520351158) internal successors, (3538), 2506 states have internal predecessors, (3538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:51,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3538 transitions. [2022-01-10 20:05:51,467 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3538 transitions. Word has length 143 [2022-01-10 20:05:51,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:51,467 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3538 transitions. [2022-01-10 20:05:51,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:51,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3538 transitions. [2022-01-10 20:05:51,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:51,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:51,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:51,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 20:05:51,468 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:51,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:51,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2080651287, now seen corresponding path program 1 times [2022-01-10 20:05:51,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:51,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131256444] [2022-01-10 20:05:51,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:51,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:51,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:51,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131256444] [2022-01-10 20:05:51,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131256444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:51,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:51,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:51,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451870988] [2022-01-10 20:05:51,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:51,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:51,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:51,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:51,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:51,522 INFO L87 Difference]: Start difference. First operand 2507 states and 3538 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:51,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:51,716 INFO L93 Difference]: Finished difference Result 4982 states and 7033 transitions. [2022-01-10 20:05:51,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:51,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:51,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:51,723 INFO L225 Difference]: With dead ends: 4982 [2022-01-10 20:05:51,723 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:51,726 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 [2022-01-10 20:05:51,727 INFO L933 BasicCegarLoop]: 1888 mSDtfsCounter, 1766 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:51,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1766 Valid, 1993 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:51,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:51,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.3990422984836393) internal successors, (3506), 2506 states have internal predecessors, (3506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3506 transitions. [2022-01-10 20:05:51,841 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3506 transitions. Word has length 143 [2022-01-10 20:05:51,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:51,842 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3506 transitions. [2022-01-10 20:05:51,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:51,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3506 transitions. [2022-01-10 20:05:51,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:51,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:51,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:51,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 20:05:51,843 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:51,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:51,844 INFO L85 PathProgramCache]: Analyzing trace with hash 606385480, now seen corresponding path program 1 times [2022-01-10 20:05:51,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:51,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852186990] [2022-01-10 20:05:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:51,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:51,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:51,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852186990] [2022-01-10 20:05:51,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852186990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:51,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:51,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:51,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419411032] [2022-01-10 20:05:51,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:51,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:51,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:51,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:51,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:51,888 INFO L87 Difference]: Start difference. First operand 2507 states and 3506 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:52,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:52,143 INFO L93 Difference]: Finished difference Result 4981 states and 6968 transitions. [2022-01-10 20:05:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:52,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:52,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:52,149 INFO L225 Difference]: With dead ends: 4981 [2022-01-10 20:05:52,149 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:52,152 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 [2022-01-10 20:05:52,153 INFO L933 BasicCegarLoop]: 1870 mSDtfsCounter, 1748 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 1974 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:52,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1748 Valid, 1974 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:05:52,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:52,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.386272944932163) internal successors, (3474), 2506 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:52,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3474 transitions. [2022-01-10 20:05:52,274 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3474 transitions. Word has length 143 [2022-01-10 20:05:52,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:52,274 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3474 transitions. [2022-01-10 20:05:52,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:52,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3474 transitions. [2022-01-10 20:05:52,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:52,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:52,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:52,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 20:05:52,276 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:52,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:52,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1296198745, now seen corresponding path program 1 times [2022-01-10 20:05:52,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:52,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880591843] [2022-01-10 20:05:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:52,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:52,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:52,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880591843] [2022-01-10 20:05:52,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880591843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:52,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:52,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:52,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031281994] [2022-01-10 20:05:52,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:52,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:52,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:52,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:52,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:52,318 INFO L87 Difference]: Start difference. First operand 2507 states and 3474 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:52,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:52,480 INFO L93 Difference]: Finished difference Result 4980 states and 6903 transitions. [2022-01-10 20:05:52,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:52,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:52,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:52,485 INFO L225 Difference]: With dead ends: 4980 [2022-01-10 20:05:52,485 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:52,488 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 [2022-01-10 20:05:52,490 INFO L933 BasicCegarLoop]: 1852 mSDtfsCounter, 1730 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:52,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1730 Valid, 1955 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:52,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:52,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.3735035913806863) internal successors, (3442), 2506 states have internal predecessors, (3442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:52,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3442 transitions. [2022-01-10 20:05:52,634 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3442 transitions. Word has length 143 [2022-01-10 20:05:52,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:52,634 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3442 transitions. [2022-01-10 20:05:52,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:52,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3442 transitions. [2022-01-10 20:05:52,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:52,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:52,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:52,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 20:05:52,636 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:52,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:52,636 INFO L85 PathProgramCache]: Analyzing trace with hash -881660026, now seen corresponding path program 1 times [2022-01-10 20:05:52,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:52,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929641385] [2022-01-10 20:05:52,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:52,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:52,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:52,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929641385] [2022-01-10 20:05:52,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929641385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:52,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:52,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:52,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227704034] [2022-01-10 20:05:52,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:52,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:52,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:52,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:52,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:52,698 INFO L87 Difference]: Start difference. First operand 2507 states and 3442 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:52,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:52,918 INFO L93 Difference]: Finished difference Result 4979 states and 6838 transitions. [2022-01-10 20:05:52,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:52,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:52,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:52,923 INFO L225 Difference]: With dead ends: 4979 [2022-01-10 20:05:52,923 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:52,927 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 [2022-01-10 20:05:52,928 INFO L933 BasicCegarLoop]: 1834 mSDtfsCounter, 1712 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:52,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1712 Valid, 1936 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:52,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:53,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:53,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.36073423782921) internal successors, (3410), 2506 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:53,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3410 transitions. [2022-01-10 20:05:53,081 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3410 transitions. Word has length 143 [2022-01-10 20:05:53,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:53,081 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3410 transitions. [2022-01-10 20:05:53,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:53,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3410 transitions. [2022-01-10 20:05:53,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:53,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:53,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:53,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 20:05:53,083 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:53,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:53,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1145146469, now seen corresponding path program 1 times [2022-01-10 20:05:53,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:53,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023126129] [2022-01-10 20:05:53,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:53,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:53,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:53,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:53,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023126129] [2022-01-10 20:05:53,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023126129] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:53,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:53,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:53,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977743975] [2022-01-10 20:05:53,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:53,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:53,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:53,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:53,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:53,134 INFO L87 Difference]: Start difference. First operand 2507 states and 3410 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:53,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:53,310 INFO L93 Difference]: Finished difference Result 4978 states and 6773 transitions. [2022-01-10 20:05:53,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:53,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:53,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:53,315 INFO L225 Difference]: With dead ends: 4978 [2022-01-10 20:05:53,315 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:53,320 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 [2022-01-10 20:05:53,321 INFO L933 BasicCegarLoop]: 1816 mSDtfsCounter, 1694 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:53,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1694 Valid, 1917 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:53,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:53,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:53,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.3479648842777334) internal successors, (3378), 2506 states have internal predecessors, (3378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:53,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3378 transitions. [2022-01-10 20:05:53,414 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3378 transitions. Word has length 143 [2022-01-10 20:05:53,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:53,414 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3378 transitions. [2022-01-10 20:05:53,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3378 transitions. [2022-01-10 20:05:53,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:53,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:53,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:53,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 20:05:53,415 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:53,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:53,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1650780476, now seen corresponding path program 1 times [2022-01-10 20:05:53,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:53,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571752012] [2022-01-10 20:05:53,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:53,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:53,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:53,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571752012] [2022-01-10 20:05:53,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571752012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:53,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:53,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:53,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31958117] [2022-01-10 20:05:53,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:53,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:53,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:53,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:53,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:53,459 INFO L87 Difference]: Start difference. First operand 2507 states and 3378 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:53,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:53,635 INFO L93 Difference]: Finished difference Result 4977 states and 6708 transitions. [2022-01-10 20:05:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:53,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:53,639 INFO L225 Difference]: With dead ends: 4977 [2022-01-10 20:05:53,639 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:53,641 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 [2022-01-10 20:05:53,642 INFO L933 BasicCegarLoop]: 1798 mSDtfsCounter, 1676 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:53,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1676 Valid, 1898 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:53,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:53,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:53,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.335195530726257) internal successors, (3346), 2506 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:53,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3346 transitions. [2022-01-10 20:05:53,775 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3346 transitions. Word has length 143 [2022-01-10 20:05:53,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:53,776 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3346 transitions. [2022-01-10 20:05:53,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:53,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3346 transitions. [2022-01-10 20:05:53,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:53,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:53,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:53,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 20:05:53,777 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:53,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:53,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1887709, now seen corresponding path program 1 times [2022-01-10 20:05:53,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:53,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395735573] [2022-01-10 20:05:53,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:53,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:53,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:53,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395735573] [2022-01-10 20:05:53,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395735573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:53,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:53,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:53,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986554095] [2022-01-10 20:05:53,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:53,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:53,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:53,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:53,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:53,910 INFO L87 Difference]: Start difference. First operand 2507 states and 3346 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:54,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:54,138 INFO L93 Difference]: Finished difference Result 4976 states and 6643 transitions. [2022-01-10 20:05:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:54,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:54,143 INFO L225 Difference]: With dead ends: 4976 [2022-01-10 20:05:54,143 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:54,146 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 [2022-01-10 20:05:54,146 INFO L933 BasicCegarLoop]: 1780 mSDtfsCounter, 1658 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:54,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1658 Valid, 1879 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:05:54,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:54,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:54,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.3224261771747805) internal successors, (3314), 2506 states have internal predecessors, (3314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:54,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3314 transitions. [2022-01-10 20:05:54,251 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3314 transitions. Word has length 143 [2022-01-10 20:05:54,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:54,252 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3314 transitions. [2022-01-10 20:05:54,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:54,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3314 transitions. [2022-01-10 20:05:54,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:54,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:54,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:54,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 20:05:54,253 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:54,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:54,253 INFO L85 PathProgramCache]: Analyzing trace with hash 823700226, now seen corresponding path program 1 times [2022-01-10 20:05:54,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:54,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983807466] [2022-01-10 20:05:54,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:54,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:54,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:54,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983807466] [2022-01-10 20:05:54,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983807466] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:54,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:54,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:54,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904816666] [2022-01-10 20:05:54,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:54,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:54,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:54,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:54,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:54,292 INFO L87 Difference]: Start difference. First operand 2507 states and 3314 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:54,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:54,486 INFO L93 Difference]: Finished difference Result 4975 states and 6578 transitions. [2022-01-10 20:05:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:54,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:54,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:54,491 INFO L225 Difference]: With dead ends: 4975 [2022-01-10 20:05:54,491 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 20:05:54,494 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 [2022-01-10 20:05:54,494 INFO L933 BasicCegarLoop]: 1762 mSDtfsCounter, 1640 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:54,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1640 Valid, 1860 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:54,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 20:05:54,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 20:05:54,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.3096568236233042) internal successors, (3282), 2506 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:54,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3282 transitions. [2022-01-10 20:05:54,636 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3282 transitions. Word has length 143 [2022-01-10 20:05:54,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:54,636 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3282 transitions. [2022-01-10 20:05:54,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:54,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3282 transitions. [2022-01-10 20:05:54,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:54,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:54,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:54,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 20:05:54,640 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:54,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:54,640 INFO L85 PathProgramCache]: Analyzing trace with hash 171836641, now seen corresponding path program 1 times [2022-01-10 20:05:54,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:54,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75180792] [2022-01-10 20:05:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:54,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:54,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:54,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75180792] [2022-01-10 20:05:54,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75180792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:54,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:54,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:05:54,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798567317] [2022-01-10 20:05:54,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:54,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:05:54,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:54,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:05:54,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:05:54,716 INFO L87 Difference]: Start difference. First operand 2507 states and 3282 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:55,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:55,096 INFO L93 Difference]: Finished difference Result 5778 states and 7630 transitions. [2022-01-10 20:05:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:05:55,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:55,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:55,104 INFO L225 Difference]: With dead ends: 5778 [2022-01-10 20:05:55,104 INFO L226 Difference]: Without dead ends: 3317 [2022-01-10 20:05:55,107 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 [2022-01-10 20:05:55,108 INFO L933 BasicCegarLoop]: 1912 mSDtfsCounter, 5071 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5071 SdHoareTripleChecker+Valid, 3561 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:55,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5071 Valid, 3561 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:05:55,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3317 states. [2022-01-10 20:05:55,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3317 to 2513. [2022-01-10 20:05:55,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 2512 states have (on average 1.2993630573248407) internal successors, (3264), 2512 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 3264 transitions. [2022-01-10 20:05:55,347 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 3264 transitions. Word has length 143 [2022-01-10 20:05:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:55,347 INFO L470 AbstractCegarLoop]: Abstraction has 2513 states and 3264 transitions. [2022-01-10 20:05:55,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 3264 transitions. [2022-01-10 20:05:55,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:55,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:55,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:55,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 20:05:55,348 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:55,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:55,349 INFO L85 PathProgramCache]: Analyzing trace with hash 687357090, now seen corresponding path program 1 times [2022-01-10 20:05:55,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:55,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031887881] [2022-01-10 20:05:55,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:55,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:55,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:55,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031887881] [2022-01-10 20:05:55,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031887881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:55,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:55,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:05:55,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934541639] [2022-01-10 20:05:55,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:55,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:05:55,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:55,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:05:55,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:05:55,452 INFO L87 Difference]: Start difference. First operand 2513 states and 3264 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:55,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:55,925 INFO L93 Difference]: Finished difference Result 6062 states and 7925 transitions. [2022-01-10 20:05:55,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:05:55,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:55,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:55,933 INFO L225 Difference]: With dead ends: 6062 [2022-01-10 20:05:55,933 INFO L226 Difference]: Without dead ends: 3609 [2022-01-10 20:05:55,936 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 [2022-01-10 20:05:55,937 INFO L933 BasicCegarLoop]: 1863 mSDtfsCounter, 4757 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4757 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:55,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4757 Valid, 4135 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 20:05:55,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3609 states. [2022-01-10 20:05:56,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3609 to 2519. [2022-01-10 20:05:56,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2518 states have (on average 1.289118347895155) internal successors, (3246), 2518 states have internal predecessors, (3246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:56,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3246 transitions. [2022-01-10 20:05:56,146 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3246 transitions. Word has length 143 [2022-01-10 20:05:56,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:56,147 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3246 transitions. [2022-01-10 20:05:56,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:56,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3246 transitions. [2022-01-10 20:05:56,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:56,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:56,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:56,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-10 20:05:56,148 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:56,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:56,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1753264669, now seen corresponding path program 1 times [2022-01-10 20:05:56,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:56,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354681536] [2022-01-10 20:05:56,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:56,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:56,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:56,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354681536] [2022-01-10 20:05:56,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354681536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:56,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:56,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:05:56,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081522258] [2022-01-10 20:05:56,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:56,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:05:56,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:56,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:05:56,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:05:56,243 INFO L87 Difference]: Start difference. First operand 2519 states and 3246 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:56,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:56,915 INFO L93 Difference]: Finished difference Result 6213 states and 8047 transitions. [2022-01-10 20:05:56,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:05:56,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:56,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:56,921 INFO L225 Difference]: With dead ends: 6213 [2022-01-10 20:05:56,921 INFO L226 Difference]: Without dead ends: 3761 [2022-01-10 20:05:56,925 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 [2022-01-10 20:05:56,928 INFO L933 BasicCegarLoop]: 1832 mSDtfsCounter, 4588 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4588 SdHoareTripleChecker+Valid, 4385 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:56,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4588 Valid, 4385 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 20:05:56,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2022-01-10 20:05:57,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 2525. [2022-01-10 20:05:57,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2525 states, 2524 states have (on average 1.2789223454833598) internal successors, (3228), 2524 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:57,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 3228 transitions. [2022-01-10 20:05:57,167 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 3228 transitions. Word has length 143 [2022-01-10 20:05:57,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:57,167 INFO L470 AbstractCegarLoop]: Abstraction has 2525 states and 3228 transitions. [2022-01-10 20:05:57,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:57,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 3228 transitions. [2022-01-10 20:05:57,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:57,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:57,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:57,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 20:05:57,169 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:57,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:57,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2012783588, now seen corresponding path program 1 times [2022-01-10 20:05:57,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:57,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679921092] [2022-01-10 20:05:57,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:57,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:57,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:57,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:57,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679921092] [2022-01-10 20:05:57,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679921092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:57,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:57,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:57,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180361439] [2022-01-10 20:05:57,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:57,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:57,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:57,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:57,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:57,230 INFO L87 Difference]: Start difference. First operand 2525 states and 3228 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:57,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:57,465 INFO L93 Difference]: Finished difference Result 5027 states and 6423 transitions. [2022-01-10 20:05:57,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:57,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:57,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:57,469 INFO L225 Difference]: With dead ends: 5027 [2022-01-10 20:05:57,469 INFO L226 Difference]: Without dead ends: 2525 [2022-01-10 20:05:57,472 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 [2022-01-10 20:05:57,473 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 1625 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 1731 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 [2022-01-10 20:05:57,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1625 Valid, 1731 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:57,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2022-01-10 20:05:57,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2525. [2022-01-10 20:05:57,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2525 states, 2524 states have (on average 1.2757527733755942) internal successors, (3220), 2524 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:57,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 3220 transitions. [2022-01-10 20:05:57,715 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 3220 transitions. Word has length 143 [2022-01-10 20:05:57,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:57,715 INFO L470 AbstractCegarLoop]: Abstraction has 2525 states and 3220 transitions. [2022-01-10 20:05:57,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:57,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 3220 transitions. [2022-01-10 20:05:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:05:57,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:57,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:57,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-10 20:05:57,716 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:57,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:57,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2679747, now seen corresponding path program 1 times [2022-01-10 20:05:57,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:57,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298920871] [2022-01-10 20:05:57,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:57,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:57,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:57,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:57,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298920871] [2022-01-10 20:05:57,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298920871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:57,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:57,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:05:57,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221815887] [2022-01-10 20:05:57,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:57,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:57,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:57,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:57,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:57,772 INFO L87 Difference]: Start difference. First operand 2525 states and 3220 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:58,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:58,226 INFO L93 Difference]: Finished difference Result 7354 states and 9394 transitions. [2022-01-10 20:05:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:58,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 20:05:58,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:58,232 INFO L225 Difference]: With dead ends: 7354 [2022-01-10 20:05:58,232 INFO L226 Difference]: Without dead ends: 4870 [2022-01-10 20:05:58,234 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 [2022-01-10 20:05:58,234 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1559 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:58,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1559 Valid, 3256 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:58,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2022-01-10 20:05:58,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 4718. [2022-01-10 20:05:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4718 states, 4717 states have (on average 1.2734789060843756) internal successors, (6007), 4717 states have internal predecessors, (6007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4718 states to 4718 states and 6007 transitions. [2022-01-10 20:05:58,580 INFO L78 Accepts]: Start accepts. Automaton has 4718 states and 6007 transitions. Word has length 143 [2022-01-10 20:05:58,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:05:58,580 INFO L470 AbstractCegarLoop]: Abstraction has 4718 states and 6007 transitions. [2022-01-10 20:05:58,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:58,580 INFO L276 IsEmpty]: Start isEmpty. Operand 4718 states and 6007 transitions. [2022-01-10 20:05:58,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 20:05:58,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:05:58,584 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:05:58,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-10 20:05:58,585 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:05:58,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:05:58,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1804608141, now seen corresponding path program 1 times [2022-01-10 20:05:58,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:05:58,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034692596] [2022-01-10 20:05:58,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:05:58,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:05:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:05:58,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:05:58,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:05:58,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034692596] [2022-01-10 20:05:58,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034692596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:05:58,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:05:58,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:05:58,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865105232] [2022-01-10 20:05:58,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:05:58,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:05:58,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:05:58,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:05:58,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:58,657 INFO L87 Difference]: Start difference. First operand 4718 states and 6007 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:05:59,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:05:59,366 INFO L93 Difference]: Finished difference Result 13881 states and 17703 transitions. [2022-01-10 20:05:59,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:05:59,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-01-10 20:05:59,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:05:59,375 INFO L225 Difference]: With dead ends: 13881 [2022-01-10 20:05:59,375 INFO L226 Difference]: Without dead ends: 9210 [2022-01-10 20:05:59,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:05:59,378 INFO L933 BasicCegarLoop]: 1716 mSDtfsCounter, 1589 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 3253 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:05:59,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 3253 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:05:59,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9210 states. [2022-01-10 20:06:00,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9210 to 8912. [2022-01-10 20:06:00,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8912 states, 8911 states have (on average 1.2715744585343958) internal successors, (11331), 8911 states have internal predecessors, (11331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8912 states to 8912 states and 11331 transitions. [2022-01-10 20:06:00,067 INFO L78 Accepts]: Start accepts. Automaton has 8912 states and 11331 transitions. Word has length 232 [2022-01-10 20:06:00,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:06:00,067 INFO L470 AbstractCegarLoop]: Abstraction has 8912 states and 11331 transitions. [2022-01-10 20:06:00,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 8912 states and 11331 transitions. [2022-01-10 20:06:00,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 20:06:00,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:06:00,074 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:06:00,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-10 20:06:00,074 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:06:00,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:06:00,075 INFO L85 PathProgramCache]: Analyzing trace with hash 728166228, now seen corresponding path program 1 times [2022-01-10 20:06:00,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:06:00,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299209171] [2022-01-10 20:06:00,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:06:00,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:06:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:06:00,153 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:06:00,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:06:00,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299209171] [2022-01-10 20:06:00,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299209171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:06:00,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:06:00,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:06:00,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746289815] [2022-01-10 20:06:00,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:06:00,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:06:00,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:06:00,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:06:00,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:06:00,157 INFO L87 Difference]: Start difference. First operand 8912 states and 11331 transitions. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:01,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:06:01,628 INFO L93 Difference]: Finished difference Result 24904 states and 31804 transitions. [2022-01-10 20:06:01,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:06:01,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-01-10 20:06:01,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:06:01,656 INFO L225 Difference]: With dead ends: 24904 [2022-01-10 20:06:01,657 INFO L226 Difference]: Without dead ends: 16092 [2022-01-10 20:06:01,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:06:01,672 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 3826 mSDsluCounter, 4086 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3826 SdHoareTripleChecker+Valid, 5806 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:06:01,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3826 Valid, 5806 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:06:01,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16092 states. [2022-01-10 20:06:02,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16092 to 8936. [2022-01-10 20:06:02,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8936 states, 8935 states have (on average 1.2613318410744263) internal successors, (11270), 8935 states have internal predecessors, (11270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:02,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8936 states to 8936 states and 11270 transitions. [2022-01-10 20:06:02,484 INFO L78 Accepts]: Start accepts. Automaton has 8936 states and 11270 transitions. Word has length 232 [2022-01-10 20:06:02,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:06:02,484 INFO L470 AbstractCegarLoop]: Abstraction has 8936 states and 11270 transitions. [2022-01-10 20:06:02,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:02,484 INFO L276 IsEmpty]: Start isEmpty. Operand 8936 states and 11270 transitions. [2022-01-10 20:06:02,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 20:06:02,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:06:02,490 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:06:02,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-10 20:06:02,490 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:06:02,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:06:02,491 INFO L85 PathProgramCache]: Analyzing trace with hash 418791762, now seen corresponding path program 1 times [2022-01-10 20:06:02,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:06:02,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394966236] [2022-01-10 20:06:02,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:06:02,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:06:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:06:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:06:02,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:06:02,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394966236] [2022-01-10 20:06:02,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394966236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:06:02,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:06:02,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:06:02,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298969727] [2022-01-10 20:06:02,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:06:02,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:06:02,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:06:02,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:06:02,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:06:02,558 INFO L87 Difference]: Start difference. First operand 8936 states and 11270 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:04,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:06:04,414 INFO L93 Difference]: Finished difference Result 26365 states and 33094 transitions. [2022-01-10 20:06:04,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:06:04,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-01-10 20:06:04,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:06:04,434 INFO L225 Difference]: With dead ends: 26365 [2022-01-10 20:06:04,435 INFO L226 Difference]: Without dead ends: 17567 [2022-01-10 20:06:04,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:06:04,448 INFO L933 BasicCegarLoop]: 2067 mSDtfsCounter, 1564 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 3752 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:06:04,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1564 Valid, 3752 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:06:04,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17567 states. [2022-01-10 20:06:05,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17567 to 17285. [2022-01-10 20:06:05,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17285 states, 17284 states have (on average 1.2500578569775516) internal successors, (21606), 17284 states have internal predecessors, (21606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:05,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17285 states to 17285 states and 21606 transitions. [2022-01-10 20:06:05,988 INFO L78 Accepts]: Start accepts. Automaton has 17285 states and 21606 transitions. Word has length 232 [2022-01-10 20:06:05,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:06:05,988 INFO L470 AbstractCegarLoop]: Abstraction has 17285 states and 21606 transitions. [2022-01-10 20:06:05,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:05,988 INFO L276 IsEmpty]: Start isEmpty. Operand 17285 states and 21606 transitions. [2022-01-10 20:06:05,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 20:06:05,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:06:05,998 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:06:05,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-10 20:06:05,998 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:06:05,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:06:05,999 INFO L85 PathProgramCache]: Analyzing trace with hash -380988945, now seen corresponding path program 1 times [2022-01-10 20:06:05,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:06:05,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099075716] [2022-01-10 20:06:05,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:06:05,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:06:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:06:06,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 20:06:06,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:06:06,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099075716] [2022-01-10 20:06:06,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099075716] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:06:06,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:06:06,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:06:06,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474208900] [2022-01-10 20:06:06,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:06:06,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:06:06,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:06:06,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:06:06,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:06:06,038 INFO L87 Difference]: Start difference. First operand 17285 states and 21606 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:07,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:06:07,777 INFO L93 Difference]: Finished difference Result 34388 states and 42997 transitions. [2022-01-10 20:06:07,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:06:07,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 232 [2022-01-10 20:06:07,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:06:07,794 INFO L225 Difference]: With dead ends: 34388 [2022-01-10 20:06:07,794 INFO L226 Difference]: Without dead ends: 17154 [2022-01-10 20:06:07,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:06:07,805 INFO L933 BasicCegarLoop]: 1717 mSDtfsCounter, 1712 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 1718 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 [2022-01-10 20:06:07,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1712 Valid, 1718 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:06:07,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17154 states. [2022-01-10 20:06:09,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17154 to 17154. [2022-01-10 20:06:09,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17154 states, 17153 states have (on average 1.2505684136885675) internal successors, (21451), 17153 states have internal predecessors, (21451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:09,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17154 states to 17154 states and 21451 transitions. [2022-01-10 20:06:09,539 INFO L78 Accepts]: Start accepts. Automaton has 17154 states and 21451 transitions. Word has length 232 [2022-01-10 20:06:09,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:06:09,540 INFO L470 AbstractCegarLoop]: Abstraction has 17154 states and 21451 transitions. [2022-01-10 20:06:09,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:09,540 INFO L276 IsEmpty]: Start isEmpty. Operand 17154 states and 21451 transitions. [2022-01-10 20:06:09,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-10 20:06:09,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:06:09,550 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:06:09,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-10 20:06:09,550 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:06:09,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:06:09,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1019897131, now seen corresponding path program 1 times [2022-01-10 20:06:09,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:06:09,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435781084] [2022-01-10 20:06:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:06:09,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:06:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:06:09,627 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:06:09,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:06:09,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435781084] [2022-01-10 20:06:09,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435781084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:06:09,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:06:09,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:06:09,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703558227] [2022-01-10 20:06:09,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:06:09,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:06:09,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:06:09,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:06:09,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:06:09,629 INFO L87 Difference]: Start difference. First operand 17154 states and 21451 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:11,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:06:11,965 INFO L93 Difference]: Finished difference Result 49732 states and 62053 transitions. [2022-01-10 20:06:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:06:11,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2022-01-10 20:06:11,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:06:12,003 INFO L225 Difference]: With dead ends: 49732 [2022-01-10 20:06:12,004 INFO L226 Difference]: Without dead ends: 32716 [2022-01-10 20:06:12,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:06:12,022 INFO L933 BasicCegarLoop]: 2642 mSDtfsCounter, 1348 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 4338 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 [2022-01-10 20:06:12,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 4338 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:06:12,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32716 states. [2022-01-10 20:06:14,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32716 to 32714. [2022-01-10 20:06:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32714 states, 32713 states have (on average 1.2448567847644667) internal successors, (40723), 32713 states have internal predecessors, (40723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:14,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32714 states to 32714 states and 40723 transitions. [2022-01-10 20:06:14,770 INFO L78 Accepts]: Start accepts. Automaton has 32714 states and 40723 transitions. Word has length 233 [2022-01-10 20:06:14,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:06:14,770 INFO L470 AbstractCegarLoop]: Abstraction has 32714 states and 40723 transitions. [2022-01-10 20:06:14,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:14,770 INFO L276 IsEmpty]: Start isEmpty. Operand 32714 states and 40723 transitions. [2022-01-10 20:06:14,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-10 20:06:14,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:06:14,781 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:06:14,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-10 20:06:14,782 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:06:14,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:06:14,782 INFO L85 PathProgramCache]: Analyzing trace with hash -574359820, now seen corresponding path program 1 times [2022-01-10 20:06:14,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:06:14,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792949066] [2022-01-10 20:06:14,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:06:14,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:06:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:06:14,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 20:06:14,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:06:14,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792949066] [2022-01-10 20:06:14,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792949066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:06:14,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:06:14,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:06:14,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270170063] [2022-01-10 20:06:14,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:06:14,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:06:14,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:06:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:06:14,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:06:14,822 INFO L87 Difference]: Start difference. First operand 32714 states and 40723 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:17,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:06:17,396 INFO L93 Difference]: Finished difference Result 65160 states and 81132 transitions. [2022-01-10 20:06:17,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:06:17,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 233 [2022-01-10 20:06:17,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:06:17,437 INFO L225 Difference]: With dead ends: 65160 [2022-01-10 20:06:17,438 INFO L226 Difference]: Without dead ends: 32584 [2022-01-10 20:06:17,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:06:17,454 INFO L933 BasicCegarLoop]: 1716 mSDtfsCounter, 1710 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 1717 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 [2022-01-10 20:06:17,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1710 Valid, 1717 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:06:17,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32584 states. [2022-01-10 20:06:20,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32584 to 32584. [2022-01-10 20:06:20,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32584 states, 32583 states have (on average 1.2451278273946536) internal successors, (40570), 32583 states have internal predecessors, (40570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:20,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32584 states to 32584 states and 40570 transitions. [2022-01-10 20:06:20,116 INFO L78 Accepts]: Start accepts. Automaton has 32584 states and 40570 transitions. Word has length 233 [2022-01-10 20:06:20,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:06:20,116 INFO L470 AbstractCegarLoop]: Abstraction has 32584 states and 40570 transitions. [2022-01-10 20:06:20,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:20,117 INFO L276 IsEmpty]: Start isEmpty. Operand 32584 states and 40570 transitions. [2022-01-10 20:06:20,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-10 20:06:20,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:06:20,128 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:06:20,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-10 20:06:20,129 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:06:20,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:06:20,129 INFO L85 PathProgramCache]: Analyzing trace with hash -715309793, now seen corresponding path program 1 times [2022-01-10 20:06:20,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:06:20,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763390639] [2022-01-10 20:06:20,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:06:20,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:06:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:06:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:06:20,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:06:20,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763390639] [2022-01-10 20:06:20,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763390639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:06:20,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:06:20,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:06:20,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239617245] [2022-01-10 20:06:20,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:06:20,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:06:20,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:06:20,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:06:20,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:06:20,207 INFO L87 Difference]: Start difference. First operand 32584 states and 40570 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:06:24,996 INFO L93 Difference]: Finished difference Result 94749 states and 117842 transitions. [2022-01-10 20:06:24,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:06:24,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2022-01-10 20:06:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:06:25,091 INFO L225 Difference]: With dead ends: 94749 [2022-01-10 20:06:25,091 INFO L226 Difference]: Without dead ends: 62303 [2022-01-10 20:06:25,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:06:25,124 INFO L933 BasicCegarLoop]: 2611 mSDtfsCounter, 1353 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 4305 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 [2022-01-10 20:06:25,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1353 Valid, 4305 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:06:25,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62303 states. [2022-01-10 20:06:30,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62303 to 62301. [2022-01-10 20:06:30,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62301 states, 62300 states have (on average 1.2419903691813805) internal successors, (77376), 62300 states have internal predecessors, (77376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:30,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62301 states to 62301 states and 77376 transitions. [2022-01-10 20:06:30,292 INFO L78 Accepts]: Start accepts. Automaton has 62301 states and 77376 transitions. Word has length 234 [2022-01-10 20:06:30,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:06:30,293 INFO L470 AbstractCegarLoop]: Abstraction has 62301 states and 77376 transitions. [2022-01-10 20:06:30,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:30,293 INFO L276 IsEmpty]: Start isEmpty. Operand 62301 states and 77376 transitions. [2022-01-10 20:06:30,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-10 20:06:30,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:06:30,315 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:06:30,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-10 20:06:30,315 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:06:30,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:06:30,316 INFO L85 PathProgramCache]: Analyzing trace with hash -269772482, now seen corresponding path program 1 times [2022-01-10 20:06:30,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:06:30,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47295942] [2022-01-10 20:06:30,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:06:30,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:06:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:06:30,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 20:06:30,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:06:30,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47295942] [2022-01-10 20:06:30,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47295942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:06:30,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:06:30,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:06:30,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832907009] [2022-01-10 20:06:30,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:06:30,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:06:30,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:06:30,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:06:30,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:06:30,356 INFO L87 Difference]: Start difference. First operand 62301 states and 77376 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:35,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:06:35,870 INFO L93 Difference]: Finished difference Result 124335 states and 154441 transitions. [2022-01-10 20:06:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:06:35,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 234 [2022-01-10 20:06:35,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:06:35,962 INFO L225 Difference]: With dead ends: 124335 [2022-01-10 20:06:35,963 INFO L226 Difference]: Without dead ends: 62172 [2022-01-10 20:06:36,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:06:36,133 INFO L933 BasicCegarLoop]: 1715 mSDtfsCounter, 1708 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 1716 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 [2022-01-10 20:06:36,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1708 Valid, 1716 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:06:36,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62172 states. [2022-01-10 20:06:41,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62172 to 62172. [2022-01-10 20:06:41,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62172 states, 62171 states have (on average 1.2421386176834859) internal successors, (77225), 62171 states have internal predecessors, (77225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:41,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62172 states to 62172 states and 77225 transitions. [2022-01-10 20:06:41,396 INFO L78 Accepts]: Start accepts. Automaton has 62172 states and 77225 transitions. Word has length 234 [2022-01-10 20:06:41,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:06:41,396 INFO L470 AbstractCegarLoop]: Abstraction has 62172 states and 77225 transitions. [2022-01-10 20:06:41,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:06:41,396 INFO L276 IsEmpty]: Start isEmpty. Operand 62172 states and 77225 transitions. [2022-01-10 20:06:41,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-01-10 20:06:41,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:06:41,413 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:06:41,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-10 20:06:41,414 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:06:41,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:06:41,414 INFO L85 PathProgramCache]: Analyzing trace with hash -49819516, now seen corresponding path program 1 times [2022-01-10 20:06:41,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:06:41,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403905505] [2022-01-10 20:06:41,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:06:41,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:06:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:06:41,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:06:41,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:06:41,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403905505] [2022-01-10 20:06:41,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403905505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:06:41,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:06:41,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:06:41,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186076597] [2022-01-10 20:06:41,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:06:41,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:06:41,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:06:41,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:06:41,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:06:41,478 INFO L87 Difference]: Start difference. First operand 62172 states and 77225 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)