/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.10.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:06:00,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:06:00,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:06:00,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:06:00,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:06:00,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:06:00,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:06:00,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:06:00,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:06:00,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:06:00,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:06:00,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:06:00,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:06:00,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:06:00,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:06:00,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:06:00,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:06:00,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:06:00,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:06:00,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:06:00,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:06:00,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:06:00,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:06:00,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:06:00,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:06:00,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:06:00,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:06:00,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:06:00,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:06:00,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:06:00,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:06:00,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:06:00,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:06:00,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:06:00,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:06:00,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:06:00,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:06:00,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:06:00,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:06:00,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:06:00,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:06:00,172 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 06:06:00,210 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:06:00,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:06:00,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:06:00,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:06:00,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:06:00,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:06:00,212 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:06:00,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:06:00,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:06:00,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:06:00,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:06:00,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:06:00,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:06:00,214 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:06:00,214 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:06:00,214 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:06:00,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:06:00,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:06:00,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:06:00,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:06:00,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:06:00,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:06:00,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:06:00,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:06:00,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:06:00,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:06:00,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:06:00,215 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:06:00,215 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:06:00,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:06:00,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:06:00,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:06:00,217 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:06:00,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:06:00,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:06:00,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:06:00,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:06:00,526 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:06:00,526 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:06:00,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.10.cil-1.c [2022-01-11 06:06:00,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b5ea4c0/ede1086a24dc41058a3f5d72631c6a1a/FLAGf4212158e [2022-01-11 06:06:01,029 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:06:01,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.10.cil-1.c [2022-01-11 06:06:01,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b5ea4c0/ede1086a24dc41058a3f5d72631c6a1a/FLAGf4212158e [2022-01-11 06:06:01,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b5ea4c0/ede1086a24dc41058a3f5d72631c6a1a [2022-01-11 06:06:01,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:06:01,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:06:01,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:06:01,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:06:01,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:06:01,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:06:01" (1/1) ... [2022-01-11 06:06:01,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78e7a4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:01, skipping insertion in model container [2022-01-11 06:06:01,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:06:01" (1/1) ... [2022-01-11 06:06:01,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:06:01,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:06:01,847 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.10.cil-1.c[671,684] [2022-01-11 06:06:01,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:06:02,000 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:06:02,009 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.10.cil-1.c[671,684] [2022-01-11 06:06:02,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:06:02,113 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:06:02,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:02 WrapperNode [2022-01-11 06:06:02,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:06:02,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:06:02,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:06:02,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:06:02,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:02" (1/1) ... [2022-01-11 06:06:02,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:02" (1/1) ... [2022-01-11 06:06:02,232 INFO L137 Inliner]: procedures = 48, calls = 62, calls flagged for inlining = 57, calls inlined = 210, statements flattened = 3198 [2022-01-11 06:06:02,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:06:02,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:06:02,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:06:02,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:06:02,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:02" (1/1) ... [2022-01-11 06:06:02,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:02" (1/1) ... [2022-01-11 06:06:02,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:02" (1/1) ... [2022-01-11 06:06:02,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:02" (1/1) ... [2022-01-11 06:06:02,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:02" (1/1) ... [2022-01-11 06:06:02,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:02" (1/1) ... [2022-01-11 06:06:02,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:02" (1/1) ... [2022-01-11 06:06:02,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:06:02,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:06:02,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:06:02,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:06:02,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:02" (1/1) ... [2022-01-11 06:06:02,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:06:02,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:06:02,393 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 06:06:02,401 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 06:06:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:06:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:06:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:06:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:06:02,591 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:06:02,592 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:06:04,363 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:06:04,383 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:06:04,385 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-01-11 06:06:04,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:06:04 BoogieIcfgContainer [2022-01-11 06:06:04,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:06:04,390 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:06:04,390 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:06:04,392 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:06:04,394 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:06:04" (1/1) ... [2022-01-11 06:06:04,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:06:04 BasicIcfg [2022-01-11 06:06:04,798 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:06:04,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:06:04,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:06:04,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:06:04,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:06:01" (1/4) ... [2022-01-11 06:06:04,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4190e8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:06:04, skipping insertion in model container [2022-01-11 06:06:04,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:02" (2/4) ... [2022-01-11 06:06:04,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4190e8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:06:04, skipping insertion in model container [2022-01-11 06:06:04,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:06:04" (3/4) ... [2022-01-11 06:06:04,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4190e8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:06:04, skipping insertion in model container [2022-01-11 06:06:04,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:06:04" (4/4) ... [2022-01-11 06:06:04,806 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.10.cil-1.cTransformedIcfg [2022-01-11 06:06:04,811 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:06:04,811 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 06:06:04,861 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:06:04,868 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 06:06:04,868 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 06:06:04,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 1376 states, 1373 states have (on average 1.5083758193736343) internal successors, (2071), 1375 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:04,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:04,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:04,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:04,928 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:04,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:04,933 INFO L85 PathProgramCache]: Analyzing trace with hash 746891946, now seen corresponding path program 1 times [2022-01-11 06:06:04,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:04,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142288181] [2022-01-11 06:06:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:04,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:05,321 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 06:06:05,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:05,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142288181] [2022-01-11 06:06:05,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142288181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:05,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:05,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:05,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201489236] [2022-01-11 06:06:05,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:05,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:05,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:05,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:05,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:05,362 INFO L87 Difference]: Start difference. First operand has 1376 states, 1373 states have (on average 1.5083758193736343) internal successors, (2071), 1375 states have internal predecessors, (2071), 0 states have call successors, (0), 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 47.333333333333336) internal successors, (142), 2 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 06:06:05,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:05,639 INFO L93 Difference]: Finished difference Result 3889 states and 5840 transitions. [2022-01-11 06:06:05,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:05,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:05,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:05,669 INFO L225 Difference]: With dead ends: 3889 [2022-01-11 06:06:05,728 INFO L226 Difference]: Without dead ends: 2522 [2022-01-11 06:06:05,739 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 06:06:05,748 INFO L933 BasicCegarLoop]: 2035 mSDtfsCounter, 1907 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 3842 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 06:06:05,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1907 Valid, 3842 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:05,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2022-01-11 06:06:05,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2518. [2022-01-11 06:06:05,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4817170111287759) internal successors, (3728), 2517 states have internal predecessors, (3728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3728 transitions. [2022-01-11 06:06:05,901 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3728 transitions. Word has length 142 [2022-01-11 06:06:05,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:05,902 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3728 transitions. [2022-01-11 06:06:05,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3728 transitions. [2022-01-11 06:06:05,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:05,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:05,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:05,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:06:05,905 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:05,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:05,906 INFO L85 PathProgramCache]: Analyzing trace with hash 861828554, now seen corresponding path program 1 times [2022-01-11 06:06:05,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:05,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654439442] [2022-01-11 06:06:05,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:05,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:06,021 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 06:06:06,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:06,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654439442] [2022-01-11 06:06:06,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654439442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:06,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:06,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:06,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341536508] [2022-01-11 06:06:06,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:06,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:06,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:06,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:06,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:06,024 INFO L87 Difference]: Start difference. First operand 2518 states and 3728 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:06,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:06,115 INFO L93 Difference]: Finished difference Result 5018 states and 7426 transitions. [2022-01-11 06:06:06,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:06,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:06,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:06,126 INFO L225 Difference]: With dead ends: 5018 [2022-01-11 06:06:06,127 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:06,135 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 06:06:06,137 INFO L933 BasicCegarLoop]: 2025 mSDtfsCounter, 2013 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 2025 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 06:06:06,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2013 Valid, 2025 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:06,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:06,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:06,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.478537360890302) internal successors, (3720), 2517 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3720 transitions. [2022-01-11 06:06:06,226 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3720 transitions. Word has length 142 [2022-01-11 06:06:06,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:06,226 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3720 transitions. [2022-01-11 06:06:06,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:06,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3720 transitions. [2022-01-11 06:06:06,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:06,230 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:06,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:06,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:06:06,231 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:06,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:06,231 INFO L85 PathProgramCache]: Analyzing trace with hash 311346858, now seen corresponding path program 1 times [2022-01-11 06:06:06,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:06,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697121214] [2022-01-11 06:06:06,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:06,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:06,389 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 06:06:06,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:06,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697121214] [2022-01-11 06:06:06,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697121214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:06,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:06,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:06,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256625582] [2022-01-11 06:06:06,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:06,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:06,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:06,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:06,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:06,391 INFO L87 Difference]: Start difference. First operand 2518 states and 3720 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:06,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:06,485 INFO L93 Difference]: Finished difference Result 5017 states and 7409 transitions. [2022-01-11 06:06:06,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:06,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:06,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:06,495 INFO L225 Difference]: With dead ends: 5017 [2022-01-11 06:06:06,495 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:06,503 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 06:06:06,507 INFO L933 BasicCegarLoop]: 2020 mSDtfsCounter, 2007 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 2020 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 06:06:06,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 2020 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:06,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4753577106518283) internal successors, (3712), 2517 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:06,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3712 transitions. [2022-01-11 06:06:06,607 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3712 transitions. Word has length 142 [2022-01-11 06:06:06,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:06,608 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3712 transitions. [2022-01-11 06:06:06,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:06,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3712 transitions. [2022-01-11 06:06:06,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:06,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:06,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:06,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:06:06,615 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:06,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1784620598, now seen corresponding path program 1 times [2022-01-11 06:06:06,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:06,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585405960] [2022-01-11 06:06:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:06,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:06,713 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 06:06:06,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:06,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585405960] [2022-01-11 06:06:06,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585405960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:06,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:06,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:06,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574074323] [2022-01-11 06:06:06,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:06,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:06,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:06,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:06,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:06,716 INFO L87 Difference]: Start difference. First operand 2518 states and 3712 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:06,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:06,844 INFO L93 Difference]: Finished difference Result 5016 states and 7392 transitions. [2022-01-11 06:06:06,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:06,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:06,853 INFO L225 Difference]: With dead ends: 5016 [2022-01-11 06:06:06,854 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:06,857 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 06:06:06,863 INFO L933 BasicCegarLoop]: 2015 mSDtfsCounter, 2001 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 2015 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 06:06:06,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2001 Valid, 2015 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:06,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:06,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4721780604133545) internal successors, (3704), 2517 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:06,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3704 transitions. [2022-01-11 06:06:06,977 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3704 transitions. Word has length 142 [2022-01-11 06:06:06,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:06,977 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3704 transitions. [2022-01-11 06:06:06,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:06,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3704 transitions. [2022-01-11 06:06:06,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:06,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:06,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:06,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:06:06,980 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:06,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:06,980 INFO L85 PathProgramCache]: Analyzing trace with hash -328211798, now seen corresponding path program 1 times [2022-01-11 06:06:06,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:06,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365835703] [2022-01-11 06:06:06,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:06,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:07,058 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 06:06:07,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:07,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365835703] [2022-01-11 06:06:07,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365835703] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:07,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:07,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:07,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649854919] [2022-01-11 06:06:07,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:07,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:07,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:07,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:07,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:07,062 INFO L87 Difference]: Start difference. First operand 2518 states and 3704 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:07,176 INFO L93 Difference]: Finished difference Result 5015 states and 7375 transitions. [2022-01-11 06:06:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:07,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:07,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:07,186 INFO L225 Difference]: With dead ends: 5015 [2022-01-11 06:06:07,187 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:07,191 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 06:06:07,192 INFO L933 BasicCegarLoop]: 2010 mSDtfsCounter, 1995 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1995 SdHoareTripleChecker+Valid, 2010 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 06:06:07,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1995 Valid, 2010 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:07,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:07,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4689984101748808) internal successors, (3696), 2517 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:07,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3696 transitions. [2022-01-11 06:06:07,285 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3696 transitions. Word has length 142 [2022-01-11 06:06:07,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:07,286 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3696 transitions. [2022-01-11 06:06:07,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:07,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3696 transitions. [2022-01-11 06:06:07,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:07,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:07,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:07,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:06:07,295 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:07,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:07,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1389609526, now seen corresponding path program 1 times [2022-01-11 06:06:07,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:07,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13152974] [2022-01-11 06:06:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:07,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:07,363 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 06:06:07,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:07,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13152974] [2022-01-11 06:06:07,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13152974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:07,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:07,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:07,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453920285] [2022-01-11 06:06:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:07,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:07,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:07,365 INFO L87 Difference]: Start difference. First operand 2518 states and 3696 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:07,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:07,477 INFO L93 Difference]: Finished difference Result 5013 states and 7356 transitions. [2022-01-11 06:06:07,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:07,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:07,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:07,487 INFO L225 Difference]: With dead ends: 5013 [2022-01-11 06:06:07,487 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:07,492 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 06:06:07,493 INFO L933 BasicCegarLoop]: 2005 mSDtfsCounter, 1988 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 2005 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 06:06:07,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1988 Valid, 2005 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:07,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:07,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.465818759936407) internal successors, (3688), 2517 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3688 transitions. [2022-01-11 06:06:07,596 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3688 transitions. Word has length 142 [2022-01-11 06:06:07,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:07,597 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3688 transitions. [2022-01-11 06:06:07,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:07,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3688 transitions. [2022-01-11 06:06:07,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:07,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:07,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:07,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:06:07,599 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:07,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:07,599 INFO L85 PathProgramCache]: Analyzing trace with hash 562356458, now seen corresponding path program 1 times [2022-01-11 06:06:07,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:07,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614536662] [2022-01-11 06:06:07,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:07,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:07,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:07,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614536662] [2022-01-11 06:06:07,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614536662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:07,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:07,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:07,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249260951] [2022-01-11 06:06:07,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:07,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:07,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:07,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:07,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:07,676 INFO L87 Difference]: Start difference. First operand 2518 states and 3688 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:07,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:07,778 INFO L93 Difference]: Finished difference Result 5012 states and 7339 transitions. [2022-01-11 06:06:07,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:07,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:07,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:07,788 INFO L225 Difference]: With dead ends: 5012 [2022-01-11 06:06:07,788 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:07,793 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 06:06:07,794 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1982 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 2000 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 06:06:07,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 2000 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:07,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:07,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4626391096979332) internal successors, (3680), 2517 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:07,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3680 transitions. [2022-01-11 06:06:07,919 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3680 transitions. Word has length 142 [2022-01-11 06:06:07,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:07,920 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3680 transitions. [2022-01-11 06:06:07,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:07,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3680 transitions. [2022-01-11 06:06:07,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:07,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:07,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:07,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:06:07,922 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:07,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:07,922 INFO L85 PathProgramCache]: Analyzing trace with hash -67413558, now seen corresponding path program 1 times [2022-01-11 06:06:07,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:07,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749322587] [2022-01-11 06:06:07,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:07,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:07,974 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 06:06:07,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:07,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749322587] [2022-01-11 06:06:07,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749322587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:07,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:07,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:07,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260482863] [2022-01-11 06:06:07,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:07,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:07,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:07,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:07,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:07,976 INFO L87 Difference]: Start difference. First operand 2518 states and 3680 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:08,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:08,092 INFO L93 Difference]: Finished difference Result 5011 states and 7322 transitions. [2022-01-11 06:06:08,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:08,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:08,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:08,103 INFO L225 Difference]: With dead ends: 5011 [2022-01-11 06:06:08,103 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:08,107 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 06:06:08,108 INFO L933 BasicCegarLoop]: 1995 mSDtfsCounter, 1976 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 1995 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 06:06:08,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1976 Valid, 1995 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:08,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:08,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:08,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4594594594594594) internal successors, (3672), 2517 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:08,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3672 transitions. [2022-01-11 06:06:08,223 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3672 transitions. Word has length 142 [2022-01-11 06:06:08,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:08,225 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3672 transitions. [2022-01-11 06:06:08,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3672 transitions. [2022-01-11 06:06:08,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:08,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:08,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:08,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:06:08,228 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:08,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:08,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1851933930, now seen corresponding path program 1 times [2022-01-11 06:06:08,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:08,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383927381] [2022-01-11 06:06:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:08,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:08,273 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 06:06:08,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:08,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383927381] [2022-01-11 06:06:08,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383927381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:08,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:08,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:08,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788272783] [2022-01-11 06:06:08,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:08,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:08,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:08,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:08,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:08,276 INFO L87 Difference]: Start difference. First operand 2518 states and 3672 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:08,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:08,411 INFO L93 Difference]: Finished difference Result 5010 states and 7305 transitions. [2022-01-11 06:06:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:08,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:08,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:08,421 INFO L225 Difference]: With dead ends: 5010 [2022-01-11 06:06:08,421 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:08,425 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 06:06:08,427 INFO L933 BasicCegarLoop]: 1990 mSDtfsCounter, 1970 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 1990 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 06:06:08,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1970 Valid, 1990 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:08,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:08,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:08,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4562798092209857) internal successors, (3664), 2517 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3664 transitions. [2022-01-11 06:06:08,549 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3664 transitions. Word has length 142 [2022-01-11 06:06:08,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:08,549 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3664 transitions. [2022-01-11 06:06:08,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:08,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3664 transitions. [2022-01-11 06:06:08,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:08,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:08,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:08,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:06:08,551 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:08,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:08,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1411287606, now seen corresponding path program 1 times [2022-01-11 06:06:08,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:08,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891339250] [2022-01-11 06:06:08,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:08,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:08,607 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 06:06:08,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:08,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891339250] [2022-01-11 06:06:08,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891339250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:08,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:08,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:08,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632995720] [2022-01-11 06:06:08,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:08,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:08,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:08,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:08,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:08,609 INFO L87 Difference]: Start difference. First operand 2518 states and 3664 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:08,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:08,727 INFO L93 Difference]: Finished difference Result 5009 states and 7288 transitions. [2022-01-11 06:06:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:08,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:08,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:08,755 INFO L225 Difference]: With dead ends: 5009 [2022-01-11 06:06:08,756 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:08,761 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 06:06:08,761 INFO L933 BasicCegarLoop]: 1985 mSDtfsCounter, 1964 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 1985 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 06:06:08,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1964 Valid, 1985 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:08,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4531001589825119) internal successors, (3656), 2517 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3656 transitions. [2022-01-11 06:06:08,921 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3656 transitions. Word has length 142 [2022-01-11 06:06:08,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:08,921 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3656 transitions. [2022-01-11 06:06:08,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:08,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3656 transitions. [2022-01-11 06:06:08,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:08,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:08,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:08,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:06:08,924 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:08,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:08,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1531488490, now seen corresponding path program 1 times [2022-01-11 06:06:08,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:08,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182400803] [2022-01-11 06:06:08,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:08,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:08,985 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 06:06:08,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:08,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182400803] [2022-01-11 06:06:08,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182400803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:08,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:08,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:08,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556886588] [2022-01-11 06:06:08,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:08,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:08,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:08,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:08,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:08,989 INFO L87 Difference]: Start difference. First operand 2518 states and 3656 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:09,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:09,157 INFO L93 Difference]: Finished difference Result 5008 states and 7271 transitions. [2022-01-11 06:06:09,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:09,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:09,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:09,166 INFO L225 Difference]: With dead ends: 5008 [2022-01-11 06:06:09,167 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:09,173 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 06:06:09,173 INFO L933 BasicCegarLoop]: 1954 mSDtfsCounter, 1833 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:09,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1833 Valid, 2062 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:09,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:09,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:09,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4403815580286168) internal successors, (3624), 2517 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3624 transitions. [2022-01-11 06:06:09,309 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3624 transitions. Word has length 142 [2022-01-11 06:06:09,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:09,309 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3624 transitions. [2022-01-11 06:06:09,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3624 transitions. [2022-01-11 06:06:09,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:09,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:09,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:09,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:06:09,311 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:09,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:09,312 INFO L85 PathProgramCache]: Analyzing trace with hash -356431287, now seen corresponding path program 1 times [2022-01-11 06:06:09,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:09,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841146719] [2022-01-11 06:06:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:09,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:09,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:09,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:09,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841146719] [2022-01-11 06:06:09,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841146719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:09,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:09,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:09,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103688204] [2022-01-11 06:06:09,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:09,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:09,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:09,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:09,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:09,368 INFO L87 Difference]: Start difference. First operand 2518 states and 3624 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:09,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:09,540 INFO L93 Difference]: Finished difference Result 5007 states and 7206 transitions. [2022-01-11 06:06:09,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:09,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:09,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:09,547 INFO L225 Difference]: With dead ends: 5007 [2022-01-11 06:06:09,548 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:09,553 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 06:06:09,555 INFO L933 BasicCegarLoop]: 1936 mSDtfsCounter, 1815 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1815 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:09,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1815 Valid, 2043 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:09,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:09,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4276629570747217) internal successors, (3592), 2517 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:09,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3592 transitions. [2022-01-11 06:06:09,690 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3592 transitions. Word has length 142 [2022-01-11 06:06:09,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:09,691 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3592 transitions. [2022-01-11 06:06:09,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:09,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3592 transitions. [2022-01-11 06:06:09,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:09,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:09,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:09,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:06:09,693 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:09,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:09,694 INFO L85 PathProgramCache]: Analyzing trace with hash 458590504, now seen corresponding path program 1 times [2022-01-11 06:06:09,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:09,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891994950] [2022-01-11 06:06:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:09,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:09,741 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 06:06:09,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:09,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891994950] [2022-01-11 06:06:09,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891994950] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:09,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:09,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:09,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262085377] [2022-01-11 06:06:09,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:09,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:09,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:09,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:09,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:09,743 INFO L87 Difference]: Start difference. First operand 2518 states and 3592 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:09,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:09,897 INFO L93 Difference]: Finished difference Result 5005 states and 7139 transitions. [2022-01-11 06:06:09,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:09,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:09,904 INFO L225 Difference]: With dead ends: 5005 [2022-01-11 06:06:09,904 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:09,910 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 06:06:09,912 INFO L933 BasicCegarLoop]: 1918 mSDtfsCounter, 1796 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:09,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 2024 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:09,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:10,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4149443561208268) internal successors, (3560), 2517 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:10,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3560 transitions. [2022-01-11 06:06:10,056 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3560 transitions. Word has length 142 [2022-01-11 06:06:10,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:10,057 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3560 transitions. [2022-01-11 06:06:10,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:10,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3560 transitions. [2022-01-11 06:06:10,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:10,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:10,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:10,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:06:10,058 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:10,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:10,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1149340025, now seen corresponding path program 1 times [2022-01-11 06:06:10,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:10,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601821043] [2022-01-11 06:06:10,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:10,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:10,104 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 06:06:10,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:10,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601821043] [2022-01-11 06:06:10,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601821043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:10,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:10,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:10,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250916802] [2022-01-11 06:06:10,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:10,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:10,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:10,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:10,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:10,106 INFO L87 Difference]: Start difference. First operand 2518 states and 3560 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:10,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:10,258 INFO L93 Difference]: Finished difference Result 5004 states and 7074 transitions. [2022-01-11 06:06:10,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:10,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:10,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:10,265 INFO L225 Difference]: With dead ends: 5004 [2022-01-11 06:06:10,265 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:10,270 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 06:06:10,271 INFO L933 BasicCegarLoop]: 1900 mSDtfsCounter, 1778 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1778 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:10,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1778 Valid, 2005 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:10,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:10,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4022257551669317) internal successors, (3528), 2517 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3528 transitions. [2022-01-11 06:06:10,428 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3528 transitions. Word has length 142 [2022-01-11 06:06:10,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:10,429 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3528 transitions. [2022-01-11 06:06:10,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:10,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3528 transitions. [2022-01-11 06:06:10,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:10,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:10,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:10,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:06:10,431 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:10,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:10,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1243043046, now seen corresponding path program 1 times [2022-01-11 06:06:10,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:10,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148973011] [2022-01-11 06:06:10,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:10,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:10,479 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 06:06:10,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:10,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148973011] [2022-01-11 06:06:10,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148973011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:10,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:10,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:10,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919149694] [2022-01-11 06:06:10,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:10,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:10,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:10,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:10,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:10,481 INFO L87 Difference]: Start difference. First operand 2518 states and 3528 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:10,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:10,655 INFO L93 Difference]: Finished difference Result 5003 states and 7009 transitions. [2022-01-11 06:06:10,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:10,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:10,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:10,661 INFO L225 Difference]: With dead ends: 5003 [2022-01-11 06:06:10,661 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:10,668 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 06:06:10,669 INFO L933 BasicCegarLoop]: 1882 mSDtfsCounter, 1760 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:10,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1760 Valid, 1986 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:10,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:10,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.3895071542130366) internal successors, (3496), 2517 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3496 transitions. [2022-01-11 06:06:10,808 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3496 transitions. Word has length 142 [2022-01-11 06:06:10,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:10,808 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3496 transitions. [2022-01-11 06:06:10,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:10,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3496 transitions. [2022-01-11 06:06:10,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:10,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:10,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:10,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:06:10,810 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:10,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:10,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1657581765, now seen corresponding path program 1 times [2022-01-11 06:06:10,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:10,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724495274] [2022-01-11 06:06:10,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:10,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:10,856 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 06:06:10,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:10,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724495274] [2022-01-11 06:06:10,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724495274] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:10,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:10,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:10,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216550898] [2022-01-11 06:06:10,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:10,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:10,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:10,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:10,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:10,858 INFO L87 Difference]: Start difference. First operand 2518 states and 3496 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:11,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:11,062 INFO L93 Difference]: Finished difference Result 5002 states and 6944 transitions. [2022-01-11 06:06:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:11,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:11,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:11,068 INFO L225 Difference]: With dead ends: 5002 [2022-01-11 06:06:11,069 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:11,073 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 06:06:11,074 INFO L933 BasicCegarLoop]: 1864 mSDtfsCounter, 1742 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:11,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1742 Valid, 1967 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:11,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:11,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:11,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.3767885532591415) internal successors, (3464), 2517 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3464 transitions. [2022-01-11 06:06:11,211 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3464 transitions. Word has length 142 [2022-01-11 06:06:11,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:11,212 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3464 transitions. [2022-01-11 06:06:11,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:11,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3464 transitions. [2022-01-11 06:06:11,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:11,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:11,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:11,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:06:11,214 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:11,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:11,214 INFO L85 PathProgramCache]: Analyzing trace with hash -610579036, now seen corresponding path program 1 times [2022-01-11 06:06:11,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:11,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866577525] [2022-01-11 06:06:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:11,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:11,261 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 06:06:11,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:11,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866577525] [2022-01-11 06:06:11,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866577525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:11,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:11,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:11,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195726254] [2022-01-11 06:06:11,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:11,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:11,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:11,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:11,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:11,263 INFO L87 Difference]: Start difference. First operand 2518 states and 3464 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:11,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:11,453 INFO L93 Difference]: Finished difference Result 5001 states and 6879 transitions. [2022-01-11 06:06:11,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:11,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:11,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:11,460 INFO L225 Difference]: With dead ends: 5001 [2022-01-11 06:06:11,461 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:11,465 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 06:06:11,466 INFO L933 BasicCegarLoop]: 1846 mSDtfsCounter, 1724 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:11,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1724 Valid, 1948 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:11,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:11,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:11,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.3640699523052464) internal successors, (3432), 2517 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3432 transitions. [2022-01-11 06:06:11,633 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3432 transitions. Word has length 142 [2022-01-11 06:06:11,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:11,634 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3432 transitions. [2022-01-11 06:06:11,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:11,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3432 transitions. [2022-01-11 06:06:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:11,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:11,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:11,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 06:06:11,636 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:11,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash 888461315, now seen corresponding path program 1 times [2022-01-11 06:06:11,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:11,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312923877] [2022-01-11 06:06:11,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:11,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:11,680 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 06:06:11,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:11,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312923877] [2022-01-11 06:06:11,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312923877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:11,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:11,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:11,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263536918] [2022-01-11 06:06:11,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:11,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:11,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:11,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:11,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:11,682 INFO L87 Difference]: Start difference. First operand 2518 states and 3432 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:11,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:11,869 INFO L93 Difference]: Finished difference Result 5000 states and 6814 transitions. [2022-01-11 06:06:11,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:11,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:11,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:11,875 INFO L225 Difference]: With dead ends: 5000 [2022-01-11 06:06:11,876 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:11,880 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 06:06:11,880 INFO L933 BasicCegarLoop]: 1828 mSDtfsCounter, 1706 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:11,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1706 Valid, 1929 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:11,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:12,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.3513513513513513) internal successors, (3400), 2517 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3400 transitions. [2022-01-11 06:06:12,032 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3400 transitions. Word has length 142 [2022-01-11 06:06:12,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:12,032 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3400 transitions. [2022-01-11 06:06:12,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:12,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3400 transitions. [2022-01-11 06:06:12,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:12,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:12,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:12,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 06:06:12,034 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:12,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:12,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1757613214, now seen corresponding path program 1 times [2022-01-11 06:06:12,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:12,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072870940] [2022-01-11 06:06:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:12,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:12,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:12,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072870940] [2022-01-11 06:06:12,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072870940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:12,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:12,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:12,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656697327] [2022-01-11 06:06:12,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:12,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:12,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:12,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:12,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:12,079 INFO L87 Difference]: Start difference. First operand 2518 states and 3400 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:12,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:12,246 INFO L93 Difference]: Finished difference Result 4999 states and 6749 transitions. [2022-01-11 06:06:12,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:12,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:12,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:12,253 INFO L225 Difference]: With dead ends: 4999 [2022-01-11 06:06:12,253 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 06:06:12,257 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 06:06:12,258 INFO L933 BasicCegarLoop]: 1810 mSDtfsCounter, 1688 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:12,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1688 Valid, 1910 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:12,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 06:06:12,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 06:06:12,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.3386327503974562) internal successors, (3368), 2517 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:12,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3368 transitions. [2022-01-11 06:06:12,387 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3368 transitions. Word has length 142 [2022-01-11 06:06:12,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:12,387 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3368 transitions. [2022-01-11 06:06:12,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:12,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3368 transitions. [2022-01-11 06:06:12,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:12,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:12,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:12,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 06:06:12,389 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:12,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:12,389 INFO L85 PathProgramCache]: Analyzing trace with hash -932025279, now seen corresponding path program 1 times [2022-01-11 06:06:12,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:12,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380230940] [2022-01-11 06:06:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:12,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:12,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:12,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380230940] [2022-01-11 06:06:12,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380230940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:12,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:12,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:06:12,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81049318] [2022-01-11 06:06:12,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:12,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:06:12,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:12,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:06:12,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:06:12,461 INFO L87 Difference]: Start difference. First operand 2518 states and 3368 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 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 06:06:12,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:12,865 INFO L93 Difference]: Finished difference Result 5962 states and 8034 transitions. [2022-01-11 06:06:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:06:12,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 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 06:06:12,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:12,873 INFO L225 Difference]: With dead ends: 5962 [2022-01-11 06:06:12,874 INFO L226 Difference]: Without dead ends: 3496 [2022-01-11 06:06:12,879 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 06:06:12,880 INFO L933 BasicCegarLoop]: 1948 mSDtfsCounter, 5074 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 4028 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:12,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5074 Valid, 4028 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:06:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2022-01-11 06:06:13,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 2524. [2022-01-11 06:06:13,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2522 states have (on average 1.3283108643933386) internal successors, (3350), 2523 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:13,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3350 transitions. [2022-01-11 06:06:13,079 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3350 transitions. Word has length 142 [2022-01-11 06:06:13,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:13,080 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 3350 transitions. [2022-01-11 06:06:13,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 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 06:06:13,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3350 transitions. [2022-01-11 06:06:13,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:13,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:13,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:13,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 06:06:13,081 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:13,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:13,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1373779774, now seen corresponding path program 1 times [2022-01-11 06:06:13,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:13,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913552792] [2022-01-11 06:06:13,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:13,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:13,127 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 06:06:13,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:13,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913552792] [2022-01-11 06:06:13,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913552792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:13,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:13,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:13,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136434483] [2022-01-11 06:06:13,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:13,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:13,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:13,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:13,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:13,130 INFO L87 Difference]: Start difference. First operand 2524 states and 3350 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:13,612 INFO L93 Difference]: Finished difference Result 7193 states and 9539 transitions. [2022-01-11 06:06:13,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:13,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:13,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:13,628 INFO L225 Difference]: With dead ends: 7193 [2022-01-11 06:06:13,628 INFO L226 Difference]: Without dead ends: 4723 [2022-01-11 06:06:13,634 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 06:06:13,634 INFO L933 BasicCegarLoop]: 1798 mSDtfsCounter, 1617 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:13,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1617 Valid, 3403 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:13,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4723 states. [2022-01-11 06:06:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4723 to 4715. [2022-01-11 06:06:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4715 states, 4713 states have (on average 1.3216634839804795) internal successors, (6229), 4714 states have internal predecessors, (6229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4715 states to 4715 states and 6229 transitions. [2022-01-11 06:06:14,049 INFO L78 Accepts]: Start accepts. Automaton has 4715 states and 6229 transitions. Word has length 142 [2022-01-11 06:06:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:14,049 INFO L470 AbstractCegarLoop]: Abstraction has 4715 states and 6229 transitions. [2022-01-11 06:06:14,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4715 states and 6229 transitions. [2022-01-11 06:06:14,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:14,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:14,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:14,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 06:06:14,051 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:14,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:14,052 INFO L85 PathProgramCache]: Analyzing trace with hash -467007551, now seen corresponding path program 1 times [2022-01-11 06:06:14,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:14,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508077926] [2022-01-11 06:06:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:14,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:14,126 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 06:06:14,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:14,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508077926] [2022-01-11 06:06:14,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508077926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:14,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:14,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:06:14,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245363533] [2022-01-11 06:06:14,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:14,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:06:14,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:14,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:06:14,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:06:14,129 INFO L87 Difference]: Start difference. First operand 4715 states and 6229 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 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 06:06:14,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:14,833 INFO L93 Difference]: Finished difference Result 12570 states and 16690 transitions. [2022-01-11 06:06:14,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:06:14,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 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 06:06:14,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:14,854 INFO L225 Difference]: With dead ends: 12570 [2022-01-11 06:06:14,854 INFO L226 Difference]: Without dead ends: 7941 [2022-01-11 06:06:14,862 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 06:06:14,863 INFO L933 BasicCegarLoop]: 1838 mSDtfsCounter, 4310 mSDsluCounter, 3651 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4310 SdHoareTripleChecker+Valid, 5489 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:14,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4310 Valid, 5489 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:06:14,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7941 states. [2022-01-11 06:06:15,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7941 to 4727. [2022-01-11 06:06:15,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4727 states, 4725 states have (on average 1.3113227513227512) internal successors, (6196), 4726 states have internal predecessors, (6196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:15,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4727 states to 4727 states and 6196 transitions. [2022-01-11 06:06:15,261 INFO L78 Accepts]: Start accepts. Automaton has 4727 states and 6196 transitions. Word has length 142 [2022-01-11 06:06:15,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:15,261 INFO L470 AbstractCegarLoop]: Abstraction has 4727 states and 6196 transitions. [2022-01-11 06:06:15,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 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 06:06:15,261 INFO L276 IsEmpty]: Start isEmpty. Operand 4727 states and 6196 transitions. [2022-01-11 06:06:15,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:15,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:15,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:15,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 06:06:15,263 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:15,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:15,263 INFO L85 PathProgramCache]: Analyzing trace with hash -675705854, now seen corresponding path program 1 times [2022-01-11 06:06:15,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:15,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783645589] [2022-01-11 06:06:15,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:15,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:15,331 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 06:06:15,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:15,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783645589] [2022-01-11 06:06:15,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783645589] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:15,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:15,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:15,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779224056] [2022-01-11 06:06:15,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:15,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:15,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:15,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:15,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:15,332 INFO L87 Difference]: Start difference. First operand 4727 states and 6196 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:15,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:15,924 INFO L93 Difference]: Finished difference Result 13567 states and 17768 transitions. [2022-01-11 06:06:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:15,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:15,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:15,947 INFO L225 Difference]: With dead ends: 13567 [2022-01-11 06:06:15,948 INFO L226 Difference]: Without dead ends: 8949 [2022-01-11 06:06:15,960 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 06:06:15,961 INFO L933 BasicCegarLoop]: 1782 mSDtfsCounter, 1554 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:15,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1554 Valid, 3375 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:15,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8949 states. [2022-01-11 06:06:16,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8949 to 8937. [2022-01-11 06:06:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8937 states, 8935 states have (on average 1.3043088975937325) internal successors, (11654), 8936 states have internal predecessors, (11654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:16,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8937 states to 8937 states and 11654 transitions. [2022-01-11 06:06:16,626 INFO L78 Accepts]: Start accepts. Automaton has 8937 states and 11654 transitions. Word has length 142 [2022-01-11 06:06:16,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:16,627 INFO L470 AbstractCegarLoop]: Abstraction has 8937 states and 11654 transitions. [2022-01-11 06:06:16,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:16,627 INFO L276 IsEmpty]: Start isEmpty. Operand 8937 states and 11654 transitions. [2022-01-11 06:06:16,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:16,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:16,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:16,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 06:06:16,628 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:16,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:16,629 INFO L85 PathProgramCache]: Analyzing trace with hash -876255999, now seen corresponding path program 1 times [2022-01-11 06:06:16,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:16,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382711170] [2022-01-11 06:06:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:16,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:16,679 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 06:06:16,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:16,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382711170] [2022-01-11 06:06:16,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382711170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:16,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:16,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:16,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15261384] [2022-01-11 06:06:16,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:16,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:16,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:16,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:16,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:16,681 INFO L87 Difference]: Start difference. First operand 8937 states and 11654 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:17,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:17,274 INFO L93 Difference]: Finished difference Result 17852 states and 23274 transitions. [2022-01-11 06:06:17,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:17,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:17,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:17,295 INFO L225 Difference]: With dead ends: 17852 [2022-01-11 06:06:17,296 INFO L226 Difference]: Without dead ends: 8937 [2022-01-11 06:06:17,310 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 06:06:17,311 INFO L933 BasicCegarLoop]: 1786 mSDtfsCounter, 1681 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 1786 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 06:06:17,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1681 Valid, 1786 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:17,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8937 states. [2022-01-11 06:06:17,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8937 to 8937. [2022-01-11 06:06:17,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8937 states, 8935 states have (on average 1.3013989927252378) internal successors, (11628), 8936 states have internal predecessors, (11628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8937 states to 8937 states and 11628 transitions. [2022-01-11 06:06:17,866 INFO L78 Accepts]: Start accepts. Automaton has 8937 states and 11628 transitions. Word has length 142 [2022-01-11 06:06:17,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:17,866 INFO L470 AbstractCegarLoop]: Abstraction has 8937 states and 11628 transitions. [2022-01-11 06:06:17,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:17,866 INFO L276 IsEmpty]: Start isEmpty. Operand 8937 states and 11628 transitions. [2022-01-11 06:06:17,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:17,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:17,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:17,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 06:06:17,868 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:17,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:17,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1408607456, now seen corresponding path program 1 times [2022-01-11 06:06:17,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:17,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901734652] [2022-01-11 06:06:17,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:17,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:17,921 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 06:06:17,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:17,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901734652] [2022-01-11 06:06:17,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901734652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:17,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:17,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:17,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897139251] [2022-01-11 06:06:17,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:17,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:17,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:17,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:17,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:17,923 INFO L87 Difference]: Start difference. First operand 8937 states and 11628 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:18,480 INFO L93 Difference]: Finished difference Result 17844 states and 23214 transitions. [2022-01-11 06:06:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:18,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:18,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:18,504 INFO L225 Difference]: With dead ends: 17844 [2022-01-11 06:06:18,505 INFO L226 Difference]: Without dead ends: 8937 [2022-01-11 06:06:18,519 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 06:06:18,520 INFO L933 BasicCegarLoop]: 1757 mSDtfsCounter, 1555 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:18,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 1854 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8937 states. [2022-01-11 06:06:19,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8937 to 8937. [2022-01-11 06:06:19,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8937 states, 8935 states have (on average 1.293564633463906) internal successors, (11558), 8936 states have internal predecessors, (11558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8937 states to 8937 states and 11558 transitions. [2022-01-11 06:06:19,208 INFO L78 Accepts]: Start accepts. Automaton has 8937 states and 11558 transitions. Word has length 142 [2022-01-11 06:06:19,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:19,208 INFO L470 AbstractCegarLoop]: Abstraction has 8937 states and 11558 transitions. [2022-01-11 06:06:19,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:19,209 INFO L276 IsEmpty]: Start isEmpty. Operand 8937 states and 11558 transitions. [2022-01-11 06:06:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:19,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:19,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:19,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 06:06:19,210 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:19,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:19,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1341600703, now seen corresponding path program 1 times [2022-01-11 06:06:19,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:19,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005072815] [2022-01-11 06:06:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:19,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:19,270 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 06:06:19,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:19,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005072815] [2022-01-11 06:06:19,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005072815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:19,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:19,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:19,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640211141] [2022-01-11 06:06:19,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:19,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:19,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:19,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:19,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:19,273 INFO L87 Difference]: Start difference. First operand 8937 states and 11558 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:19,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:19,916 INFO L93 Difference]: Finished difference Result 17836 states and 23066 transitions. [2022-01-11 06:06:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:19,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:19,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:19,932 INFO L225 Difference]: With dead ends: 17836 [2022-01-11 06:06:19,933 INFO L226 Difference]: Without dead ends: 8937 [2022-01-11 06:06:19,945 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 06:06:19,946 INFO L933 BasicCegarLoop]: 1740 mSDtfsCounter, 1531 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:19,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1531 Valid, 1836 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8937 states. [2022-01-11 06:06:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8937 to 8937. [2022-01-11 06:06:20,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8937 states, 8935 states have (on average 1.2857302742025742) internal successors, (11488), 8936 states have internal predecessors, (11488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:20,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8937 states to 8937 states and 11488 transitions. [2022-01-11 06:06:20,533 INFO L78 Accepts]: Start accepts. Automaton has 8937 states and 11488 transitions. Word has length 142 [2022-01-11 06:06:20,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:20,533 INFO L470 AbstractCegarLoop]: Abstraction has 8937 states and 11488 transitions. [2022-01-11 06:06:20,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:20,534 INFO L276 IsEmpty]: Start isEmpty. Operand 8937 states and 11488 transitions. [2022-01-11 06:06:20,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 06:06:20,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:20,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:20,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 06:06:20,535 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:20,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:20,535 INFO L85 PathProgramCache]: Analyzing trace with hash 831066526, now seen corresponding path program 1 times [2022-01-11 06:06:20,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:20,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81180169] [2022-01-11 06:06:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:20,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:20,609 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 06:06:20,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:20,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81180169] [2022-01-11 06:06:20,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81180169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:20,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:20,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:20,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301381196] [2022-01-11 06:06:20,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:20,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:20,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:20,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:20,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:20,611 INFO L87 Difference]: Start difference. First operand 8937 states and 11488 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:21,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:21,604 INFO L93 Difference]: Finished difference Result 26473 states and 34027 transitions. [2022-01-11 06:06:21,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:21,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:21,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:21,631 INFO L225 Difference]: With dead ends: 26473 [2022-01-11 06:06:21,631 INFO L226 Difference]: Without dead ends: 17576 [2022-01-11 06:06:21,643 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 06:06:21,644 INFO L933 BasicCegarLoop]: 1740 mSDtfsCounter, 1571 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 3300 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:21,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 3300 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:21,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17576 states. [2022-01-11 06:06:22,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17576 to 16952. [2022-01-11 06:06:22,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16952 states, 16950 states have (on average 1.280589970501475) internal successors, (21706), 16951 states have internal predecessors, (21706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:22,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16952 states to 16952 states and 21706 transitions. [2022-01-11 06:06:22,634 INFO L78 Accepts]: Start accepts. Automaton has 16952 states and 21706 transitions. Word has length 142 [2022-01-11 06:06:22,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:22,635 INFO L470 AbstractCegarLoop]: Abstraction has 16952 states and 21706 transitions. [2022-01-11 06:06:22,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 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 06:06:22,635 INFO L276 IsEmpty]: Start isEmpty. Operand 16952 states and 21706 transitions. [2022-01-11 06:06:22,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-01-11 06:06:22,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:22,646 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:22,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 06:06:22,646 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:22,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:22,647 INFO L85 PathProgramCache]: Analyzing trace with hash -758390146, now seen corresponding path program 1 times [2022-01-11 06:06:22,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:22,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113458059] [2022-01-11 06:06:22,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:22,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:22,729 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 06:06:22,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:22,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113458059] [2022-01-11 06:06:22,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113458059] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:22,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:22,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:06:22,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761520854] [2022-01-11 06:06:22,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:22,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:22,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:22,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:22,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:22,736 INFO L87 Difference]: Start difference. First operand 16952 states and 21706 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:24,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:24,820 INFO L93 Difference]: Finished difference Result 50321 states and 64486 transitions. [2022-01-11 06:06:24,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:24,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2022-01-11 06:06:24,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:24,870 INFO L225 Difference]: With dead ends: 50321 [2022-01-11 06:06:24,871 INFO L226 Difference]: Without dead ends: 33415 [2022-01-11 06:06:24,898 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 06:06:24,898 INFO L933 BasicCegarLoop]: 1737 mSDtfsCounter, 1608 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 3297 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:24,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 3297 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:06:24,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33415 states. [2022-01-11 06:06:26,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33415 to 32291. [2022-01-11 06:06:26,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32291 states, 32289 states have (on average 1.2783300814518876) internal successors, (41276), 32290 states have internal predecessors, (41276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32291 states to 32291 states and 41276 transitions. [2022-01-11 06:06:26,912 INFO L78 Accepts]: Start accepts. Automaton has 32291 states and 41276 transitions. Word has length 231 [2022-01-11 06:06:26,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:26,912 INFO L470 AbstractCegarLoop]: Abstraction has 32291 states and 41276 transitions. [2022-01-11 06:06:26,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:26,913 INFO L276 IsEmpty]: Start isEmpty. Operand 32291 states and 41276 transitions. [2022-01-11 06:06:26,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-01-11 06:06:26,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:26,930 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:26,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 06:06:26,930 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:26,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:26,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1203132990, now seen corresponding path program 1 times [2022-01-11 06:06:26,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:26,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717287743] [2022-01-11 06:06:26,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:26,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:27,006 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 06:06:27,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:27,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717287743] [2022-01-11 06:06:27,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717287743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:27,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:27,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:06:27,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064505246] [2022-01-11 06:06:27,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:27,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:27,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:27,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:27,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:27,010 INFO L87 Difference]: Start difference. First operand 32291 states and 41276 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:30,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:30,829 INFO L93 Difference]: Finished difference Result 94484 states and 120162 transitions. [2022-01-11 06:06:30,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:30,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2022-01-11 06:06:30,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:30,937 INFO L225 Difference]: With dead ends: 94484 [2022-01-11 06:06:30,937 INFO L226 Difference]: Without dead ends: 62328 [2022-01-11 06:06:30,973 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 06:06:30,974 INFO L933 BasicCegarLoop]: 2792 mSDtfsCounter, 1380 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 4525 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 06:06:30,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 4525 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62328 states. [2022-01-11 06:06:34,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62328 to 62324. [2022-01-11 06:06:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62324 states, 62322 states have (on average 1.2662944064696255) internal successors, (78918), 62323 states have internal predecessors, (78918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62324 states to 62324 states and 78918 transitions. [2022-01-11 06:06:35,114 INFO L78 Accepts]: Start accepts. Automaton has 62324 states and 78918 transitions. Word has length 231 [2022-01-11 06:06:35,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:35,114 INFO L470 AbstractCegarLoop]: Abstraction has 62324 states and 78918 transitions. [2022-01-11 06:06:35,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 62324 states and 78918 transitions. [2022-01-11 06:06:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-01-11 06:06:35,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:35,151 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:35,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 06:06:35,151 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1648670301, now seen corresponding path program 1 times [2022-01-11 06:06:35,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:35,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532263759] [2022-01-11 06:06:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:35,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:35,195 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 06:06:35,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:35,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532263759] [2022-01-11 06:06:35,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532263759] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:35,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:35,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:06:35,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915780008] [2022-01-11 06:06:35,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:35,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:35,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:35,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:35,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:35,197 INFO L87 Difference]: Start difference. First operand 62324 states and 78918 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:39,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:39,501 INFO L93 Difference]: Finished difference Result 124384 states and 157520 transitions. [2022-01-11 06:06:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:39,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2022-01-11 06:06:39,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:39,641 INFO L225 Difference]: With dead ends: 124384 [2022-01-11 06:06:39,642 INFO L226 Difference]: Without dead ends: 62195 [2022-01-11 06:06:39,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:39,711 INFO L933 BasicCegarLoop]: 1751 mSDtfsCounter, 1747 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 1751 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 06:06:39,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 1751 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:39,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62195 states. [2022-01-11 06:06:43,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62195 to 62195. [2022-01-11 06:06:44,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62195 states, 62193 states have (on average 1.2664286977634138) internal successors, (78763), 62194 states have internal predecessors, (78763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:44,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62195 states to 62195 states and 78763 transitions. [2022-01-11 06:06:44,151 INFO L78 Accepts]: Start accepts. Automaton has 62195 states and 78763 transitions. Word has length 231 [2022-01-11 06:06:44,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:44,151 INFO L470 AbstractCegarLoop]: Abstraction has 62195 states and 78763 transitions. [2022-01-11 06:06:44,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:44,152 INFO L276 IsEmpty]: Start isEmpty. Operand 62195 states and 78763 transitions. [2022-01-11 06:06:44,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-11 06:06:44,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:44,178 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:44,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 06:06:44,178 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:44,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:44,178 INFO L85 PathProgramCache]: Analyzing trace with hash -934744004, now seen corresponding path program 1 times [2022-01-11 06:06:44,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:44,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256195707] [2022-01-11 06:06:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:44,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:44,256 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 06:06:44,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:44,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256195707] [2022-01-11 06:06:44,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256195707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:44,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:44,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:06:44,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113765160] [2022-01-11 06:06:44,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:44,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:44,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:44,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:44,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:44,258 INFO L87 Difference]: Start difference. First operand 62195 states and 78763 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:51,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:51,984 INFO L93 Difference]: Finished difference Result 184843 states and 233495 transitions. [2022-01-11 06:06:51,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:51,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2022-01-11 06:06:51,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:52,256 INFO L225 Difference]: With dead ends: 184843 [2022-01-11 06:06:52,257 INFO L226 Difference]: Without dead ends: 122783 [2022-01-11 06:06:52,499 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 06:06:52,500 INFO L933 BasicCegarLoop]: 2109 mSDtfsCounter, 1597 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 3827 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:52,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1597 Valid, 3827 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:06:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122783 states.