/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 07:42:11,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 07:42:11,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 07:42:11,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 07:42:11,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 07:42:11,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 07:42:11,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 07:42:11,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 07:42:11,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 07:42:11,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 07:42:11,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 07:42:11,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 07:42:11,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 07:42:11,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 07:42:11,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 07:42:11,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 07:42:11,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 07:42:11,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 07:42:11,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 07:42:11,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 07:42:11,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 07:42:11,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 07:42:11,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 07:42:11,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 07:42:11,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 07:42:11,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 07:42:11,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 07:42:11,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 07:42:11,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 07:42:11,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 07:42:11,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 07:42:11,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 07:42:11,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 07:42:11,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 07:42:11,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 07:42:11,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 07:42:11,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 07:42:11,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 07:42:11,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 07:42:11,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 07:42:11,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 07:42:11,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 07:42:11,286 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 07:42:11,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 07:42:11,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 07:42:11,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 07:42:11,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 07:42:11,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 07:42:11,288 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 07:42:11,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 07:42:11,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 07:42:11,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 07:42:11,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 07:42:11,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 07:42:11,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 07:42:11,289 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 07:42:11,289 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 07:42:11,289 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 07:42:11,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 07:42:11,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 07:42:11,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 07:42:11,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 07:42:11,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 07:42:11,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:42:11,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 07:42:11,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 07:42:11,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 07:42:11,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 07:42:11,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 07:42:11,291 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 07:42:11,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 07:42:11,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 07:42:11,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 07:42:11,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 07:42:11,292 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 07:42:11,292 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 07:42:11,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 07:42:11,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 07:42:11,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 07:42:11,501 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 07:42:11,502 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 07:42:11,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c [2022-01-11 07:42:11,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d89ead84/e9d167bb226248d0ae986fa0386af024/FLAGc335ed170 [2022-01-11 07:42:11,881 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 07:42:11,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c [2022-01-11 07:42:11,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d89ead84/e9d167bb226248d0ae986fa0386af024/FLAGc335ed170 [2022-01-11 07:42:12,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d89ead84/e9d167bb226248d0ae986fa0386af024 [2022-01-11 07:42:12,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 07:42:12,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 07:42:12,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 07:42:12,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 07:42:12,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 07:42:12,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:42:12" (1/1) ... [2022-01-11 07:42:12,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d05406c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:12, skipping insertion in model container [2022-01-11 07:42:12,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:42:12" (1/1) ... [2022-01-11 07:42:12,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 07:42:12,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 07:42:12,509 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.03.cil-2.c[911,924] [2022-01-11 07:42:12,552 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.03.cil-2.c[8416,8429] [2022-01-11 07:42:12,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:42:12,596 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 07:42:12,605 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.03.cil-2.c[911,924] [2022-01-11 07:42:12,624 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.03.cil-2.c[8416,8429] [2022-01-11 07:42:12,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:42:12,675 INFO L208 MainTranslator]: Completed translation [2022-01-11 07:42:12,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:12 WrapperNode [2022-01-11 07:42:12,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 07:42:12,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 07:42:12,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 07:42:12,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 07:42:12,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:12" (1/1) ... [2022-01-11 07:42:12,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:12" (1/1) ... [2022-01-11 07:42:12,767 INFO L137 Inliner]: procedures = 62, calls = 70, calls flagged for inlining = 65, calls inlined = 95, statements flattened = 1217 [2022-01-11 07:42:12,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 07:42:12,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 07:42:12,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 07:42:12,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 07:42:12,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:12" (1/1) ... [2022-01-11 07:42:12,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:12" (1/1) ... [2022-01-11 07:42:12,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:12" (1/1) ... [2022-01-11 07:42:12,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:12" (1/1) ... [2022-01-11 07:42:12,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:12" (1/1) ... [2022-01-11 07:42:12,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:12" (1/1) ... [2022-01-11 07:42:12,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:12" (1/1) ... [2022-01-11 07:42:12,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 07:42:12,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 07:42:12,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 07:42:12,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 07:42:12,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:12" (1/1) ... [2022-01-11 07:42:12,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:42:12,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 07:42:12,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 07:42:12,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 07:42:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 07:42:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 07:42:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 07:42:12,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 07:42:13,027 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 07:42:13,032 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 07:42:13,790 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume !(1bv32 == ~q_free~0); [2022-01-11 07:42:13,791 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##106: assume 1bv32 == ~q_free~0;~c_dr_st~0 := 2bv32;~c_dr_pc~0 := 2bv32;~a_t~0 := do_read_c_~a~0#1; [2022-01-11 07:42:13,791 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 07:42:13,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 07:42:13,809 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-01-11 07:42:13,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:42:13 BoogieIcfgContainer [2022-01-11 07:42:13,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 07:42:13,812 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 07:42:13,812 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 07:42:13,813 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 07:42:13,815 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:42:13" (1/1) ... [2022-01-11 07:42:14,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:42:14 BasicIcfg [2022-01-11 07:42:14,060 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 07:42:14,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 07:42:14,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 07:42:14,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 07:42:14,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 07:42:12" (1/4) ... [2022-01-11 07:42:14,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df5d37e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:42:14, skipping insertion in model container [2022-01-11 07:42:14,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:12" (2/4) ... [2022-01-11 07:42:14,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df5d37e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:42:14, skipping insertion in model container [2022-01-11 07:42:14,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:42:13" (3/4) ... [2022-01-11 07:42:14,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df5d37e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 07:42:14, skipping insertion in model container [2022-01-11 07:42:14,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:42:14" (4/4) ... [2022-01-11 07:42:14,067 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.03.cil-2.cTransformedIcfg [2022-01-11 07:42:14,071 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 07:42:14,071 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-11 07:42:14,114 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 07:42:14,120 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 07:42:14,120 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-11 07:42:14,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 467 states, 463 states have (on average 1.5529157667386608) internal successors, (719), 466 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:14,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 07:42:14,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:14,147 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] [2022-01-11 07:42:14,148 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:14,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:14,152 INFO L85 PathProgramCache]: Analyzing trace with hash -750293995, now seen corresponding path program 1 times [2022-01-11 07:42:14,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:14,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655312580] [2022-01-11 07:42:14,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:14,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:14,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:14,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655312580] [2022-01-11 07:42:14,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655312580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:14,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:14,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:14,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807454504] [2022-01-11 07:42:14,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:14,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:14,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:14,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:14,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:14,504 INFO L87 Difference]: Start difference. First operand has 467 states, 463 states have (on average 1.5529157667386608) internal successors, (719), 466 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:14,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:14,703 INFO L93 Difference]: Finished difference Result 1002 states and 1543 transitions. [2022-01-11 07:42:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:14,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-01-11 07:42:14,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:14,724 INFO L225 Difference]: With dead ends: 1002 [2022-01-11 07:42:14,724 INFO L226 Difference]: Without dead ends: 590 [2022-01-11 07:42:14,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:14,735 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 185 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:14,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 1340 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:42:14,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-01-11 07:42:14,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 586. [2022-01-11 07:42:14,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 583 states have (on average 1.4888507718696398) internal successors, (868), 585 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 868 transitions. [2022-01-11 07:42:14,833 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 868 transitions. Word has length 44 [2022-01-11 07:42:14,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:14,833 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 868 transitions. [2022-01-11 07:42:14,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:14,834 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 868 transitions. [2022-01-11 07:42:14,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 07:42:14,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:14,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:14,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 07:42:14,836 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:14,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:14,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1591854676, now seen corresponding path program 1 times [2022-01-11 07:42:14,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:14,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118605620] [2022-01-11 07:42:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:14,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:14,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:14,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:14,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118605620] [2022-01-11 07:42:14,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118605620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:14,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:14,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:14,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117568883] [2022-01-11 07:42:14,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:14,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:14,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:14,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:14,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:14,951 INFO L87 Difference]: Start difference. First operand 586 states and 868 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:15,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:15,029 INFO L93 Difference]: Finished difference Result 1004 states and 1473 transitions. [2022-01-11 07:42:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:15,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-01-11 07:42:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:15,033 INFO L225 Difference]: With dead ends: 1004 [2022-01-11 07:42:15,033 INFO L226 Difference]: Without dead ends: 764 [2022-01-11 07:42:15,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:15,035 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 646 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:15,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 807 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:42:15,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-01-11 07:42:15,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 756. [2022-01-11 07:42:15,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 753 states have (on average 1.4648074369189907) internal successors, (1103), 755 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1103 transitions. [2022-01-11 07:42:15,071 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1103 transitions. Word has length 44 [2022-01-11 07:42:15,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:15,072 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 1103 transitions. [2022-01-11 07:42:15,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:15,074 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1103 transitions. [2022-01-11 07:42:15,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-11 07:42:15,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:15,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:15,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 07:42:15,085 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:15,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:15,086 INFO L85 PathProgramCache]: Analyzing trace with hash 537158233, now seen corresponding path program 1 times [2022-01-11 07:42:15,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:15,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112146260] [2022-01-11 07:42:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:15,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:15,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:15,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112146260] [2022-01-11 07:42:15,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112146260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:15,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:15,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:15,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461133082] [2022-01-11 07:42:15,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:15,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:15,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:15,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:15,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:15,164 INFO L87 Difference]: Start difference. First operand 756 states and 1103 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:15,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:15,263 INFO L93 Difference]: Finished difference Result 1478 states and 2137 transitions. [2022-01-11 07:42:15,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:15,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-01-11 07:42:15,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:15,270 INFO L225 Difference]: With dead ends: 1478 [2022-01-11 07:42:15,270 INFO L226 Difference]: Without dead ends: 1082 [2022-01-11 07:42:15,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:15,277 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 630 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:15,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 804 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:15,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-01-11 07:42:15,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1074. [2022-01-11 07:42:15,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1071 states have (on average 1.4341736694677871) internal successors, (1536), 1073 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:15,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1536 transitions. [2022-01-11 07:42:15,314 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1536 transitions. Word has length 45 [2022-01-11 07:42:15,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:15,314 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 1536 transitions. [2022-01-11 07:42:15,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:15,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1536 transitions. [2022-01-11 07:42:15,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 07:42:15,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:15,316 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:15,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 07:42:15,317 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:15,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:15,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1762030591, now seen corresponding path program 1 times [2022-01-11 07:42:15,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:15,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145118270] [2022-01-11 07:42:15,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:15,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 07:42:15,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:15,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145118270] [2022-01-11 07:42:15,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145118270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:15,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:15,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:15,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189389155] [2022-01-11 07:42:15,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:15,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:15,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:15,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:15,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:15,396 INFO L87 Difference]: Start difference. First operand 1074 states and 1536 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:15,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:15,475 INFO L93 Difference]: Finished difference Result 2442 states and 3438 transitions. [2022-01-11 07:42:15,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:15,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-11 07:42:15,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:15,482 INFO L225 Difference]: With dead ends: 2442 [2022-01-11 07:42:15,482 INFO L226 Difference]: Without dead ends: 1746 [2022-01-11 07:42:15,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:15,489 INFO L933 BasicCegarLoop]: 669 mSDtfsCounter, 625 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:15,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 834 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:15,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2022-01-11 07:42:15,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1742. [2022-01-11 07:42:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1742 states, 1739 states have (on average 1.3927544565842438) internal successors, (2422), 1741 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2422 transitions. [2022-01-11 07:42:15,565 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2422 transitions. Word has length 59 [2022-01-11 07:42:15,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:15,566 INFO L470 AbstractCegarLoop]: Abstraction has 1742 states and 2422 transitions. [2022-01-11 07:42:15,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:15,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2422 transitions. [2022-01-11 07:42:15,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 07:42:15,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:15,569 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:15,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 07:42:15,569 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:15,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:15,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2076908643, now seen corresponding path program 1 times [2022-01-11 07:42:15,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:15,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178100653] [2022-01-11 07:42:15,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:15,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:15,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:15,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178100653] [2022-01-11 07:42:15,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178100653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:15,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:15,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:15,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002980268] [2022-01-11 07:42:15,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:15,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:15,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:15,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:15,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:15,639 INFO L87 Difference]: Start difference. First operand 1742 states and 2422 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:15,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:15,797 INFO L93 Difference]: Finished difference Result 4366 states and 6004 transitions. [2022-01-11 07:42:15,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:15,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-11 07:42:15,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:15,808 INFO L225 Difference]: With dead ends: 4366 [2022-01-11 07:42:15,808 INFO L226 Difference]: Without dead ends: 3046 [2022-01-11 07:42:15,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:15,811 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 146 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:15,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 1476 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:15,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2022-01-11 07:42:15,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 3046. [2022-01-11 07:42:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 3043 states have (on average 1.3637857377587908) internal successors, (4150), 3045 states have internal predecessors, (4150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:15,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4150 transitions. [2022-01-11 07:42:15,975 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4150 transitions. Word has length 61 [2022-01-11 07:42:15,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:15,975 INFO L470 AbstractCegarLoop]: Abstraction has 3046 states and 4150 transitions. [2022-01-11 07:42:15,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:15,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4150 transitions. [2022-01-11 07:42:15,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:42:15,978 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:15,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:15,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 07:42:15,979 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:15,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:15,979 INFO L85 PathProgramCache]: Analyzing trace with hash -602574848, now seen corresponding path program 1 times [2022-01-11 07:42:15,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:15,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527992934] [2022-01-11 07:42:15,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:15,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:16,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:16,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:16,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527992934] [2022-01-11 07:42:16,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527992934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:16,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:16,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:16,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849751279] [2022-01-11 07:42:16,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:16,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:16,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:16,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:16,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:16,015 INFO L87 Difference]: Start difference. First operand 3046 states and 4150 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:16,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:16,119 INFO L93 Difference]: Finished difference Result 3361 states and 4623 transitions. [2022-01-11 07:42:16,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:16,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:42:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:16,129 INFO L225 Difference]: With dead ends: 3361 [2022-01-11 07:42:16,129 INFO L226 Difference]: Without dead ends: 3046 [2022-01-11 07:42:16,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:16,131 INFO L933 BasicCegarLoop]: 671 mSDtfsCounter, 474 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:16,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 865 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:16,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2022-01-11 07:42:16,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 3046. [2022-01-11 07:42:16,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 3043 states have (on average 1.3634571146894512) internal successors, (4149), 3045 states have internal predecessors, (4149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:16,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4149 transitions. [2022-01-11 07:42:16,255 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4149 transitions. Word has length 66 [2022-01-11 07:42:16,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:16,255 INFO L470 AbstractCegarLoop]: Abstraction has 3046 states and 4149 transitions. [2022-01-11 07:42:16,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:16,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4149 transitions. [2022-01-11 07:42:16,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:42:16,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:16,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:16,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 07:42:16,258 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:16,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:16,259 INFO L85 PathProgramCache]: Analyzing trace with hash 564121471, now seen corresponding path program 1 times [2022-01-11 07:42:16,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:16,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899103434] [2022-01-11 07:42:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:16,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:16,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:16,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899103434] [2022-01-11 07:42:16,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899103434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:16,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:16,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:16,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507963779] [2022-01-11 07:42:16,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:16,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:16,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:16,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:16,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:16,294 INFO L87 Difference]: Start difference. First operand 3046 states and 4149 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:16,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:16,466 INFO L93 Difference]: Finished difference Result 3591 states and 4962 transitions. [2022-01-11 07:42:16,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:16,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:42:16,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:16,479 INFO L225 Difference]: With dead ends: 3591 [2022-01-11 07:42:16,479 INFO L226 Difference]: Without dead ends: 3281 [2022-01-11 07:42:16,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:16,482 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 614 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:16,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 1051 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:16,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-01-11 07:42:16,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3279. [2022-01-11 07:42:16,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3279 states, 3276 states have (on average 1.3714896214896215) internal successors, (4493), 3278 states have internal predecessors, (4493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3279 states to 3279 states and 4493 transitions. [2022-01-11 07:42:16,640 INFO L78 Accepts]: Start accepts. Automaton has 3279 states and 4493 transitions. Word has length 66 [2022-01-11 07:42:16,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:16,640 INFO L470 AbstractCegarLoop]: Abstraction has 3279 states and 4493 transitions. [2022-01-11 07:42:16,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:16,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3279 states and 4493 transitions. [2022-01-11 07:42:16,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:42:16,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:16,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:16,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 07:42:16,643 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:16,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:16,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1829223327, now seen corresponding path program 1 times [2022-01-11 07:42:16,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:16,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851920228] [2022-01-11 07:42:16,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:16,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:16,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:16,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851920228] [2022-01-11 07:42:16,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851920228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:16,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:16,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:16,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089072759] [2022-01-11 07:42:16,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:16,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:16,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:16,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:16,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:16,691 INFO L87 Difference]: Start difference. First operand 3279 states and 4493 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:16,842 INFO L93 Difference]: Finished difference Result 3821 states and 5300 transitions. [2022-01-11 07:42:16,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:16,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:42:16,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:16,853 INFO L225 Difference]: With dead ends: 3821 [2022-01-11 07:42:16,853 INFO L226 Difference]: Without dead ends: 3279 [2022-01-11 07:42:16,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:16,857 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 654 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:16,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 660 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:16,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2022-01-11 07:42:17,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 3279. [2022-01-11 07:42:17,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3279 states, 3276 states have (on average 1.369047619047619) internal successors, (4485), 3278 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:17,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3279 states to 3279 states and 4485 transitions. [2022-01-11 07:42:17,035 INFO L78 Accepts]: Start accepts. Automaton has 3279 states and 4485 transitions. Word has length 66 [2022-01-11 07:42:17,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:17,035 INFO L470 AbstractCegarLoop]: Abstraction has 3279 states and 4485 transitions. [2022-01-11 07:42:17,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:17,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3279 states and 4485 transitions. [2022-01-11 07:42:17,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:42:17,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:17,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:17,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 07:42:17,038 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:17,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:17,039 INFO L85 PathProgramCache]: Analyzing trace with hash 484559743, now seen corresponding path program 1 times [2022-01-11 07:42:17,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:17,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425378989] [2022-01-11 07:42:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:17,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:17,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:17,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:17,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425378989] [2022-01-11 07:42:17,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425378989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:17,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:17,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:17,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905803411] [2022-01-11 07:42:17,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:17,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:17,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:17,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:17,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:17,079 INFO L87 Difference]: Start difference. First operand 3279 states and 4485 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:17,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:17,231 INFO L93 Difference]: Finished difference Result 3820 states and 5283 transitions. [2022-01-11 07:42:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:17,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:42:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:17,243 INFO L225 Difference]: With dead ends: 3820 [2022-01-11 07:42:17,244 INFO L226 Difference]: Without dead ends: 3279 [2022-01-11 07:42:17,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:17,246 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 648 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:17,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 655 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2022-01-11 07:42:17,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 3279. [2022-01-11 07:42:17,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3279 states, 3276 states have (on average 1.3666056166056166) internal successors, (4477), 3278 states have internal predecessors, (4477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3279 states to 3279 states and 4477 transitions. [2022-01-11 07:42:17,442 INFO L78 Accepts]: Start accepts. Automaton has 3279 states and 4477 transitions. Word has length 66 [2022-01-11 07:42:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:17,443 INFO L470 AbstractCegarLoop]: Abstraction has 3279 states and 4477 transitions. [2022-01-11 07:42:17,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3279 states and 4477 transitions. [2022-01-11 07:42:17,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:42:17,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:17,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:17,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 07:42:17,446 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:17,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:17,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1133920159, now seen corresponding path program 1 times [2022-01-11 07:42:17,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:17,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740471938] [2022-01-11 07:42:17,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:17,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:17,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:17,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740471938] [2022-01-11 07:42:17,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740471938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:17,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:17,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:17,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839534137] [2022-01-11 07:42:17,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:17,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:17,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:17,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:17,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:17,474 INFO L87 Difference]: Start difference. First operand 3279 states and 4477 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:17,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:17,618 INFO L93 Difference]: Finished difference Result 3819 states and 5266 transitions. [2022-01-11 07:42:17,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:17,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:42:17,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:17,631 INFO L225 Difference]: With dead ends: 3819 [2022-01-11 07:42:17,631 INFO L226 Difference]: Without dead ends: 3279 [2022-01-11 07:42:17,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:17,633 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 642 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:17,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 650 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:17,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2022-01-11 07:42:17,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 3279. [2022-01-11 07:42:17,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3279 states, 3276 states have (on average 1.3641636141636142) internal successors, (4469), 3278 states have internal predecessors, (4469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3279 states to 3279 states and 4469 transitions. [2022-01-11 07:42:17,789 INFO L78 Accepts]: Start accepts. Automaton has 3279 states and 4469 transitions. Word has length 66 [2022-01-11 07:42:17,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:17,789 INFO L470 AbstractCegarLoop]: Abstraction has 3279 states and 4469 transitions. [2022-01-11 07:42:17,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:17,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3279 states and 4469 transitions. [2022-01-11 07:42:17,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:42:17,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:17,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:17,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 07:42:17,792 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:17,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash -791613152, now seen corresponding path program 1 times [2022-01-11 07:42:17,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:17,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289241120] [2022-01-11 07:42:17,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:17,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:17,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:17,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289241120] [2022-01-11 07:42:17,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289241120] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:17,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:17,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:17,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873151678] [2022-01-11 07:42:17,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:17,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:17,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:17,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:17,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:17,833 INFO L87 Difference]: Start difference. First operand 3279 states and 4469 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:17,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:17,991 INFO L93 Difference]: Finished difference Result 3818 states and 5249 transitions. [2022-01-11 07:42:17,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:17,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:42:17,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:18,019 INFO L225 Difference]: With dead ends: 3818 [2022-01-11 07:42:18,019 INFO L226 Difference]: Without dead ends: 3279 [2022-01-11 07:42:18,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:18,022 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 588 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:18,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 671 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:18,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2022-01-11 07:42:18,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 3279. [2022-01-11 07:42:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3279 states, 3276 states have (on average 1.3586691086691087) internal successors, (4451), 3278 states have internal predecessors, (4451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3279 states to 3279 states and 4451 transitions. [2022-01-11 07:42:18,191 INFO L78 Accepts]: Start accepts. Automaton has 3279 states and 4451 transitions. Word has length 66 [2022-01-11 07:42:18,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:18,191 INFO L470 AbstractCegarLoop]: Abstraction has 3279 states and 4451 transitions. [2022-01-11 07:42:18,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3279 states and 4451 transitions. [2022-01-11 07:42:18,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:42:18,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:18,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:18,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 07:42:18,194 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:18,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:18,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1262670145, now seen corresponding path program 1 times [2022-01-11 07:42:18,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:18,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950154131] [2022-01-11 07:42:18,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:18,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:18,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:18,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950154131] [2022-01-11 07:42:18,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950154131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:18,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:18,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:18,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576325748] [2022-01-11 07:42:18,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:18,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:18,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:18,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:18,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:18,224 INFO L87 Difference]: Start difference. First operand 3279 states and 4451 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:18,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:18,373 INFO L93 Difference]: Finished difference Result 3817 states and 5212 transitions. [2022-01-11 07:42:18,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:18,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:42:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:18,395 INFO L225 Difference]: With dead ends: 3817 [2022-01-11 07:42:18,395 INFO L226 Difference]: Without dead ends: 3279 [2022-01-11 07:42:18,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:18,397 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 577 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:18,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 659 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:18,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2022-01-11 07:42:18,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 3279. [2022-01-11 07:42:18,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3279 states, 3276 states have (on average 1.3531746031746033) internal successors, (4433), 3278 states have internal predecessors, (4433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:18,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3279 states to 3279 states and 4433 transitions. [2022-01-11 07:42:18,546 INFO L78 Accepts]: Start accepts. Automaton has 3279 states and 4433 transitions. Word has length 66 [2022-01-11 07:42:18,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:18,546 INFO L470 AbstractCegarLoop]: Abstraction has 3279 states and 4433 transitions. [2022-01-11 07:42:18,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:18,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3279 states and 4433 transitions. [2022-01-11 07:42:18,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:42:18,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:18,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:18,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 07:42:18,549 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:18,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:18,550 INFO L85 PathProgramCache]: Analyzing trace with hash -139052194, now seen corresponding path program 1 times [2022-01-11 07:42:18,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:18,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014346968] [2022-01-11 07:42:18,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:18,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:18,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:18,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014346968] [2022-01-11 07:42:18,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014346968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:18,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:18,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:18,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753427100] [2022-01-11 07:42:18,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:18,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:18,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:18,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:18,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:18,579 INFO L87 Difference]: Start difference. First operand 3279 states and 4433 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:18,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:18,742 INFO L93 Difference]: Finished difference Result 3815 states and 5173 transitions. [2022-01-11 07:42:18,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:18,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:42:18,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:18,749 INFO L225 Difference]: With dead ends: 3815 [2022-01-11 07:42:18,749 INFO L226 Difference]: Without dead ends: 3279 [2022-01-11 07:42:18,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:18,752 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 565 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:18,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 647 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:18,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2022-01-11 07:42:18,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 3279. [2022-01-11 07:42:18,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3279 states, 3276 states have (on average 1.3476800976800978) internal successors, (4415), 3278 states have internal predecessors, (4415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3279 states to 3279 states and 4415 transitions. [2022-01-11 07:42:18,956 INFO L78 Accepts]: Start accepts. Automaton has 3279 states and 4415 transitions. Word has length 66 [2022-01-11 07:42:18,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:18,956 INFO L470 AbstractCegarLoop]: Abstraction has 3279 states and 4415 transitions. [2022-01-11 07:42:18,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:18,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3279 states and 4415 transitions. [2022-01-11 07:42:18,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:42:18,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:18,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:18,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 07:42:18,960 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:18,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:18,960 INFO L85 PathProgramCache]: Analyzing trace with hash -473717123, now seen corresponding path program 1 times [2022-01-11 07:42:18,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:18,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785729766] [2022-01-11 07:42:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:18,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:19,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:19,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:19,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785729766] [2022-01-11 07:42:19,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785729766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:19,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:19,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:42:19,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653190907] [2022-01-11 07:42:19,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:19,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:42:19,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:19,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:42:19,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:42:19,022 INFO L87 Difference]: Start difference. First operand 3279 states and 4415 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:19,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:19,256 INFO L93 Difference]: Finished difference Result 4114 states and 5557 transitions. [2022-01-11 07:42:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:42:19,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:42:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:19,264 INFO L225 Difference]: With dead ends: 4114 [2022-01-11 07:42:19,264 INFO L226 Difference]: Without dead ends: 3585 [2022-01-11 07:42:19,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:42:19,266 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 1141 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:19,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1141 Valid, 1893 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:42:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2022-01-11 07:42:19,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 3285. [2022-01-11 07:42:19,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3285 states, 3282 states have (on average 1.3439975624619134) internal successors, (4411), 3284 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:19,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3285 states to 3285 states and 4411 transitions. [2022-01-11 07:42:19,448 INFO L78 Accepts]: Start accepts. Automaton has 3285 states and 4411 transitions. Word has length 66 [2022-01-11 07:42:19,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:19,449 INFO L470 AbstractCegarLoop]: Abstraction has 3285 states and 4411 transitions. [2022-01-11 07:42:19,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:19,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3285 states and 4411 transitions. [2022-01-11 07:42:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:42:19,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:19,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:19,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 07:42:19,453 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:19,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:19,455 INFO L85 PathProgramCache]: Analyzing trace with hash -922413762, now seen corresponding path program 1 times [2022-01-11 07:42:19,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:19,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802783643] [2022-01-11 07:42:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:19,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:19,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:19,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802783643] [2022-01-11 07:42:19,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802783643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:19,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:19,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:19,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097056011] [2022-01-11 07:42:19,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:19,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:19,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:19,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:19,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:19,490 INFO L87 Difference]: Start difference. First operand 3285 states and 4411 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:19,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:19,674 INFO L93 Difference]: Finished difference Result 4241 states and 5678 transitions. [2022-01-11 07:42:19,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:19,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:42:19,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:19,682 INFO L225 Difference]: With dead ends: 4241 [2022-01-11 07:42:19,682 INFO L226 Difference]: Without dead ends: 3715 [2022-01-11 07:42:19,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:19,686 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 523 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:19,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 943 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2022-01-11 07:42:19,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3709. [2022-01-11 07:42:19,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 3706 states have (on average 1.3389098758769562) internal successors, (4962), 3708 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:19,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 4962 transitions. [2022-01-11 07:42:19,883 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 4962 transitions. Word has length 66 [2022-01-11 07:42:19,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:19,883 INFO L470 AbstractCegarLoop]: Abstraction has 3709 states and 4962 transitions. [2022-01-11 07:42:19,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:19,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 4962 transitions. [2022-01-11 07:42:19,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:42:19,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:19,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:19,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 07:42:19,886 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:19,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:19,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1440916163, now seen corresponding path program 1 times [2022-01-11 07:42:19,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:19,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132172398] [2022-01-11 07:42:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:19,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:19,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:19,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132172398] [2022-01-11 07:42:19,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132172398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:19,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:19,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:42:19,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156702855] [2022-01-11 07:42:19,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:19,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:42:19,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:19,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:42:19,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:42:19,929 INFO L87 Difference]: Start difference. First operand 3709 states and 4962 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:20,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:20,217 INFO L93 Difference]: Finished difference Result 5404 states and 7199 transitions. [2022-01-11 07:42:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:42:20,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:42:20,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:20,226 INFO L225 Difference]: With dead ends: 5404 [2022-01-11 07:42:20,226 INFO L226 Difference]: Without dead ends: 4458 [2022-01-11 07:42:20,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:42:20,230 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 1055 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:20,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1055 Valid, 2658 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:42:20,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2022-01-11 07:42:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 3742. [2022-01-11 07:42:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3739 states have (on average 1.3332441829366142) internal successors, (4985), 3741 states have internal predecessors, (4985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 4985 transitions. [2022-01-11 07:42:20,455 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 4985 transitions. Word has length 66 [2022-01-11 07:42:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:20,455 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 4985 transitions. [2022-01-11 07:42:20,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 4985 transitions. [2022-01-11 07:42:20,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:42:20,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:20,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:20,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 07:42:20,458 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:20,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:20,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1090116226, now seen corresponding path program 1 times [2022-01-11 07:42:20,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:20,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063040455] [2022-01-11 07:42:20,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:20,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:20,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:20,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063040455] [2022-01-11 07:42:20,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063040455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:20,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:20,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:20,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005118804] [2022-01-11 07:42:20,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:20,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:20,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:20,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:20,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:20,492 INFO L87 Difference]: Start difference. First operand 3742 states and 4985 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:20,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:20,683 INFO L93 Difference]: Finished difference Result 4715 states and 6243 transitions. [2022-01-11 07:42:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:20,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:42:20,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:20,691 INFO L225 Difference]: With dead ends: 4715 [2022-01-11 07:42:20,691 INFO L226 Difference]: Without dead ends: 3715 [2022-01-11 07:42:20,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:20,694 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 510 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:20,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 621 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:20,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2022-01-11 07:42:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3715. [2022-01-11 07:42:20,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3715 states, 3712 states have (on average 1.3270474137931034) internal successors, (4926), 3714 states have internal predecessors, (4926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3715 states to 3715 states and 4926 transitions. [2022-01-11 07:42:20,934 INFO L78 Accepts]: Start accepts. Automaton has 3715 states and 4926 transitions. Word has length 66 [2022-01-11 07:42:20,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:20,934 INFO L470 AbstractCegarLoop]: Abstraction has 3715 states and 4926 transitions. [2022-01-11 07:42:20,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3715 states and 4926 transitions. [2022-01-11 07:42:20,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:42:20,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:20,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:20,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 07:42:20,937 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:20,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:20,938 INFO L85 PathProgramCache]: Analyzing trace with hash 263193471, now seen corresponding path program 1 times [2022-01-11 07:42:20,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:20,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22379724] [2022-01-11 07:42:20,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:20,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:20,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:20,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22379724] [2022-01-11 07:42:20,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22379724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:20,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:20,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:20,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091348041] [2022-01-11 07:42:20,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:20,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:20,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:20,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:20,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:20,973 INFO L87 Difference]: Start difference. First operand 3715 states and 4926 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:21,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:21,220 INFO L93 Difference]: Finished difference Result 5573 states and 7289 transitions. [2022-01-11 07:42:21,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:21,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:42:21,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:21,231 INFO L225 Difference]: With dead ends: 5573 [2022-01-11 07:42:21,231 INFO L226 Difference]: Without dead ends: 4603 [2022-01-11 07:42:21,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:21,234 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 511 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:21,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 911 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:21,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4603 states. [2022-01-11 07:42:21,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4603 to 4497. [2022-01-11 07:42:21,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4497 states, 4494 states have (on average 1.3137516688918558) internal successors, (5904), 4496 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:21,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 5904 transitions. [2022-01-11 07:42:21,490 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 5904 transitions. Word has length 66 [2022-01-11 07:42:21,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:21,490 INFO L470 AbstractCegarLoop]: Abstraction has 4497 states and 5904 transitions. [2022-01-11 07:42:21,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:21,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 5904 transitions. [2022-01-11 07:42:21,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-11 07:42:21,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:21,497 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:21,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 07:42:21,497 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:21,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:21,498 INFO L85 PathProgramCache]: Analyzing trace with hash 40253627, now seen corresponding path program 1 times [2022-01-11 07:42:21,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:21,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691221129] [2022-01-11 07:42:21,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:21,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 07:42:21,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:21,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691221129] [2022-01-11 07:42:21,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691221129] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:21,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:21,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:21,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387019193] [2022-01-11 07:42:21,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:21,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:21,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:21,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:21,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:21,544 INFO L87 Difference]: Start difference. First operand 4497 states and 5904 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:21,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:21,899 INFO L93 Difference]: Finished difference Result 9577 states and 12788 transitions. [2022-01-11 07:42:21,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:21,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-01-11 07:42:21,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:21,913 INFO L225 Difference]: With dead ends: 9577 [2022-01-11 07:42:21,913 INFO L226 Difference]: Without dead ends: 7037 [2022-01-11 07:42:21,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:21,916 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 131 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:21,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 1137 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:21,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7037 states. [2022-01-11 07:42:22,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7037 to 7033. [2022-01-11 07:42:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7033 states, 7030 states have (on average 1.3200568990042674) internal successors, (9280), 7032 states have internal predecessors, (9280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:22,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7033 states to 7033 states and 9280 transitions. [2022-01-11 07:42:22,194 INFO L78 Accepts]: Start accepts. Automaton has 7033 states and 9280 transitions. Word has length 103 [2022-01-11 07:42:22,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:22,194 INFO L470 AbstractCegarLoop]: Abstraction has 7033 states and 9280 transitions. [2022-01-11 07:42:22,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand 7033 states and 9280 transitions. [2022-01-11 07:42:22,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-11 07:42:22,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:22,202 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:22,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 07:42:22,202 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:22,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:22,202 INFO L85 PathProgramCache]: Analyzing trace with hash 229973990, now seen corresponding path program 1 times [2022-01-11 07:42:22,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:22,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112352482] [2022-01-11 07:42:22,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:22,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:22,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:22,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112352482] [2022-01-11 07:42:22,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112352482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:22,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:22,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:22,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762564160] [2022-01-11 07:42:22,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:22,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:22,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:22,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:22,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:22,245 INFO L87 Difference]: Start difference. First operand 7033 states and 9280 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:22,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:22,568 INFO L93 Difference]: Finished difference Result 9601 states and 12784 transitions. [2022-01-11 07:42:22,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:22,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-01-11 07:42:22,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:22,572 INFO L225 Difference]: With dead ends: 9601 [2022-01-11 07:42:22,572 INFO L226 Difference]: Without dead ends: 1772 [2022-01-11 07:42:22,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:22,582 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 112 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:22,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1259 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:22,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2022-01-11 07:42:22,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1772. [2022-01-11 07:42:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1771 states have (on average 1.261434217955957) internal successors, (2234), 1771 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:22,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2234 transitions. [2022-01-11 07:42:22,681 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2234 transitions. Word has length 104 [2022-01-11 07:42:22,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:22,681 INFO L470 AbstractCegarLoop]: Abstraction has 1772 states and 2234 transitions. [2022-01-11 07:42:22,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:22,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2234 transitions. [2022-01-11 07:42:22,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 07:42:22,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:22,683 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] [2022-01-11 07:42:22,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 07:42:22,683 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:22,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:22,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2060026617, now seen corresponding path program 1 times [2022-01-11 07:42:22,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:22,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382921073] [2022-01-11 07:42:22,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:22,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:22,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:22,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382921073] [2022-01-11 07:42:22,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382921073] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:22,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:22,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:22,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906954637] [2022-01-11 07:42:22,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:22,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:22,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:22,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:22,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:22,763 INFO L87 Difference]: Start difference. First operand 1772 states and 2234 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:23,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:23,053 INFO L93 Difference]: Finished difference Result 5123 states and 6482 transitions. [2022-01-11 07:42:23,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:23,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-11 07:42:23,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:23,061 INFO L225 Difference]: With dead ends: 5123 [2022-01-11 07:42:23,061 INFO L226 Difference]: Without dead ends: 3377 [2022-01-11 07:42:23,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:23,067 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 327 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:23,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 715 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2022-01-11 07:42:23,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3191. [2022-01-11 07:42:23,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3191 states, 3190 states have (on average 1.2601880877742946) internal successors, (4020), 3190 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3191 states to 3191 states and 4020 transitions. [2022-01-11 07:42:23,315 INFO L78 Accepts]: Start accepts. Automaton has 3191 states and 4020 transitions. Word has length 106 [2022-01-11 07:42:23,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:23,316 INFO L470 AbstractCegarLoop]: Abstraction has 3191 states and 4020 transitions. [2022-01-11 07:42:23,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:23,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3191 states and 4020 transitions. [2022-01-11 07:42:23,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 07:42:23,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:23,318 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] [2022-01-11 07:42:23,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 07:42:23,318 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:23,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:23,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1541524216, now seen corresponding path program 1 times [2022-01-11 07:42:23,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:23,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030318004] [2022-01-11 07:42:23,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:23,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:23,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:23,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030318004] [2022-01-11 07:42:23,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030318004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:23,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:23,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:23,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819256012] [2022-01-11 07:42:23,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:23,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:23,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:23,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:23,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:23,365 INFO L87 Difference]: Start difference. First operand 3191 states and 4020 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:23,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:23,781 INFO L93 Difference]: Finished difference Result 9253 states and 11577 transitions. [2022-01-11 07:42:23,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:23,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-11 07:42:23,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:23,792 INFO L225 Difference]: With dead ends: 9253 [2022-01-11 07:42:23,792 INFO L226 Difference]: Without dead ends: 6115 [2022-01-11 07:42:23,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:23,798 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 336 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:23,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 845 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:23,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6115 states. [2022-01-11 07:42:24,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6115 to 5961. [2022-01-11 07:42:24,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5961 states, 5960 states have (on average 1.236744966442953) internal successors, (7371), 5960 states have internal predecessors, (7371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:24,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 7371 transitions. [2022-01-11 07:42:24,135 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 7371 transitions. Word has length 106 [2022-01-11 07:42:24,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:24,135 INFO L470 AbstractCegarLoop]: Abstraction has 5961 states and 7371 transitions. [2022-01-11 07:42:24,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:24,135 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 7371 transitions. [2022-01-11 07:42:24,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 07:42:24,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:24,138 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] [2022-01-11 07:42:24,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 07:42:24,139 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:24,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:24,139 INFO L85 PathProgramCache]: Analyzing trace with hash 707121689, now seen corresponding path program 1 times [2022-01-11 07:42:24,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:24,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943722857] [2022-01-11 07:42:24,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:24,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:42:24,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:24,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943722857] [2022-01-11 07:42:24,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943722857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:24,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:24,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:24,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292200604] [2022-01-11 07:42:24,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:24,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:24,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:24,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:24,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:24,171 INFO L87 Difference]: Start difference. First operand 5961 states and 7371 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:24,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:24,553 INFO L93 Difference]: Finished difference Result 11846 states and 14657 transitions. [2022-01-11 07:42:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:24,554 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 106 [2022-01-11 07:42:24,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:24,565 INFO L225 Difference]: With dead ends: 11846 [2022-01-11 07:42:24,565 INFO L226 Difference]: Without dead ends: 5915 [2022-01-11 07:42:24,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:24,571 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 393 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:24,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 399 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:24,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5915 states. [2022-01-11 07:42:24,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5915 to 5915. [2022-01-11 07:42:24,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5915 states, 5914 states have (on average 1.2375718633750423) internal successors, (7319), 5914 states have internal predecessors, (7319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:24,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5915 states to 5915 states and 7319 transitions. [2022-01-11 07:42:24,856 INFO L78 Accepts]: Start accepts. Automaton has 5915 states and 7319 transitions. Word has length 106 [2022-01-11 07:42:24,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:24,856 INFO L470 AbstractCegarLoop]: Abstraction has 5915 states and 7319 transitions. [2022-01-11 07:42:24,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:24,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5915 states and 7319 transitions. [2022-01-11 07:42:24,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 07:42:24,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:24,862 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:24,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 07:42:24,862 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:24,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:24,862 INFO L85 PathProgramCache]: Analyzing trace with hash -143007274, now seen corresponding path program 1 times [2022-01-11 07:42:24,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:24,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93670460] [2022-01-11 07:42:24,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:24,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:24,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:24,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93670460] [2022-01-11 07:42:24,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93670460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:24,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:24,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:24,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941819255] [2022-01-11 07:42:24,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:24,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:24,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:24,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:24,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:24,905 INFO L87 Difference]: Start difference. First operand 5915 states and 7319 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:25,570 INFO L93 Difference]: Finished difference Result 17044 states and 21042 transitions. [2022-01-11 07:42:25,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:25,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-11 07:42:25,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:25,594 INFO L225 Difference]: With dead ends: 17044 [2022-01-11 07:42:25,594 INFO L226 Difference]: Without dead ends: 11182 [2022-01-11 07:42:25,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:25,606 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 252 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:25,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 893 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11182 states. [2022-01-11 07:42:26,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11182 to 11180. [2022-01-11 07:42:26,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11180 states, 11179 states have (on average 1.2255121209410502) internal successors, (13700), 11179 states have internal predecessors, (13700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:26,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11180 states to 11180 states and 13700 transitions. [2022-01-11 07:42:26,304 INFO L78 Accepts]: Start accepts. Automaton has 11180 states and 13700 transitions. Word has length 107 [2022-01-11 07:42:26,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:26,304 INFO L470 AbstractCegarLoop]: Abstraction has 11180 states and 13700 transitions. [2022-01-11 07:42:26,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 11180 states and 13700 transitions. [2022-01-11 07:42:26,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 07:42:26,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:26,311 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] [2022-01-11 07:42:26,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 07:42:26,312 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:26,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:26,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1341742539, now seen corresponding path program 1 times [2022-01-11 07:42:26,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:26,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320720621] [2022-01-11 07:42:26,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:26,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:26,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:42:26,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:26,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320720621] [2022-01-11 07:42:26,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320720621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:26,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:26,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:26,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797985756] [2022-01-11 07:42:26,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:26,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:26,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:26,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:26,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:26,342 INFO L87 Difference]: Start difference. First operand 11180 states and 13700 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:26,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:26,806 INFO L93 Difference]: Finished difference Result 19660 states and 24101 transitions. [2022-01-11 07:42:26,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:26,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 107 [2022-01-11 07:42:26,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:26,819 INFO L225 Difference]: With dead ends: 19660 [2022-01-11 07:42:26,819 INFO L226 Difference]: Without dead ends: 8533 [2022-01-11 07:42:26,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:26,835 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 391 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:26,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 398 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:26,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8533 states. [2022-01-11 07:42:27,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8533 to 8533. [2022-01-11 07:42:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8533 states, 8532 states have (on average 1.2257383966244726) internal successors, (10458), 8532 states have internal predecessors, (10458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:27,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8533 states to 8533 states and 10458 transitions. [2022-01-11 07:42:27,386 INFO L78 Accepts]: Start accepts. Automaton has 8533 states and 10458 transitions. Word has length 107 [2022-01-11 07:42:27,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:27,386 INFO L470 AbstractCegarLoop]: Abstraction has 8533 states and 10458 transitions. [2022-01-11 07:42:27,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:27,387 INFO L276 IsEmpty]: Start isEmpty. Operand 8533 states and 10458 transitions. [2022-01-11 07:42:27,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 07:42:27,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:27,390 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] [2022-01-11 07:42:27,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 07:42:27,390 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:27,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:27,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2104153109, now seen corresponding path program 1 times [2022-01-11 07:42:27,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:27,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722848501] [2022-01-11 07:42:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:27,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:27,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:27,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:27,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722848501] [2022-01-11 07:42:27,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722848501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:27,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:27,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:27,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009422293] [2022-01-11 07:42:27,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:27,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:27,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:27,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:27,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:27,442 INFO L87 Difference]: Start difference. First operand 8533 states and 10458 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:28,228 INFO L93 Difference]: Finished difference Result 23993 states and 29347 transitions. [2022-01-11 07:42:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:28,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-11 07:42:28,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:28,251 INFO L225 Difference]: With dead ends: 23993 [2022-01-11 07:42:28,252 INFO L226 Difference]: Without dead ends: 15513 [2022-01-11 07:42:28,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:28,266 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 255 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:28,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 866 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:28,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15513 states. [2022-01-11 07:42:29,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15513 to 15319. [2022-01-11 07:42:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15319 states, 15318 states have (on average 1.2195456325891108) internal successors, (18681), 15318 states have internal predecessors, (18681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15319 states to 15319 states and 18681 transitions. [2022-01-11 07:42:29,111 INFO L78 Accepts]: Start accepts. Automaton has 15319 states and 18681 transitions. Word has length 108 [2022-01-11 07:42:29,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:29,112 INFO L470 AbstractCegarLoop]: Abstraction has 15319 states and 18681 transitions. [2022-01-11 07:42:29,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,112 INFO L276 IsEmpty]: Start isEmpty. Operand 15319 states and 18681 transitions. [2022-01-11 07:42:29,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 07:42:29,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:29,117 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] [2022-01-11 07:42:29,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 07:42:29,117 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:29,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:29,118 INFO L85 PathProgramCache]: Analyzing trace with hash 992078922, now seen corresponding path program 1 times [2022-01-11 07:42:29,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:29,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166796551] [2022-01-11 07:42:29,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:29,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:29,143 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:42:29,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:29,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166796551] [2022-01-11 07:42:29,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166796551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:29,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:29,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:29,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409286649] [2022-01-11 07:42:29,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:29,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:29,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:29,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:29,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:29,145 INFO L87 Difference]: Start difference. First operand 15319 states and 18681 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:29,952 INFO L93 Difference]: Finished difference Result 30551 states and 37268 transitions. [2022-01-11 07:42:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:29,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 108 [2022-01-11 07:42:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:29,971 INFO L225 Difference]: With dead ends: 30551 [2022-01-11 07:42:29,972 INFO L226 Difference]: Without dead ends: 15275 [2022-01-11 07:42:29,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:29,988 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 389 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:29,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 397 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:29,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15275 states. [2022-01-11 07:42:30,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15275 to 15275. [2022-01-11 07:42:30,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15275 states, 15274 states have (on average 1.2199161974597355) internal successors, (18633), 15274 states have internal predecessors, (18633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15275 states to 15275 states and 18633 transitions. [2022-01-11 07:42:30,902 INFO L78 Accepts]: Start accepts. Automaton has 15275 states and 18633 transitions. Word has length 108 [2022-01-11 07:42:30,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:30,902 INFO L470 AbstractCegarLoop]: Abstraction has 15275 states and 18633 transitions. [2022-01-11 07:42:30,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,902 INFO L276 IsEmpty]: Start isEmpty. Operand 15275 states and 18633 transitions. [2022-01-11 07:42:30,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-11 07:42:30,907 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:30,907 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] [2022-01-11 07:42:30,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 07:42:30,907 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:30,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:30,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1247138793, now seen corresponding path program 1 times [2022-01-11 07:42:30,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:30,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053760881] [2022-01-11 07:42:30,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:30,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:30,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:30,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053760881] [2022-01-11 07:42:30,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053760881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:30,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:30,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:30,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450224294] [2022-01-11 07:42:30,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:30,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:30,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:30,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:30,945 INFO L87 Difference]: Start difference. First operand 15275 states and 18633 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:31,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:31,967 INFO L93 Difference]: Finished difference Result 30597 states and 37434 transitions. [2022-01-11 07:42:31,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:31,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-01-11 07:42:31,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:31,993 INFO L225 Difference]: With dead ends: 30597 [2022-01-11 07:42:31,993 INFO L226 Difference]: Without dead ends: 22019 [2022-01-11 07:42:32,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:32,004 INFO L933 BasicCegarLoop]: 670 mSDtfsCounter, 280 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:32,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 1053 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:32,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22019 states. [2022-01-11 07:42:33,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22019 to 22019. [2022-01-11 07:42:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22019 states, 22018 states have (on average 1.2123262784994095) internal successors, (26693), 22018 states have internal predecessors, (26693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:33,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22019 states to 22019 states and 26693 transitions. [2022-01-11 07:42:33,115 INFO L78 Accepts]: Start accepts. Automaton has 22019 states and 26693 transitions. Word has length 109 [2022-01-11 07:42:33,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:33,116 INFO L470 AbstractCegarLoop]: Abstraction has 22019 states and 26693 transitions. [2022-01-11 07:42:33,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:33,116 INFO L276 IsEmpty]: Start isEmpty. Operand 22019 states and 26693 transitions. [2022-01-11 07:42:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-11 07:42:33,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:33,128 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] [2022-01-11 07:42:33,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 07:42:33,128 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:33,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:33,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1219241560, now seen corresponding path program 1 times [2022-01-11 07:42:33,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:33,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177478642] [2022-01-11 07:42:33,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:33,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:33,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:33,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177478642] [2022-01-11 07:42:33,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177478642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:33,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:33,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:33,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360015328] [2022-01-11 07:42:33,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:33,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:33,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:33,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:33,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:33,192 INFO L87 Difference]: Start difference. First operand 22019 states and 26693 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:34,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:34,567 INFO L93 Difference]: Finished difference Result 50665 states and 61309 transitions. [2022-01-11 07:42:34,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:34,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-01-11 07:42:34,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:34,602 INFO L225 Difference]: With dead ends: 50665 [2022-01-11 07:42:34,602 INFO L226 Difference]: Without dead ends: 28684 [2022-01-11 07:42:34,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:34,624 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 232 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:34,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 712 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:34,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28684 states. [2022-01-11 07:42:36,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28684 to 28540. [2022-01-11 07:42:36,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28540 states, 28539 states have (on average 1.2032306668068258) internal successors, (34339), 28539 states have internal predecessors, (34339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28540 states to 28540 states and 34339 transitions. [2022-01-11 07:42:36,239 INFO L78 Accepts]: Start accepts. Automaton has 28540 states and 34339 transitions. Word has length 140 [2022-01-11 07:42:36,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:36,241 INFO L470 AbstractCegarLoop]: Abstraction has 28540 states and 34339 transitions. [2022-01-11 07:42:36,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:36,241 INFO L276 IsEmpty]: Start isEmpty. Operand 28540 states and 34339 transitions. [2022-01-11 07:42:36,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-11 07:42:36,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:36,255 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:36,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 07:42:36,256 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:36,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:36,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1287570392, now seen corresponding path program 1 times [2022-01-11 07:42:36,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:36,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708204547] [2022-01-11 07:42:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:36,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-11 07:42:36,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:36,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708204547] [2022-01-11 07:42:36,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708204547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:36,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:36,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:36,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332542145] [2022-01-11 07:42:36,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:36,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:36,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:36,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:36,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:36,294 INFO L87 Difference]: Start difference. First operand 28540 states and 34339 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:37,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:37,759 INFO L93 Difference]: Finished difference Result 56428 states and 67760 transitions. [2022-01-11 07:42:37,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:37,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 157 [2022-01-11 07:42:37,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:37,797 INFO L225 Difference]: With dead ends: 56428 [2022-01-11 07:42:37,797 INFO L226 Difference]: Without dead ends: 27940 [2022-01-11 07:42:37,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:37,828 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 269 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:37,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 732 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:37,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27940 states. [2022-01-11 07:42:39,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27940 to 27940. [2022-01-11 07:42:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27940 states, 27939 states have (on average 1.1809656752210171) internal successors, (32995), 27939 states have internal predecessors, (32995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27940 states to 27940 states and 32995 transitions. [2022-01-11 07:42:39,674 INFO L78 Accepts]: Start accepts. Automaton has 27940 states and 32995 transitions. Word has length 157 [2022-01-11 07:42:39,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:39,674 INFO L470 AbstractCegarLoop]: Abstraction has 27940 states and 32995 transitions. [2022-01-11 07:42:39,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:39,675 INFO L276 IsEmpty]: Start isEmpty. Operand 27940 states and 32995 transitions. [2022-01-11 07:42:39,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 07:42:39,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:39,688 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:39,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 07:42:39,689 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:39,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:39,689 INFO L85 PathProgramCache]: Analyzing trace with hash 777697533, now seen corresponding path program 1 times [2022-01-11 07:42:39,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:39,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967199088] [2022-01-11 07:42:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:39,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:39,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:39,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967199088] [2022-01-11 07:42:39,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967199088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:39,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:39,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:39,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671607039] [2022-01-11 07:42:39,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:39,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:39,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:39,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:39,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:39,778 INFO L87 Difference]: Start difference. First operand 27940 states and 32995 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:41,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:41,455 INFO L93 Difference]: Finished difference Result 49428 states and 58553 transitions. [2022-01-11 07:42:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:41,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-01-11 07:42:41,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:41,496 INFO L225 Difference]: With dead ends: 49428 [2022-01-11 07:42:41,496 INFO L226 Difference]: Without dead ends: 27942 [2022-01-11 07:42:41,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:41,519 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 273 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:41,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 1035 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:41,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27942 states. [2022-01-11 07:42:43,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27942 to 27940. [2022-01-11 07:42:43,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27940 states, 27939 states have (on average 1.1779591252371238) internal successors, (32911), 27939 states have internal predecessors, (32911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:43,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27940 states to 27940 states and 32911 transitions. [2022-01-11 07:42:43,086 INFO L78 Accepts]: Start accepts. Automaton has 27940 states and 32911 transitions. Word has length 158 [2022-01-11 07:42:43,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:43,087 INFO L470 AbstractCegarLoop]: Abstraction has 27940 states and 32911 transitions. [2022-01-11 07:42:43,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:43,087 INFO L276 IsEmpty]: Start isEmpty. Operand 27940 states and 32911 transitions. [2022-01-11 07:42:43,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 07:42:43,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:43,099 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:43,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 07:42:43,099 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:43,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:43,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1842433166, now seen corresponding path program 1 times [2022-01-11 07:42:43,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:43,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959887886] [2022-01-11 07:42:43,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:43,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:43,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:43,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959887886] [2022-01-11 07:42:43,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959887886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:43,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:43,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:43,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55065249] [2022-01-11 07:42:43,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:43,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:43,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:43,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:43,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:43,148 INFO L87 Difference]: Start difference. First operand 27940 states and 32911 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:44,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:44,599 INFO L93 Difference]: Finished difference Result 49522 states and 58480 transitions. [2022-01-11 07:42:44,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:44,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-01-11 07:42:44,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:44,633 INFO L225 Difference]: With dead ends: 49522 [2022-01-11 07:42:44,634 INFO L226 Difference]: Without dead ends: 28036 [2022-01-11 07:42:44,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:44,653 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 302 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:44,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 976 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:44,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28036 states. [2022-01-11 07:42:46,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28036 to 27940. [2022-01-11 07:42:46,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27940 states, 27939 states have (on average 1.1577722896309819) internal successors, (32347), 27939 states have internal predecessors, (32347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:46,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27940 states to 27940 states and 32347 transitions. [2022-01-11 07:42:46,310 INFO L78 Accepts]: Start accepts. Automaton has 27940 states and 32347 transitions. Word has length 158 [2022-01-11 07:42:46,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:46,311 INFO L470 AbstractCegarLoop]: Abstraction has 27940 states and 32347 transitions. [2022-01-11 07:42:46,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:46,311 INFO L276 IsEmpty]: Start isEmpty. Operand 27940 states and 32347 transitions. [2022-01-11 07:42:46,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 07:42:46,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:46,322 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:46,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 07:42:46,322 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:46,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:46,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1499693135, now seen corresponding path program 1 times [2022-01-11 07:42:46,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:46,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200631522] [2022-01-11 07:42:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:46,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-11 07:42:46,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:46,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200631522] [2022-01-11 07:42:46,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200631522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:46,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:46,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:42:46,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076805344] [2022-01-11 07:42:46,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:46,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:42:46,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:46,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:42:46,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:42:46,386 INFO L87 Difference]: Start difference. First operand 27940 states and 32347 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:48,599 INFO L93 Difference]: Finished difference Result 61632 states and 71880 transitions. [2022-01-11 07:42:48,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:42:48,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-11 07:42:48,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:48,644 INFO L225 Difference]: With dead ends: 61632 [2022-01-11 07:42:48,644 INFO L226 Difference]: Without dead ends: 33734 [2022-01-11 07:42:48,660 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 [2022-01-11 07:42:48,661 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 839 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:48,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 1247 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:42:48,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33734 states. [2022-01-11 07:42:50,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33734 to 23526. [2022-01-11 07:42:50,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23526 states, 23525 states have (on average 1.1413390010626994) internal successors, (26850), 23525 states have internal predecessors, (26850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:50,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23526 states to 23526 states and 26850 transitions. [2022-01-11 07:42:50,381 INFO L78 Accepts]: Start accepts. Automaton has 23526 states and 26850 transitions. Word has length 160 [2022-01-11 07:42:50,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:50,381 INFO L470 AbstractCegarLoop]: Abstraction has 23526 states and 26850 transitions. [2022-01-11 07:42:50,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:50,382 INFO L276 IsEmpty]: Start isEmpty. Operand 23526 states and 26850 transitions. [2022-01-11 07:42:50,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-01-11 07:42:50,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:50,393 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:50,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-11 07:42:50,394 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:50,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:50,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1146587284, now seen corresponding path program 1 times [2022-01-11 07:42:50,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:50,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343850521] [2022-01-11 07:42:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:50,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:50,441 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:50,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:50,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343850521] [2022-01-11 07:42:50,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343850521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:50,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:50,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:50,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824607709] [2022-01-11 07:42:50,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:50,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:50,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:50,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:50,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:50,443 INFO L87 Difference]: Start difference. First operand 23526 states and 26850 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:51,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:51,921 INFO L93 Difference]: Finished difference Result 43074 states and 49284 transitions. [2022-01-11 07:42:51,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:51,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 194 [2022-01-11 07:42:51,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:51,948 INFO L225 Difference]: With dead ends: 43074 [2022-01-11 07:42:51,948 INFO L226 Difference]: Without dead ends: 23528 [2022-01-11 07:42:51,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:51,964 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 267 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:51,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 968 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:51,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23528 states. [2022-01-11 07:42:53,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23528 to 23526. [2022-01-11 07:42:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23526 states, 23525 states have (on average 1.1370882040382573) internal successors, (26750), 23525 states have internal predecessors, (26750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:53,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23526 states to 23526 states and 26750 transitions. [2022-01-11 07:42:53,565 INFO L78 Accepts]: Start accepts. Automaton has 23526 states and 26750 transitions. Word has length 194 [2022-01-11 07:42:53,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:53,565 INFO L470 AbstractCegarLoop]: Abstraction has 23526 states and 26750 transitions. [2022-01-11 07:42:53,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:53,565 INFO L276 IsEmpty]: Start isEmpty. Operand 23526 states and 26750 transitions. [2022-01-11 07:42:53,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-01-11 07:42:53,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:53,581 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:53,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-11 07:42:53,582 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:53,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:53,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1030930227, now seen corresponding path program 1 times [2022-01-11 07:42:53,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:53,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494258594] [2022-01-11 07:42:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:53,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:53,644 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 07:42:53,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:53,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494258594] [2022-01-11 07:42:53,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494258594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:53,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:53,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:53,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742758269] [2022-01-11 07:42:53,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:53,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:53,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:53,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:53,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:53,647 INFO L87 Difference]: Start difference. First operand 23526 states and 26750 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:55,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:55,259 INFO L93 Difference]: Finished difference Result 47002 states and 53448 transitions. [2022-01-11 07:42:55,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:55,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 230 [2022-01-11 07:42:55,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:55,286 INFO L225 Difference]: With dead ends: 47002 [2022-01-11 07:42:55,286 INFO L226 Difference]: Without dead ends: 23528 [2022-01-11 07:42:55,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:55,302 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 264 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:55,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 981 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:55,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23528 states. [2022-01-11 07:42:56,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23528 to 23526. [2022-01-11 07:42:56,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23526 states, 23525 states have (on average 1.1296068012752392) internal successors, (26574), 23525 states have internal predecessors, (26574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23526 states to 23526 states and 26574 transitions. [2022-01-11 07:42:56,716 INFO L78 Accepts]: Start accepts. Automaton has 23526 states and 26574 transitions. Word has length 230 [2022-01-11 07:42:56,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:56,717 INFO L470 AbstractCegarLoop]: Abstraction has 23526 states and 26574 transitions. [2022-01-11 07:42:56,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:56,717 INFO L276 IsEmpty]: Start isEmpty. Operand 23526 states and 26574 transitions. [2022-01-11 07:42:56,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-01-11 07:42:56,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:56,732 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:56,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-11 07:42:56,732 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:56,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:56,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2086615424, now seen corresponding path program 1 times [2022-01-11 07:42:56,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:56,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386046765] [2022-01-11 07:42:56,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:56,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:56,786 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:56,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:56,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386046765] [2022-01-11 07:42:56,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386046765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:56,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:56,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:56,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80613670] [2022-01-11 07:42:56,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:56,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:56,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:56,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:56,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:56,788 INFO L87 Difference]: Start difference. First operand 23526 states and 26574 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:58,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:58,479 INFO L93 Difference]: Finished difference Result 43136 states and 48835 transitions. [2022-01-11 07:42:58,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:58,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 231 [2022-01-11 07:42:58,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:58,506 INFO L225 Difference]: With dead ends: 43136 [2022-01-11 07:42:58,506 INFO L226 Difference]: Without dead ends: 23590 [2022-01-11 07:42:58,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:58,524 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 295 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:58,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 870 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23590 states. [2022-01-11 07:43:00,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23590 to 23526. [2022-01-11 07:43:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23526 states, 23525 states have (on average 1.1078427205100956) internal successors, (26062), 23525 states have internal predecessors, (26062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:00,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23526 states to 23526 states and 26062 transitions. [2022-01-11 07:43:00,266 INFO L78 Accepts]: Start accepts. Automaton has 23526 states and 26062 transitions. Word has length 231 [2022-01-11 07:43:00,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:43:00,267 INFO L470 AbstractCegarLoop]: Abstraction has 23526 states and 26062 transitions. [2022-01-11 07:43:00,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:00,267 INFO L276 IsEmpty]: Start isEmpty. Operand 23526 states and 26062 transitions. [2022-01-11 07:43:00,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-11 07:43:00,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:43:00,277 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:43:00,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-11 07:43:00,277 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:43:00,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:43:00,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1864852364, now seen corresponding path program 1 times [2022-01-11 07:43:00,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:43:00,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127548802] [2022-01-11 07:43:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:43:00,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:43:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:43:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 07:43:00,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:43:00,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127548802] [2022-01-11 07:43:00,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127548802] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:43:00,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:43:00,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:43:00,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887033337] [2022-01-11 07:43:00,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:43:00,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:43:00,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:43:00,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:43:00,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:43:00,325 INFO L87 Difference]: Start difference. First operand 23526 states and 26062 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:43:01,913 INFO L93 Difference]: Finished difference Result 38750 states and 43017 transitions. [2022-01-11 07:43:01,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:43:01,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 [2022-01-11 07:43:01,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:43:01,939 INFO L225 Difference]: With dead ends: 38750 [2022-01-11 07:43:01,939 INFO L226 Difference]: Without dead ends: 24374 [2022-01-11 07:43:01,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:43:01,954 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 314 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:43:01,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 883 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:43:01,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24374 states. [2022-01-11 07:43:03,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24374 to 23526. [2022-01-11 07:43:03,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23526 states, 23525 states have (on average 1.0935600425079703) internal successors, (25726), 23525 states have internal predecessors, (25726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23526 states to 23526 states and 25726 transitions. [2022-01-11 07:43:03,522 INFO L78 Accepts]: Start accepts. Automaton has 23526 states and 25726 transitions. Word has length 234 [2022-01-11 07:43:03,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:43:03,522 INFO L470 AbstractCegarLoop]: Abstraction has 23526 states and 25726 transitions. [2022-01-11 07:43:03,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:03,522 INFO L276 IsEmpty]: Start isEmpty. Operand 23526 states and 25726 transitions. [2022-01-11 07:43:03,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-11 07:43:03,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:43:03,533 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:43:03,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-11 07:43:03,533 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:43:03,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:43:03,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1135725642, now seen corresponding path program 1 times [2022-01-11 07:43:03,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:43:03,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747544604] [2022-01-11 07:43:03,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:43:03,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:43:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:43:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:43:03,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:43:03,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747544604] [2022-01-11 07:43:03,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747544604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:43:03,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:43:03,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:43:03,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414127962] [2022-01-11 07:43:03,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:43:03,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:43:03,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:43:03,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:43:03,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:43:03,612 INFO L87 Difference]: Start difference. First operand 23526 states and 25726 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:04,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:43:04,674 INFO L93 Difference]: Finished difference Result 37950 states and 41621 transitions. [2022-01-11 07:43:04,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:43:04,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2022-01-11 07:43:04,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:43:04,692 INFO L225 Difference]: With dead ends: 37950 [2022-01-11 07:43:04,692 INFO L226 Difference]: Without dead ends: 14476 [2022-01-11 07:43:04,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:43:04,711 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 257 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:43:04,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 783 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:43:04,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14476 states. [2022-01-11 07:43:05,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14476 to 14444. [2022-01-11 07:43:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14444 states, 14443 states have (on average 1.0792771584850793) internal successors, (15588), 14443 states have internal predecessors, (15588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14444 states to 14444 states and 15588 transitions. [2022-01-11 07:43:05,717 INFO L78 Accepts]: Start accepts. Automaton has 14444 states and 15588 transitions. Word has length 236 [2022-01-11 07:43:05,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:43:05,717 INFO L470 AbstractCegarLoop]: Abstraction has 14444 states and 15588 transitions. [2022-01-11 07:43:05,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:05,718 INFO L276 IsEmpty]: Start isEmpty. Operand 14444 states and 15588 transitions. [2022-01-11 07:43:05,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-01-11 07:43:05,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:43:05,726 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:43:05,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-11 07:43:05,727 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:43:05,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:43:05,727 INFO L85 PathProgramCache]: Analyzing trace with hash -327822334, now seen corresponding path program 1 times [2022-01-11 07:43:05,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:43:05,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998992344] [2022-01-11 07:43:05,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:43:05,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:43:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:43:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-11 07:43:05,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:43:05,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998992344] [2022-01-11 07:43:05,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998992344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:43:05,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:43:05,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:43:05,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326868312] [2022-01-11 07:43:05,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:43:05,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:43:05,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:43:05,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:43:05,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:43:05,814 INFO L87 Difference]: Start difference. First operand 14444 states and 15588 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:43:06,444 INFO L93 Difference]: Finished difference Result 21401 states and 23052 transitions. [2022-01-11 07:43:06,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:43:06,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 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 239 [2022-01-11 07:43:06,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:43:06,450 INFO L225 Difference]: With dead ends: 21401 [2022-01-11 07:43:06,450 INFO L226 Difference]: Without dead ends: 4139 [2022-01-11 07:43:06,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:43:06,460 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 937 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:43:06,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 846 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:43:06,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2022-01-11 07:43:06,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 3819. [2022-01-11 07:43:06,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3819 states, 3818 states have (on average 1.0539549502357255) internal successors, (4024), 3818 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:06,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3819 states to 3819 states and 4024 transitions. [2022-01-11 07:43:06,704 INFO L78 Accepts]: Start accepts. Automaton has 3819 states and 4024 transitions. Word has length 239 [2022-01-11 07:43:06,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:43:06,704 INFO L470 AbstractCegarLoop]: Abstraction has 3819 states and 4024 transitions. [2022-01-11 07:43:06,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:06,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3819 states and 4024 transitions. [2022-01-11 07:43:06,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-01-11 07:43:06,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:43:06,707 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:43:06,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-11 07:43:06,707 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:43:06,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:43:06,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1442740482, now seen corresponding path program 1 times [2022-01-11 07:43:06,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:43:06,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093148406] [2022-01-11 07:43:06,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:43:06,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:43:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:43:07,008 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 07:43:07,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:43:07,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093148406] [2022-01-11 07:43:07,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093148406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:43:07,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:43:07,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 07:43:07,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480927606] [2022-01-11 07:43:07,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:43:07,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 07:43:07,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:43:07,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 07:43:07,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 07:43:07,011 INFO L87 Difference]: Start difference. First operand 3819 states and 4024 transitions. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 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) [2022-01-11 07:43:07,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:43:07,805 INFO L93 Difference]: Finished difference Result 3819 states and 4024 transitions. [2022-01-11 07:43:07,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:43:07,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 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 239 [2022-01-11 07:43:07,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:43:07,806 INFO L225 Difference]: With dead ends: 3819 [2022-01-11 07:43:07,806 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 07:43:07,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 07:43:07,810 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 579 mSDsluCounter, 2163 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 2887 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:43:07,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 2887 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:43:07,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 07:43:07,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 07:43:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:07,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 07:43:07,812 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 239 [2022-01-11 07:43:07,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:43:07,812 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 07:43:07,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 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) [2022-01-11 07:43:07,812 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 07:43:07,812 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 07:43:07,815 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-11 07:43:07,815 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-11 07:43:07,815 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-11 07:43:07,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-11 07:43:07,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.