/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/systemc/token_ring.05.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:05:11,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:05:11,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:05:11,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:05:11,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:05:11,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:05:11,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:05:11,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:05:11,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:05:11,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:05:11,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:05:11,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:05:11,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:05:11,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:05:11,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:05:11,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:05:11,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:05:11,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:05:11,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:05:11,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:05:11,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:05:11,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:05:11,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:05:11,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:05:11,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:05:11,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:05:11,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:05:11,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:05:11,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:05:11,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:05:11,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:05:11,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:05:11,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:05:11,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:05:11,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:05:11,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:05:11,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:05:11,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:05:11,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:05:11,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:05:11,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:05:11,238 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 06:05:11,262 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:05:11,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:05:11,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:05:11,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:05:11,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:05:11,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:05:11,264 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:05:11,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:05:11,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:05:11,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:05:11,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:05:11,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:05:11,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:05:11,265 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:05:11,265 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:05:11,266 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:05:11,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:05:11,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:05:11,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:05:11,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:05:11,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:05:11,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:05:11,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:05:11,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:05:11,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:05:11,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:05:11,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:05:11,267 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:05:11,267 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:05:11,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:05:11,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:05:11,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:05:11,268 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:05:11,268 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:05:11,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:05:11,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:05:11,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:05:11,480 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:05:11,480 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:05:11,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.05.cil-1.c [2022-01-11 06:05:11,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0f496281/b5c8ebe896634c44b2b291cac36df316/FLAG9a5a7e506 [2022-01-11 06:05:11,927 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:05:11,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.05.cil-1.c [2022-01-11 06:05:11,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0f496281/b5c8ebe896634c44b2b291cac36df316/FLAG9a5a7e506 [2022-01-11 06:05:11,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0f496281/b5c8ebe896634c44b2b291cac36df316 [2022-01-11 06:05:11,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:05:11,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:05:11,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:05:11,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:05:11,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:05:11,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:05:11" (1/1) ... [2022-01-11 06:05:11,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@173c246d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:11, skipping insertion in model container [2022-01-11 06:05:11,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:05:11" (1/1) ... [2022-01-11 06:05:11,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:05:12,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:05:12,151 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.05.cil-1.c[671,684] [2022-01-11 06:05:12,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:05:12,237 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:05:12,243 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.05.cil-1.c[671,684] [2022-01-11 06:05:12,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:05:12,312 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:05:12,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:12 WrapperNode [2022-01-11 06:05:12,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:05:12,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:05:12,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:05:12,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:05:12,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:12" (1/1) ... [2022-01-11 06:05:12,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:12" (1/1) ... [2022-01-11 06:05:12,382 INFO L137 Inliner]: procedures = 38, calls = 46, calls flagged for inlining = 41, calls inlined = 94, statements flattened = 1341 [2022-01-11 06:05:12,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:05:12,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:05:12,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:05:12,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:05:12,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:12" (1/1) ... [2022-01-11 06:05:12,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:12" (1/1) ... [2022-01-11 06:05:12,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:12" (1/1) ... [2022-01-11 06:05:12,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:12" (1/1) ... [2022-01-11 06:05:12,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:12" (1/1) ... [2022-01-11 06:05:12,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:12" (1/1) ... [2022-01-11 06:05:12,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:12" (1/1) ... [2022-01-11 06:05:12,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:05:12,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:05:12,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:05:12,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:05:12,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:12" (1/1) ... [2022-01-11 06:05:12,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:05:12,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:05:12,512 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 06:05:12,570 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 06:05:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:05:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:05:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:05:12,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:05:12,654 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:05:12,655 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:05:13,358 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:05:13,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:05:13,374 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-11 06:05:13,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:05:13 BoogieIcfgContainer [2022-01-11 06:05:13,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:05:13,378 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:05:13,378 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:05:13,379 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:05:13,381 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:05:13" (1/1) ... [2022-01-11 06:05:13,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:05:13 BasicIcfg [2022-01-11 06:05:13,585 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:05:13,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:05:13,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:05:13,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:05:13,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:05:11" (1/4) ... [2022-01-11 06:05:13,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd4b8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:05:13, skipping insertion in model container [2022-01-11 06:05:13,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:12" (2/4) ... [2022-01-11 06:05:13,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd4b8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:05:13, skipping insertion in model container [2022-01-11 06:05:13,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:05:13" (3/4) ... [2022-01-11 06:05:13,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd4b8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:05:13, skipping insertion in model container [2022-01-11 06:05:13,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:05:13" (4/4) ... [2022-01-11 06:05:13,592 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.05.cil-1.cTransformedIcfg [2022-01-11 06:05:13,595 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:05:13,596 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:05:13,641 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:05:13,646 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 06:05:13,646 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:05:13,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 553 states, 551 states have (on average 1.52994555353902) internal successors, (843), 552 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:13,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:05:13,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:13,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:13,682 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:13,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:13,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1280388863, now seen corresponding path program 1 times [2022-01-11 06:05:13,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:13,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197338434] [2022-01-11 06:05:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:13,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:13,996 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 06:05:13,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:13,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197338434] [2022-01-11 06:05:13,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197338434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:13,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:13,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:14,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833222251] [2022-01-11 06:05:14,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:14,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:14,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:14,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:14,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:14,053 INFO L87 Difference]: Start difference. First operand has 553 states, 551 states have (on average 1.52994555353902) internal successors, (843), 552 states have internal predecessors, (843), 0 states have call successors, (0), 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 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:14,176 INFO L93 Difference]: Finished difference Result 1522 states and 2318 transitions. [2022-01-11 06:05:14,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:14,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-11 06:05:14,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:14,193 INFO L225 Difference]: With dead ends: 1522 [2022-01-11 06:05:14,194 INFO L226 Difference]: Without dead ends: 973 [2022-01-11 06:05:14,199 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 06:05:14,201 INFO L933 BasicCegarLoop]: 819 mSDtfsCounter, 746 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1510 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 06:05:14,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 1510 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:14,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-01-11 06:05:14,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 971. [2022-01-11 06:05:14,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.4917525773195877) internal successors, (1447), 970 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1447 transitions. [2022-01-11 06:05:14,318 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1447 transitions. Word has length 87 [2022-01-11 06:05:14,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:14,319 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1447 transitions. [2022-01-11 06:05:14,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1447 transitions. [2022-01-11 06:05:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:05:14,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:14,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:14,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:05:14,322 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:14,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:14,323 INFO L85 PathProgramCache]: Analyzing trace with hash -944149217, now seen corresponding path program 1 times [2022-01-11 06:05:14,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:14,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639942850] [2022-01-11 06:05:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:14,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:14,394 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 06:05:14,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:14,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639942850] [2022-01-11 06:05:14,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639942850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:14,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:14,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:14,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955421402] [2022-01-11 06:05:14,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:14,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:14,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:14,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:14,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:14,396 INFO L87 Difference]: Start difference. First operand 971 states and 1447 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:14,429 INFO L93 Difference]: Finished difference Result 1929 states and 2874 transitions. [2022-01-11 06:05:14,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:14,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-11 06:05:14,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:14,433 INFO L225 Difference]: With dead ends: 1929 [2022-01-11 06:05:14,433 INFO L226 Difference]: Without dead ends: 971 [2022-01-11 06:05:14,438 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 06:05:14,440 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 802 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 809 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 06:05:14,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 809 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:14,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-01-11 06:05:14,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2022-01-11 06:05:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.4835051546391753) internal successors, (1439), 970 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1439 transitions. [2022-01-11 06:05:14,466 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1439 transitions. Word has length 87 [2022-01-11 06:05:14,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:14,467 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1439 transitions. [2022-01-11 06:05:14,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,467 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1439 transitions. [2022-01-11 06:05:14,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:05:14,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:14,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:14,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:05:14,475 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:14,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:14,480 INFO L85 PathProgramCache]: Analyzing trace with hash -46077185, now seen corresponding path program 1 times [2022-01-11 06:05:14,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:14,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584061524] [2022-01-11 06:05:14,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:14,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:14,547 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 06:05:14,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:14,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584061524] [2022-01-11 06:05:14,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584061524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:14,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:14,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:14,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399315794] [2022-01-11 06:05:14,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:14,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:14,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:14,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:14,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:14,549 INFO L87 Difference]: Start difference. First operand 971 states and 1439 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:14,582 INFO L93 Difference]: Finished difference Result 1928 states and 2857 transitions. [2022-01-11 06:05:14,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:14,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-11 06:05:14,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:14,584 INFO L225 Difference]: With dead ends: 1928 [2022-01-11 06:05:14,585 INFO L226 Difference]: Without dead ends: 971 [2022-01-11 06:05:14,587 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 06:05:14,590 INFO L933 BasicCegarLoop]: 804 mSDtfsCounter, 796 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 804 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 06:05:14,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 804 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:14,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-01-11 06:05:14,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2022-01-11 06:05:14,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.475257731958763) internal successors, (1431), 970 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1431 transitions. [2022-01-11 06:05:14,613 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1431 transitions. Word has length 87 [2022-01-11 06:05:14,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:14,615 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1431 transitions. [2022-01-11 06:05:14,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,615 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1431 transitions. [2022-01-11 06:05:14,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:05:14,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:14,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:14,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:05:14,617 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:14,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:14,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1679675105, now seen corresponding path program 1 times [2022-01-11 06:05:14,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:14,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102188102] [2022-01-11 06:05:14,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:14,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:14,670 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 06:05:14,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:14,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102188102] [2022-01-11 06:05:14,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102188102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:14,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:14,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:14,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498274418] [2022-01-11 06:05:14,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:14,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:14,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:14,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:14,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:14,672 INFO L87 Difference]: Start difference. First operand 971 states and 1431 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:14,710 INFO L93 Difference]: Finished difference Result 1927 states and 2840 transitions. [2022-01-11 06:05:14,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:14,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-11 06:05:14,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:14,713 INFO L225 Difference]: With dead ends: 1927 [2022-01-11 06:05:14,713 INFO L226 Difference]: Without dead ends: 971 [2022-01-11 06:05:14,714 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 06:05:14,718 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 790 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 799 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 06:05:14,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 799 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:14,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-01-11 06:05:14,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2022-01-11 06:05:14,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.4670103092783504) internal successors, (1423), 970 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1423 transitions. [2022-01-11 06:05:14,740 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1423 transitions. Word has length 87 [2022-01-11 06:05:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:14,740 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1423 transitions. [2022-01-11 06:05:14,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1423 transitions. [2022-01-11 06:05:14,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:05:14,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:14,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:05:14,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:05:14,743 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:14,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:14,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1592764159, now seen corresponding path program 1 times [2022-01-11 06:05:14,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:14,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913126581] [2022-01-11 06:05:14,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:14,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:14,807 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 06:05:14,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:14,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913126581] [2022-01-11 06:05:14,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913126581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:14,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:14,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:14,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82470578] [2022-01-11 06:05:14,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:14,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:14,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:14,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:14,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:14,808 INFO L87 Difference]: Start difference. First operand 971 states and 1423 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:14,891 INFO L93 Difference]: Finished difference Result 1926 states and 2823 transitions. [2022-01-11 06:05:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:14,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-11 06:05:14,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:14,895 INFO L225 Difference]: With dead ends: 1926 [2022-01-11 06:05:14,895 INFO L226 Difference]: Without dead ends: 971 [2022-01-11 06:05:14,897 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 06:05:14,897 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 784 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 794 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 06:05:14,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [784 Valid, 794 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:14,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-01-11 06:05:14,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2022-01-11 06:05:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.458762886597938) internal successors, (1415), 970 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1415 transitions. [2022-01-11 06:05:14,924 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1415 transitions. Word has length 87 [2022-01-11 06:05:14,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:14,925 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1415 transitions. [2022-01-11 06:05:14,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,928 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1415 transitions. [2022-01-11 06:05:14,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:05:14,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:14,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:14,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:05:14,929 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:14,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:14,930 INFO L85 PathProgramCache]: Analyzing trace with hash 728495391, now seen corresponding path program 1 times [2022-01-11 06:05:14,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:14,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845367573] [2022-01-11 06:05:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:14,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:14,965 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 06:05:14,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:14,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845367573] [2022-01-11 06:05:14,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845367573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:14,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:14,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:14,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711536452] [2022-01-11 06:05:14,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:14,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:14,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:14,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:14,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:14,967 INFO L87 Difference]: Start difference. First operand 971 states and 1415 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:15,029 INFO L93 Difference]: Finished difference Result 1925 states and 2806 transitions. [2022-01-11 06:05:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:15,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-11 06:05:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:15,033 INFO L225 Difference]: With dead ends: 1925 [2022-01-11 06:05:15,033 INFO L226 Difference]: Without dead ends: 971 [2022-01-11 06:05:15,037 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 06:05:15,038 INFO L933 BasicCegarLoop]: 789 mSDtfsCounter, 778 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 789 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 06:05:15,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 789 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:15,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-01-11 06:05:15,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2022-01-11 06:05:15,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.4505154639175257) internal successors, (1407), 970 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1407 transitions. [2022-01-11 06:05:15,076 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1407 transitions. Word has length 87 [2022-01-11 06:05:15,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:15,076 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1407 transitions. [2022-01-11 06:05:15,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,076 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1407 transitions. [2022-01-11 06:05:15,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:05:15,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:15,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:15,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:05:15,077 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:15,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:15,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1793236225, now seen corresponding path program 1 times [2022-01-11 06:05:15,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:15,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556145116] [2022-01-11 06:05:15,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:15,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:15,126 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 06:05:15,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:15,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556145116] [2022-01-11 06:05:15,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556145116] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:15,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:15,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:15,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759326730] [2022-01-11 06:05:15,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:15,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:15,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:15,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:15,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:15,128 INFO L87 Difference]: Start difference. First operand 971 states and 1407 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:15,231 INFO L93 Difference]: Finished difference Result 1924 states and 2789 transitions. [2022-01-11 06:05:15,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:15,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-11 06:05:15,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:15,236 INFO L225 Difference]: With dead ends: 1924 [2022-01-11 06:05:15,236 INFO L226 Difference]: Without dead ends: 971 [2022-01-11 06:05:15,238 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 06:05:15,239 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 702 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:15,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 826 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:05:15,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-01-11 06:05:15,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2022-01-11 06:05:15,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.4278350515463918) internal successors, (1385), 970 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1385 transitions. [2022-01-11 06:05:15,273 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1385 transitions. Word has length 87 [2022-01-11 06:05:15,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:15,275 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1385 transitions. [2022-01-11 06:05:15,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,276 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1385 transitions. [2022-01-11 06:05:15,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:05:15,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:15,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:15,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:05:15,277 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:15,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:15,277 INFO L85 PathProgramCache]: Analyzing trace with hash -157082466, now seen corresponding path program 1 times [2022-01-11 06:05:15,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:15,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263566762] [2022-01-11 06:05:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:15,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:15,311 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 06:05:15,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:15,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263566762] [2022-01-11 06:05:15,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263566762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:15,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:15,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:15,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819534242] [2022-01-11 06:05:15,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:15,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:15,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:15,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:15,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:15,314 INFO L87 Difference]: Start difference. First operand 971 states and 1385 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:15,385 INFO L93 Difference]: Finished difference Result 1922 states and 2742 transitions. [2022-01-11 06:05:15,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:15,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-11 06:05:15,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:15,390 INFO L225 Difference]: With dead ends: 1922 [2022-01-11 06:05:15,390 INFO L226 Difference]: Without dead ends: 971 [2022-01-11 06:05:15,391 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 06:05:15,392 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 688 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:15,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 812 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:15,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-01-11 06:05:15,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2022-01-11 06:05:15,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.4051546391752576) internal successors, (1363), 970 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1363 transitions. [2022-01-11 06:05:15,431 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1363 transitions. Word has length 87 [2022-01-11 06:05:15,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:15,431 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1363 transitions. [2022-01-11 06:05:15,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,432 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1363 transitions. [2022-01-11 06:05:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:05:15,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:15,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:15,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:05:15,433 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:15,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:15,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2019957571, now seen corresponding path program 1 times [2022-01-11 06:05:15,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:15,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496326611] [2022-01-11 06:05:15,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:15,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:15,471 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 06:05:15,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:15,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496326611] [2022-01-11 06:05:15,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496326611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:15,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:15,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:15,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105359874] [2022-01-11 06:05:15,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:15,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:15,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:15,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:15,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:15,474 INFO L87 Difference]: Start difference. First operand 971 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:15,538 INFO L93 Difference]: Finished difference Result 1921 states and 2697 transitions. [2022-01-11 06:05:15,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:15,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-11 06:05:15,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:15,542 INFO L225 Difference]: With dead ends: 1921 [2022-01-11 06:05:15,542 INFO L226 Difference]: Without dead ends: 971 [2022-01-11 06:05:15,543 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 06:05:15,544 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 675 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:15,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 798 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-01-11 06:05:15,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2022-01-11 06:05:15,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.3824742268041237) internal successors, (1341), 970 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1341 transitions. [2022-01-11 06:05:15,578 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1341 transitions. Word has length 87 [2022-01-11 06:05:15,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:15,578 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1341 transitions. [2022-01-11 06:05:15,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1341 transitions. [2022-01-11 06:05:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:05:15,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:15,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:15,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:05:15,579 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:15,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:15,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1214699484, now seen corresponding path program 1 times [2022-01-11 06:05:15,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:15,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871972411] [2022-01-11 06:05:15,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:15,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:15,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:15,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871972411] [2022-01-11 06:05:15,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871972411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:15,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:15,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:15,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042219577] [2022-01-11 06:05:15,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:15,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:15,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:15,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:15,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:15,619 INFO L87 Difference]: Start difference. First operand 971 states and 1341 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:15,689 INFO L93 Difference]: Finished difference Result 1920 states and 2652 transitions. [2022-01-11 06:05:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:15,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-11 06:05:15,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:15,693 INFO L225 Difference]: With dead ends: 1920 [2022-01-11 06:05:15,693 INFO L226 Difference]: Without dead ends: 971 [2022-01-11 06:05:15,694 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 06:05:15,694 INFO L933 BasicCegarLoop]: 729 mSDtfsCounter, 662 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:15,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [662 Valid, 784 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:15,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-01-11 06:05:15,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2022-01-11 06:05:15,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.3597938144329897) internal successors, (1319), 970 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1319 transitions. [2022-01-11 06:05:15,734 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1319 transitions. Word has length 87 [2022-01-11 06:05:15,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:15,734 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1319 transitions. [2022-01-11 06:05:15,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,735 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1319 transitions. [2022-01-11 06:05:15,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:05:15,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:15,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:15,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:05:15,736 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:15,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:15,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1897501061, now seen corresponding path program 1 times [2022-01-11 06:05:15,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:15,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213997044] [2022-01-11 06:05:15,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:15,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:15,774 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 06:05:15,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:15,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213997044] [2022-01-11 06:05:15,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213997044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:15,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:15,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:15,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862688358] [2022-01-11 06:05:15,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:15,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:15,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:15,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:15,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:15,776 INFO L87 Difference]: Start difference. First operand 971 states and 1319 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:15,841 INFO L93 Difference]: Finished difference Result 1919 states and 2607 transitions. [2022-01-11 06:05:15,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:15,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-11 06:05:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:15,845 INFO L225 Difference]: With dead ends: 1919 [2022-01-11 06:05:15,845 INFO L226 Difference]: Without dead ends: 971 [2022-01-11 06:05:15,846 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 06:05:15,847 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 649 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:15,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 770 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:15,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-01-11 06:05:15,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2022-01-11 06:05:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.3371134020618556) internal successors, (1297), 970 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1297 transitions. [2022-01-11 06:05:15,891 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1297 transitions. Word has length 87 [2022-01-11 06:05:15,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:15,892 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1297 transitions. [2022-01-11 06:05:15,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1297 transitions. [2022-01-11 06:05:15,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:05:15,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:15,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:15,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:05:15,893 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:15,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:15,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1282408474, now seen corresponding path program 1 times [2022-01-11 06:05:15,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:15,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335457336] [2022-01-11 06:05:15,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:15,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:15,923 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 06:05:15,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:15,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335457336] [2022-01-11 06:05:15,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335457336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:15,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:15,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:15,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146270180] [2022-01-11 06:05:15,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:15,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:15,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:15,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:15,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:15,925 INFO L87 Difference]: Start difference. First operand 971 states and 1297 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:16,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:16,023 INFO L93 Difference]: Finished difference Result 2696 states and 3599 transitions. [2022-01-11 06:05:16,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:16,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-11 06:05:16,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:16,029 INFO L225 Difference]: With dead ends: 2696 [2022-01-11 06:05:16,030 INFO L226 Difference]: Without dead ends: 1757 [2022-01-11 06:05:16,031 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 06:05:16,032 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 612 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:16,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 1325 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:16,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2022-01-11 06:05:16,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1751. [2022-01-11 06:05:16,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1750 states have (on average 1.3274285714285714) internal successors, (2323), 1750 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:16,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2323 transitions. [2022-01-11 06:05:16,105 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2323 transitions. Word has length 87 [2022-01-11 06:05:16,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:16,105 INFO L470 AbstractCegarLoop]: Abstraction has 1751 states and 2323 transitions. [2022-01-11 06:05:16,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2323 transitions. [2022-01-11 06:05:16,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:05:16,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:16,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:16,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:05:16,106 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:16,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:16,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1953541849, now seen corresponding path program 1 times [2022-01-11 06:05:16,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:16,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035505839] [2022-01-11 06:05:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:16,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:16,155 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 06:05:16,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:16,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035505839] [2022-01-11 06:05:16,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035505839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:16,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:16,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:05:16,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78387586] [2022-01-11 06:05:16,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:16,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:05:16,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:16,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:05:16,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:05:16,157 INFO L87 Difference]: Start difference. First operand 1751 states and 2323 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:16,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:16,403 INFO L93 Difference]: Finished difference Result 5010 states and 6647 transitions. [2022-01-11 06:05:16,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:05:16,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-11 06:05:16,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:16,414 INFO L225 Difference]: With dead ends: 5010 [2022-01-11 06:05:16,414 INFO L226 Difference]: Without dead ends: 3295 [2022-01-11 06:05:16,417 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 06:05:16,418 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 2217 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:16,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2217 Valid, 3479 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:05:16,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2022-01-11 06:05:16,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 1796. [2022-01-11 06:05:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1795 states have (on average 1.3114206128133705) internal successors, (2354), 1795 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2354 transitions. [2022-01-11 06:05:16,508 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2354 transitions. Word has length 87 [2022-01-11 06:05:16,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:16,508 INFO L470 AbstractCegarLoop]: Abstraction has 1796 states and 2354 transitions. [2022-01-11 06:05:16,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:16,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2354 transitions. [2022-01-11 06:05:16,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:05:16,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:16,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:16,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:05:16,509 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:16,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:16,510 INFO L85 PathProgramCache]: Analyzing trace with hash 28008538, now seen corresponding path program 1 times [2022-01-11 06:05:16,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:16,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938332170] [2022-01-11 06:05:16,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:16,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:16,540 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 06:05:16,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:16,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938332170] [2022-01-11 06:05:16,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938332170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:16,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:16,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:16,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467809582] [2022-01-11 06:05:16,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:16,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:16,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:16,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:16,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:16,541 INFO L87 Difference]: Start difference. First operand 1796 states and 2354 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:16,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:16,667 INFO L93 Difference]: Finished difference Result 3534 states and 4630 transitions. [2022-01-11 06:05:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:16,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-11 06:05:16,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:16,672 INFO L225 Difference]: With dead ends: 3534 [2022-01-11 06:05:16,672 INFO L226 Difference]: Without dead ends: 1757 [2022-01-11 06:05:16,673 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 06:05:16,674 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 582 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:16,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 747 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:16,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2022-01-11 06:05:16,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1757. [2022-01-11 06:05:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1756 states have (on average 1.2955580865603644) internal successors, (2275), 1756 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2275 transitions. [2022-01-11 06:05:16,761 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2275 transitions. Word has length 87 [2022-01-11 06:05:16,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:16,761 INFO L470 AbstractCegarLoop]: Abstraction has 1757 states and 2275 transitions. [2022-01-11 06:05:16,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:16,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2275 transitions. [2022-01-11 06:05:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:05:16,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:16,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:16,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:05:16,762 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:16,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:16,763 INFO L85 PathProgramCache]: Analyzing trace with hash -380815687, now seen corresponding path program 1 times [2022-01-11 06:05:16,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:16,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087894868] [2022-01-11 06:05:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:16,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:16,799 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 06:05:16,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:16,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087894868] [2022-01-11 06:05:16,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087894868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:16,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:16,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:16,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835831046] [2022-01-11 06:05:16,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:16,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:16,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:16,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:16,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:16,801 INFO L87 Difference]: Start difference. First operand 1757 states and 2275 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:17,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:17,007 INFO L93 Difference]: Finished difference Result 5125 states and 6645 transitions. [2022-01-11 06:05:17,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:17,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-11 06:05:17,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:17,016 INFO L225 Difference]: With dead ends: 5125 [2022-01-11 06:05:17,016 INFO L226 Difference]: Without dead ends: 3393 [2022-01-11 06:05:17,019 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 06:05:17,020 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 596 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:17,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 1285 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:17,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2022-01-11 06:05:17,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 3225. [2022-01-11 06:05:17,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3225 states, 3224 states have (on average 1.2900124069478909) internal successors, (4159), 3224 states have internal predecessors, (4159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:17,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 4159 transitions. [2022-01-11 06:05:17,166 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 4159 transitions. Word has length 87 [2022-01-11 06:05:17,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:17,166 INFO L470 AbstractCegarLoop]: Abstraction has 3225 states and 4159 transitions. [2022-01-11 06:05:17,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:17,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 4159 transitions. [2022-01-11 06:05:17,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-11 06:05:17,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:17,168 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:17,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:05:17,169 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:17,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:17,169 INFO L85 PathProgramCache]: Analyzing trace with hash -331801529, now seen corresponding path program 1 times [2022-01-11 06:05:17,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:17,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914772544] [2022-01-11 06:05:17,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:17,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:17,219 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 06:05:17,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:17,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914772544] [2022-01-11 06:05:17,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914772544] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:17,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:17,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:17,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133749708] [2022-01-11 06:05:17,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:17,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:17,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:17,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:17,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:17,222 INFO L87 Difference]: Start difference. First operand 3225 states and 4159 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:17,487 INFO L93 Difference]: Finished difference Result 9290 states and 11917 transitions. [2022-01-11 06:05:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:17,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2022-01-11 06:05:17,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:17,512 INFO L225 Difference]: With dead ends: 9290 [2022-01-11 06:05:17,512 INFO L226 Difference]: Without dead ends: 6142 [2022-01-11 06:05:17,517 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 06:05:17,519 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 490 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1672 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 06:05:17,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 1672 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6142 states. [2022-01-11 06:05:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6142 to 6140. [2022-01-11 06:05:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6140 states, 6139 states have (on average 1.2733344192865288) internal successors, (7817), 6139 states have internal predecessors, (7817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6140 states to 6140 states and 7817 transitions. [2022-01-11 06:05:17,869 INFO L78 Accepts]: Start accepts. Automaton has 6140 states and 7817 transitions. Word has length 141 [2022-01-11 06:05:17,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:17,869 INFO L470 AbstractCegarLoop]: Abstraction has 6140 states and 7817 transitions. [2022-01-11 06:05:17,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:17,870 INFO L276 IsEmpty]: Start isEmpty. Operand 6140 states and 7817 transitions. [2022-01-11 06:05:17,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-11 06:05:17,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:17,873 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:17,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:05:17,873 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:17,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:17,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2024626470, now seen corresponding path program 1 times [2022-01-11 06:05:17,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:17,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151694391] [2022-01-11 06:05:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:17,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:17,901 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 06:05:17,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:17,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151694391] [2022-01-11 06:05:17,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151694391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:17,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:17,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:17,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492885072] [2022-01-11 06:05:17,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:17,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:17,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:17,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:17,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:17,902 INFO L87 Difference]: Start difference. First operand 6140 states and 7817 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:18,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:18,121 INFO L93 Difference]: Finished difference Result 10677 states and 13588 transitions. [2022-01-11 06:05:18,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:18,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 141 [2022-01-11 06:05:18,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:18,135 INFO L225 Difference]: With dead ends: 10677 [2022-01-11 06:05:18,135 INFO L226 Difference]: Without dead ends: 4614 [2022-01-11 06:05:18,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:18,144 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 698 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 702 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 06:05:18,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 702 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:18,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4614 states. [2022-01-11 06:05:18,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4614 to 4614. [2022-01-11 06:05:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4614 states, 4613 states have (on average 1.2707565575547366) internal successors, (5862), 4613 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4614 states to 4614 states and 5862 transitions. [2022-01-11 06:05:18,438 INFO L78 Accepts]: Start accepts. Automaton has 4614 states and 5862 transitions. Word has length 141 [2022-01-11 06:05:18,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:18,440 INFO L470 AbstractCegarLoop]: Abstraction has 4614 states and 5862 transitions. [2022-01-11 06:05:18,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:18,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4614 states and 5862 transitions. [2022-01-11 06:05:18,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:05:18,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:18,443 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:18,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 06:05:18,444 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:18,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:18,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1894579383, now seen corresponding path program 1 times [2022-01-11 06:05:18,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:18,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996751986] [2022-01-11 06:05:18,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:18,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:18,481 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 06:05:18,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:18,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996751986] [2022-01-11 06:05:18,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996751986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:18,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:18,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:18,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809864609] [2022-01-11 06:05:18,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:18,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:18,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:18,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:18,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:18,483 INFO L87 Difference]: Start difference. First operand 4614 states and 5862 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:18,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:18,957 INFO L93 Difference]: Finished difference Result 13432 states and 17038 transitions. [2022-01-11 06:05:18,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:18,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-01-11 06:05:18,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:18,975 INFO L225 Difference]: With dead ends: 13432 [2022-01-11 06:05:18,976 INFO L226 Difference]: Without dead ends: 8895 [2022-01-11 06:05:18,984 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 06:05:18,984 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 613 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:18,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 1565 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:18,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8895 states. [2022-01-11 06:05:19,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8895 to 8593. [2022-01-11 06:05:19,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8593 states, 8592 states have (on average 1.263733705772812) internal successors, (10858), 8592 states have internal predecessors, (10858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8593 states to 8593 states and 10858 transitions. [2022-01-11 06:05:19,453 INFO L78 Accepts]: Start accepts. Automaton has 8593 states and 10858 transitions. Word has length 142 [2022-01-11 06:05:19,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:19,453 INFO L470 AbstractCegarLoop]: Abstraction has 8593 states and 10858 transitions. [2022-01-11 06:05:19,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 8593 states and 10858 transitions. [2022-01-11 06:05:19,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:05:19,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:19,457 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:19,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 06:05:19,458 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:19,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:19,458 INFO L85 PathProgramCache]: Analyzing trace with hash 484265748, now seen corresponding path program 1 times [2022-01-11 06:05:19,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:19,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10970646] [2022-01-11 06:05:19,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:19,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:19,480 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 06:05:19,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:19,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10970646] [2022-01-11 06:05:19,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10970646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:19,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:19,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:19,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222183648] [2022-01-11 06:05:19,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:19,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:19,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:19,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:19,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:19,481 INFO L87 Difference]: Start difference. First operand 8593 states and 10858 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:19,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:19,820 INFO L93 Difference]: Finished difference Result 17074 states and 21584 transitions. [2022-01-11 06:05:19,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:19,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-01-11 06:05:19,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:19,836 INFO L225 Difference]: With dead ends: 17074 [2022-01-11 06:05:19,836 INFO L226 Difference]: Without dead ends: 8523 [2022-01-11 06:05:19,846 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 06:05:19,847 INFO L933 BasicCegarLoop]: 701 mSDtfsCounter, 696 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 701 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 06:05:19,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 701 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8523 states. [2022-01-11 06:05:20,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8523 to 8523. [2022-01-11 06:05:20,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8523 states, 8522 states have (on average 1.26437455996245) internal successors, (10775), 8522 states have internal predecessors, (10775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8523 states to 8523 states and 10775 transitions. [2022-01-11 06:05:20,198 INFO L78 Accepts]: Start accepts. Automaton has 8523 states and 10775 transitions. Word has length 142 [2022-01-11 06:05:20,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:20,199 INFO L470 AbstractCegarLoop]: Abstraction has 8523 states and 10775 transitions. [2022-01-11 06:05:20,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:20,199 INFO L276 IsEmpty]: Start isEmpty. Operand 8523 states and 10775 transitions. [2022-01-11 06:05:20,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 06:05:20,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:20,202 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:20,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 06:05:20,202 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:20,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:20,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1228239612, now seen corresponding path program 1 times [2022-01-11 06:05:20,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:20,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677574599] [2022-01-11 06:05:20,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:20,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:20,232 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 06:05:20,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:20,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677574599] [2022-01-11 06:05:20,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677574599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:20,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:20,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:20,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418139046] [2022-01-11 06:05:20,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:20,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:20,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:20,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:20,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:20,233 INFO L87 Difference]: Start difference. First operand 8523 states and 10775 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:20,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:20,849 INFO L93 Difference]: Finished difference Result 24712 states and 31209 transitions. [2022-01-11 06:05:20,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:20,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-11 06:05:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:20,894 INFO L225 Difference]: With dead ends: 24712 [2022-01-11 06:05:20,894 INFO L226 Difference]: Without dead ends: 16266 [2022-01-11 06:05:20,902 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 06:05:20,903 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 613 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:20,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 1546 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:20,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16266 states. [2022-01-11 06:05:21,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16266 to 15832. [2022-01-11 06:05:21,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15832 states, 15831 states have (on average 1.25923820352473) internal successors, (19935), 15831 states have internal predecessors, (19935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15832 states to 15832 states and 19935 transitions. [2022-01-11 06:05:21,809 INFO L78 Accepts]: Start accepts. Automaton has 15832 states and 19935 transitions. Word has length 143 [2022-01-11 06:05:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:21,809 INFO L470 AbstractCegarLoop]: Abstraction has 15832 states and 19935 transitions. [2022-01-11 06:05:21,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:21,809 INFO L276 IsEmpty]: Start isEmpty. Operand 15832 states and 19935 transitions. [2022-01-11 06:05:21,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 06:05:21,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:21,815 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:21,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 06:05:21,815 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:21,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:21,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1015181212, now seen corresponding path program 1 times [2022-01-11 06:05:21,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:21,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021122889] [2022-01-11 06:05:21,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:21,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:21,837 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 06:05:21,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:21,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021122889] [2022-01-11 06:05:21,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021122889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:21,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:21,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:21,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404194659] [2022-01-11 06:05:21,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:21,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:21,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:21,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:21,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:21,839 INFO L87 Difference]: Start difference. First operand 15832 states and 19935 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:22,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:22,414 INFO L93 Difference]: Finished difference Result 31546 states and 39732 transitions. [2022-01-11 06:05:22,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:22,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-11 06:05:22,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:22,443 INFO L225 Difference]: With dead ends: 31546 [2022-01-11 06:05:22,443 INFO L226 Difference]: Without dead ends: 15763 [2022-01-11 06:05:22,462 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 06:05:22,463 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 694 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 700 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 06:05:22,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 700 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:22,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15763 states. [2022-01-11 06:05:23,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15763 to 15763. [2022-01-11 06:05:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15763 states, 15762 states have (on average 1.2596117244004568) internal successors, (19854), 15762 states have internal predecessors, (19854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:23,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15763 states to 15763 states and 19854 transitions. [2022-01-11 06:05:23,206 INFO L78 Accepts]: Start accepts. Automaton has 15763 states and 19854 transitions. Word has length 143 [2022-01-11 06:05:23,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:23,206 INFO L470 AbstractCegarLoop]: Abstraction has 15763 states and 19854 transitions. [2022-01-11 06:05:23,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:23,207 INFO L276 IsEmpty]: Start isEmpty. Operand 15763 states and 19854 transitions. [2022-01-11 06:05:23,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-11 06:05:23,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:23,214 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:23,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 06:05:23,214 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:23,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:23,215 INFO L85 PathProgramCache]: Analyzing trace with hash -267207930, now seen corresponding path program 1 times [2022-01-11 06:05:23,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:23,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666558793] [2022-01-11 06:05:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:23,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:23,253 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 06:05:23,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:23,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666558793] [2022-01-11 06:05:23,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666558793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:23,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:23,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:23,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34211191] [2022-01-11 06:05:23,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:23,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:23,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:23,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:23,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:23,254 INFO L87 Difference]: Start difference. First operand 15763 states and 19854 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:24,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:24,623 INFO L93 Difference]: Finished difference Result 45359 states and 57070 transitions. [2022-01-11 06:05:24,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:24,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-01-11 06:05:24,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:24,700 INFO L225 Difference]: With dead ends: 45359 [2022-01-11 06:05:24,700 INFO L226 Difference]: Without dead ends: 29673 [2022-01-11 06:05:24,717 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 06:05:24,718 INFO L933 BasicCegarLoop]: 828 mSDtfsCounter, 613 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:24,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 1498 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29673 states. [2022-01-11 06:05:26,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29673 to 29143. [2022-01-11 06:05:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29143 states, 29142 states have (on average 1.254958479170956) internal successors, (36572), 29142 states have internal predecessors, (36572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:26,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29143 states to 29143 states and 36572 transitions. [2022-01-11 06:05:26,246 INFO L78 Accepts]: Start accepts. Automaton has 29143 states and 36572 transitions. Word has length 144 [2022-01-11 06:05:26,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:26,246 INFO L470 AbstractCegarLoop]: Abstraction has 29143 states and 36572 transitions. [2022-01-11 06:05:26,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:26,247 INFO L276 IsEmpty]: Start isEmpty. Operand 29143 states and 36572 transitions. [2022-01-11 06:05:26,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-11 06:05:26,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:26,258 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:26,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 06:05:26,259 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:26,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:26,259 INFO L85 PathProgramCache]: Analyzing trace with hash 2086286051, now seen corresponding path program 1 times [2022-01-11 06:05:26,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:26,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567558633] [2022-01-11 06:05:26,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:26,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:26,279 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 06:05:26,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:26,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567558633] [2022-01-11 06:05:26,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567558633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:26,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:26,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:26,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685680794] [2022-01-11 06:05:26,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:26,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:26,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:26,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:26,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:26,280 INFO L87 Difference]: Start difference. First operand 29143 states and 36572 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:27,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:27,574 INFO L93 Difference]: Finished difference Result 58162 states and 73000 transitions. [2022-01-11 06:05:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:27,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-01-11 06:05:27,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:27,623 INFO L225 Difference]: With dead ends: 58162 [2022-01-11 06:05:27,623 INFO L226 Difference]: Without dead ends: 29075 [2022-01-11 06:05:27,658 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 06:05:27,662 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 692 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 699 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 06:05:27,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 699 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:27,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29075 states. [2022-01-11 06:05:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29075 to 29075. [2022-01-11 06:05:29,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29075 states, 29074 states have (on average 1.2551764463094173) internal successors, (36493), 29074 states have internal predecessors, (36493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:29,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29075 states to 29075 states and 36493 transitions. [2022-01-11 06:05:29,405 INFO L78 Accepts]: Start accepts. Automaton has 29075 states and 36493 transitions. Word has length 144 [2022-01-11 06:05:29,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:29,405 INFO L470 AbstractCegarLoop]: Abstraction has 29075 states and 36493 transitions. [2022-01-11 06:05:29,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:29,405 INFO L276 IsEmpty]: Start isEmpty. Operand 29075 states and 36493 transitions. [2022-01-11 06:05:29,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-11 06:05:29,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:29,415 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:29,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 06:05:29,415 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:29,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:29,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1105455498, now seen corresponding path program 1 times [2022-01-11 06:05:29,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:29,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643159657] [2022-01-11 06:05:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:29,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:29,449 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 06:05:29,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:29,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643159657] [2022-01-11 06:05:29,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643159657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:29,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:29,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:29,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945083852] [2022-01-11 06:05:29,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:29,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:29,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:29,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:29,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:29,451 INFO L87 Difference]: Start difference. First operand 29075 states and 36493 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:31,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:31,797 INFO L93 Difference]: Finished difference Result 82802 states and 103731 transitions. [2022-01-11 06:05:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:31,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-01-11 06:05:31,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:31,882 INFO L225 Difference]: With dead ends: 82802 [2022-01-11 06:05:31,882 INFO L226 Difference]: Without dead ends: 53804 [2022-01-11 06:05:31,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:31,918 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 612 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:31,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 1451 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53804 states. [2022-01-11 06:05:34,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53804 to 53418. [2022-01-11 06:05:34,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53418 states, 53417 states have (on average 1.251155999026527) internal successors, (66833), 53417 states have internal predecessors, (66833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:34,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53418 states to 53418 states and 66833 transitions. [2022-01-11 06:05:34,649 INFO L78 Accepts]: Start accepts. Automaton has 53418 states and 66833 transitions. Word has length 145 [2022-01-11 06:05:34,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:34,650 INFO L470 AbstractCegarLoop]: Abstraction has 53418 states and 66833 transitions. [2022-01-11 06:05:34,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:34,650 INFO L276 IsEmpty]: Start isEmpty. Operand 53418 states and 66833 transitions. [2022-01-11 06:05:34,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-11 06:05:34,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:34,666 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:34,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 06:05:34,666 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:34,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:34,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1055947605, now seen corresponding path program 1 times [2022-01-11 06:05:34,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:34,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559045062] [2022-01-11 06:05:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:34,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:34,691 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 06:05:34,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:34,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559045062] [2022-01-11 06:05:34,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559045062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:34,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:34,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:34,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963924581] [2022-01-11 06:05:34,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:34,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:34,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:34,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:34,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:34,692 INFO L87 Difference]: Start difference. First operand 53418 states and 66833 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:37,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:37,521 INFO L93 Difference]: Finished difference Result 106706 states and 133516 transitions. [2022-01-11 06:05:37,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:37,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-01-11 06:05:37,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:37,608 INFO L225 Difference]: With dead ends: 106706 [2022-01-11 06:05:37,608 INFO L226 Difference]: Without dead ends: 53351 [2022-01-11 06:05:37,647 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 06:05:37,648 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 690 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:37,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 698 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:37,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53351 states. [2022-01-11 06:05:40,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53351 to 53351. [2022-01-11 06:05:40,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53351 states, 53350 states have (on average 1.2512839737582007) internal successors, (66756), 53350 states have internal predecessors, (66756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:40,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53351 states to 53351 states and 66756 transitions. [2022-01-11 06:05:40,782 INFO L78 Accepts]: Start accepts. Automaton has 53351 states and 66756 transitions. Word has length 145 [2022-01-11 06:05:40,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:40,782 INFO L470 AbstractCegarLoop]: Abstraction has 53351 states and 66756 transitions. [2022-01-11 06:05:40,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:40,783 INFO L276 IsEmpty]: Start isEmpty. Operand 53351 states and 66756 transitions. [2022-01-11 06:05:40,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-11 06:05:40,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:40,798 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:40,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 06:05:40,798 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:40,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:40,799 INFO L85 PathProgramCache]: Analyzing trace with hash 137249146, now seen corresponding path program 1 times [2022-01-11 06:05:40,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:40,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604448416] [2022-01-11 06:05:40,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:40,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:40,872 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 06:05:40,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:40,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604448416] [2022-01-11 06:05:40,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604448416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:40,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:40,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:40,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054689210] [2022-01-11 06:05:40,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:40,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:40,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:40,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:40,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:40,874 INFO L87 Difference]: Start difference. First operand 53351 states and 66756 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:45,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:45,795 INFO L93 Difference]: Finished difference Result 154529 states and 193102 transitions. [2022-01-11 06:05:45,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:45,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-01-11 06:05:45,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:45,988 INFO L225 Difference]: With dead ends: 154529 [2022-01-11 06:05:45,988 INFO L226 Difference]: Without dead ends: 101255 [2022-01-11 06:05:46,043 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 06:05:46,043 INFO L933 BasicCegarLoop]: 1303 mSDtfsCounter, 601 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:46,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 1979 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:46,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101255 states. [2022-01-11 06:05:51,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101255 to 101255. [2022-01-11 06:05:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101255 states, 101254 states have (on average 1.2410867718806171) internal successors, (125665), 101254 states have internal predecessors, (125665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101255 states to 101255 states and 125665 transitions. [2022-01-11 06:05:51,617 INFO L78 Accepts]: Start accepts. Automaton has 101255 states and 125665 transitions. Word has length 146 [2022-01-11 06:05:51,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:51,619 INFO L470 AbstractCegarLoop]: Abstraction has 101255 states and 125665 transitions. [2022-01-11 06:05:51,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:51,619 INFO L276 IsEmpty]: Start isEmpty. Operand 101255 states and 125665 transitions. [2022-01-11 06:05:51,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-11 06:05:51,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:51,676 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:51,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 06:05:51,676 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:51,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:51,677 INFO L85 PathProgramCache]: Analyzing trace with hash 700064815, now seen corresponding path program 1 times [2022-01-11 06:05:51,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:51,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71530934] [2022-01-11 06:05:51,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:51,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:51,740 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 06:05:51,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:51,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71530934] [2022-01-11 06:05:51,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71530934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:51,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:51,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:51,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802256553] [2022-01-11 06:05:51,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:51,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:51,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:51,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:51,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:51,741 INFO L87 Difference]: Start difference. First operand 101255 states and 125665 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:00,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:00,946 INFO L93 Difference]: Finished difference Result 248185 states and 307879 transitions. [2022-01-11 06:06:00,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:00,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2022-01-11 06:06:00,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:01,414 INFO L225 Difference]: With dead ends: 248185 [2022-01-11 06:06:01,414 INFO L226 Difference]: Without dead ends: 146999 [2022-01-11 06:06:01,508 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 06:06:01,521 INFO L933 BasicCegarLoop]: 688 mSDtfsCounter, 471 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:01,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1279 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:01,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146999 states. [2022-01-11 06:06:09,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146999 to 146613. [2022-01-11 06:06:10,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146613 states, 146612 states have (on average 1.2346942951463726) internal successors, (181021), 146612 states have internal predecessors, (181021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146613 states to 146613 states and 181021 transitions. [2022-01-11 06:06:10,501 INFO L78 Accepts]: Start accepts. Automaton has 146613 states and 181021 transitions. Word has length 189 [2022-01-11 06:06:10,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:10,501 INFO L470 AbstractCegarLoop]: Abstraction has 146613 states and 181021 transitions. [2022-01-11 06:06:10,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand 146613 states and 181021 transitions. [2022-01-11 06:06:10,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-11 06:06:10,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:10,592 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:10,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 06:06:10,592 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:10,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:10,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1690861654, now seen corresponding path program 1 times [2022-01-11 06:06:10,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:10,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974186934] [2022-01-11 06:06:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:10,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:10,640 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 06:06:10,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:10,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974186934] [2022-01-11 06:06:10,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974186934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:10,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:10,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:10,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015980519] [2022-01-11 06:06:10,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:10,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:10,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:10,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:10,641 INFO L87 Difference]: Start difference. First operand 146613 states and 181021 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)