/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.06.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 07:03:15,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 07:03:15,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 07:03:16,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 07:03:16,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 07:03:16,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 07:03:16,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 07:03:16,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 07:03:16,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 07:03:16,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 07:03:16,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 07:03:16,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 07:03:16,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 07:03:16,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 07:03:16,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 07:03:16,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 07:03:16,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 07:03:16,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 07:03:16,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 07:03:16,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 07:03:16,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 07:03:16,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 07:03:16,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 07:03:16,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 07:03:16,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 07:03:16,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 07:03:16,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 07:03:16,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 07:03:16,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 07:03:16,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 07:03:16,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 07:03:16,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 07:03:16,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 07:03:16,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 07:03:16,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 07:03:16,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 07:03:16,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 07:03:16,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 07:03:16,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 07:03:16,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 07:03:16,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 07:03:16,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 07:03:16,114 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 07:03:16,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 07:03:16,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 07:03:16,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 07:03:16,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 07:03:16,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 07:03:16,116 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 07:03:16,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 07:03:16,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 07:03:16,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 07:03:16,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 07:03:16,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 07:03:16,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 07:03:16,117 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 07:03:16,118 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 07:03:16,118 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 07:03:16,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 07:03:16,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 07:03:16,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 07:03:16,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 07:03:16,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 07:03:16,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:03:16,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 07:03:16,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 07:03:16,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 07:03:16,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 07:03:16,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 07:03:16,120 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 07:03:16,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 07:03:16,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 07:03:16,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 07:03:16,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 07:03:16,123 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 07:03:16,123 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 07:03:16,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 07:03:16,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 07:03:16,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 07:03:16,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 07:03:16,389 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 07:03:16,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.06.cil-2.c [2022-01-11 07:03:16,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47cc5ec81/686062e94a4841cc9b96e5d54d1b41da/FLAG3b33821b9 [2022-01-11 07:03:17,316 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 07:03:17,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.06.cil-2.c [2022-01-11 07:03:17,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47cc5ec81/686062e94a4841cc9b96e5d54d1b41da/FLAG3b33821b9 [2022-01-11 07:03:17,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47cc5ec81/686062e94a4841cc9b96e5d54d1b41da [2022-01-11 07:03:17,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 07:03:17,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 07:03:17,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 07:03:17,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 07:03:17,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 07:03:17,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:03:17" (1/1) ... [2022-01-11 07:03:17,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@edfce54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:03:17, skipping insertion in model container [2022-01-11 07:03:17,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:03:17" (1/1) ... [2022-01-11 07:03:17,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 07:03:17,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 07:03:19,191 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.06.cil-2.c[378560,378573] [2022-01-11 07:03:19,217 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.06.cil-2.c[383339,383352] [2022-01-11 07:03:19,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:03:19,415 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 07:03:20,140 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.06.cil-2.c[378560,378573] [2022-01-11 07:03:20,155 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.06.cil-2.c[383339,383352] [2022-01-11 07:03:20,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:03:20,226 INFO L208 MainTranslator]: Completed translation [2022-01-11 07:03:20,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:03:20 WrapperNode [2022-01-11 07:03:20,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 07:03:20,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 07:03:20,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 07:03:20,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 07:03:20,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:03:20" (1/1) ... [2022-01-11 07:03:20,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:03:20" (1/1) ... [2022-01-11 07:03:20,716 INFO L137 Inliner]: procedures = 57, calls = 59, calls flagged for inlining = 54, calls inlined = 123, statements flattened = 13985 [2022-01-11 07:03:20,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 07:03:20,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 07:03:20,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 07:03:20,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 07:03:20,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:03:20" (1/1) ... [2022-01-11 07:03:20,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:03:20" (1/1) ... [2022-01-11 07:03:20,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:03:20" (1/1) ... [2022-01-11 07:03:20,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:03:20" (1/1) ... [2022-01-11 07:03:21,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:03:20" (1/1) ... [2022-01-11 07:03:21,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:03:20" (1/1) ... [2022-01-11 07:03:21,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:03:20" (1/1) ... [2022-01-11 07:03:21,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 07:03:21,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 07:03:21,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 07:03:21,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 07:03:21,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:03:20" (1/1) ... [2022-01-11 07:03:21,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:03:21,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 07:03:21,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 07:03:21,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 07:03:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 07:03:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 07:03:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 07:03:21,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 07:03:21,475 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 07:03:21,476 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 07:03:30,546 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 07:03:30,576 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 07:03:30,576 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-01-11 07:03:30,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:03:30 BoogieIcfgContainer [2022-01-11 07:03:30,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 07:03:30,580 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 07:03:30,580 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 07:03:30,581 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 07:03:30,583 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:03:30" (1/1) ... [2022-01-11 07:03:32,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:03:32 BasicIcfg [2022-01-11 07:03:32,176 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 07:03:32,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 07:03:32,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 07:03:32,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 07:03:32,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 07:03:17" (1/4) ... [2022-01-11 07:03:32,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbd47ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:03:32, skipping insertion in model container [2022-01-11 07:03:32,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:03:20" (2/4) ... [2022-01-11 07:03:32,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbd47ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:03:32, skipping insertion in model container [2022-01-11 07:03:32,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:03:30" (3/4) ... [2022-01-11 07:03:32,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbd47ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 07:03:32, skipping insertion in model container [2022-01-11 07:03:32,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:03:32" (4/4) ... [2022-01-11 07:03:32,183 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.06.cil-2.cTransformedIcfg [2022-01-11 07:03:32,187 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 07:03:32,187 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 07:03:32,244 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 07:03:32,249 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 07:03:32,249 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 07:03:32,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 2871 states, 2868 states have (on average 1.788702928870293) internal successors, (5130), 2870 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:32,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:32,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:32,318 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] [2022-01-11 07:03:32,320 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:32,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:32,324 INFO L85 PathProgramCache]: Analyzing trace with hash 58261984, now seen corresponding path program 1 times [2022-01-11 07:03:32,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:32,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413777228] [2022-01-11 07:03:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:32,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:32,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:32,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413777228] [2022-01-11 07:03:32,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413777228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:32,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:32,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:03:32,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369380965] [2022-01-11 07:03:32,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:32,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:32,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:32,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:32,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:32,650 INFO L87 Difference]: Start difference. First operand has 2871 states, 2868 states have (on average 1.788702928870293) internal successors, (5130), 2870 states have internal predecessors, (5130), 0 states have call successors, (0), 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 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:32,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:32,859 INFO L93 Difference]: Finished difference Result 6273 states and 11062 transitions. [2022-01-11 07:03:32,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:32,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:32,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:32,895 INFO L225 Difference]: With dead ends: 6273 [2022-01-11 07:03:32,895 INFO L226 Difference]: Without dead ends: 3345 [2022-01-11 07:03:32,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:32,910 INFO L933 BasicCegarLoop]: 5041 mSDtfsCounter, 4956 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4956 SdHoareTripleChecker+Valid, 5914 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:32,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4956 Valid, 5914 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:32,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2022-01-11 07:03:33,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3343. [2022-01-11 07:03:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7291230170607603) internal successors, (5777), 3342 states have internal predecessors, (5777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:33,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5777 transitions. [2022-01-11 07:03:33,086 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5777 transitions. Word has length 99 [2022-01-11 07:03:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:33,086 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5777 transitions. [2022-01-11 07:03:33,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:33,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5777 transitions. [2022-01-11 07:03:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:33,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:33,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:03:33,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 07:03:33,092 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:33,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:33,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1226458239, now seen corresponding path program 1 times [2022-01-11 07:03:33,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:33,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565143137] [2022-01-11 07:03:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:33,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:33,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:33,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565143137] [2022-01-11 07:03:33,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565143137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:33,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:33,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:03:33,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86122385] [2022-01-11 07:03:33,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:33,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:33,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:33,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:33,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:33,219 INFO L87 Difference]: Start difference. First operand 3343 states and 5777 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:33,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:33,484 INFO L93 Difference]: Finished difference Result 4551 states and 7574 transitions. [2022-01-11 07:03:33,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:33,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:33,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:33,499 INFO L225 Difference]: With dead ends: 4551 [2022-01-11 07:03:33,499 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 07:03:33,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:33,504 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 4959 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4959 SdHoareTripleChecker+Valid, 4968 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:33,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4959 Valid, 4968 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:33,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 07:03:33,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 07:03:33,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7267285243938941) internal successors, (5769), 3342 states have internal predecessors, (5769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5769 transitions. [2022-01-11 07:03:33,593 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5769 transitions. Word has length 99 [2022-01-11 07:03:33,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:33,594 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5769 transitions. [2022-01-11 07:03:33,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:33,595 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5769 transitions. [2022-01-11 07:03:33,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:33,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:33,600 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] [2022-01-11 07:03:33,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 07:03:33,606 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:33,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:33,606 INFO L85 PathProgramCache]: Analyzing trace with hash -237520545, now seen corresponding path program 1 times [2022-01-11 07:03:33,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:33,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649603693] [2022-01-11 07:03:33,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:33,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:33,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:33,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649603693] [2022-01-11 07:03:33,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649603693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:33,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:33,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:03:33,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541829874] [2022-01-11 07:03:33,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:33,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:33,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:33,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:33,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:33,699 INFO L87 Difference]: Start difference. First operand 3343 states and 5769 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:33,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:33,794 INFO L93 Difference]: Finished difference Result 4550 states and 7557 transitions. [2022-01-11 07:03:33,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:33,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:33,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:33,809 INFO L225 Difference]: With dead ends: 4550 [2022-01-11 07:03:33,809 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 07:03:33,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:33,817 INFO L933 BasicCegarLoop]: 4963 mSDtfsCounter, 4953 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4953 SdHoareTripleChecker+Valid, 4963 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:33,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4953 Valid, 4963 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:33,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 07:03:33,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 07:03:33,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.724334031727028) internal successors, (5761), 3342 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:33,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5761 transitions. [2022-01-11 07:03:33,921 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5761 transitions. Word has length 99 [2022-01-11 07:03:33,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:33,922 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5761 transitions. [2022-01-11 07:03:33,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:33,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5761 transitions. [2022-01-11 07:03:33,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:33,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:33,927 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] [2022-01-11 07:03:33,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 07:03:33,928 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:33,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:33,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1932011647, now seen corresponding path program 1 times [2022-01-11 07:03:33,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:33,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695862939] [2022-01-11 07:03:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:33,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:33,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:33,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695862939] [2022-01-11 07:03:33,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695862939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:33,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:33,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:03:33,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227217663] [2022-01-11 07:03:33,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:33,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:33,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:33,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:33,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:33,986 INFO L87 Difference]: Start difference. First operand 3343 states and 5761 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:34,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:34,079 INFO L93 Difference]: Finished difference Result 4549 states and 7540 transitions. [2022-01-11 07:03:34,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:34,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:34,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:34,092 INFO L225 Difference]: With dead ends: 4549 [2022-01-11 07:03:34,092 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 07:03:34,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:34,103 INFO L933 BasicCegarLoop]: 4958 mSDtfsCounter, 4947 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:34,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 4958 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:34,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 07:03:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 07:03:34,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7219395390601617) internal successors, (5753), 3342 states have internal predecessors, (5753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:34,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5753 transitions. [2022-01-11 07:03:34,198 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5753 transitions. Word has length 99 [2022-01-11 07:03:34,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:34,198 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5753 transitions. [2022-01-11 07:03:34,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5753 transitions. [2022-01-11 07:03:34,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:34,200 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:34,200 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] [2022-01-11 07:03:34,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 07:03:34,200 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:34,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:34,201 INFO L85 PathProgramCache]: Analyzing trace with hash 477975903, now seen corresponding path program 1 times [2022-01-11 07:03:34,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:34,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589407703] [2022-01-11 07:03:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:34,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:34,273 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 07:03:34,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:34,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589407703] [2022-01-11 07:03:34,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589407703] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:34,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:34,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:03:34,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245565792] [2022-01-11 07:03:34,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:34,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:34,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:34,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:34,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:34,276 INFO L87 Difference]: Start difference. First operand 3343 states and 5753 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:34,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:34,370 INFO L93 Difference]: Finished difference Result 4548 states and 7523 transitions. [2022-01-11 07:03:34,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:34,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:34,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:34,384 INFO L225 Difference]: With dead ends: 4548 [2022-01-11 07:03:34,384 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 07:03:34,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:34,388 INFO L933 BasicCegarLoop]: 4953 mSDtfsCounter, 4941 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4941 SdHoareTripleChecker+Valid, 4953 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:34,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4941 Valid, 4953 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:34,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 07:03:34,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 07:03:34,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7195450463932955) internal successors, (5745), 3342 states have internal predecessors, (5745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5745 transitions. [2022-01-11 07:03:34,515 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5745 transitions. Word has length 99 [2022-01-11 07:03:34,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:34,517 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5745 transitions. [2022-01-11 07:03:34,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5745 transitions. [2022-01-11 07:03:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:34,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:34,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:03:34,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 07:03:34,521 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:34,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:34,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1261354878, now seen corresponding path program 1 times [2022-01-11 07:03:34,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:34,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825078462] [2022-01-11 07:03:34,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:34,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:34,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:34,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:34,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825078462] [2022-01-11 07:03:34,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825078462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:34,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:34,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:03:34,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299393004] [2022-01-11 07:03:34,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:34,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:34,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:34,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:34,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:34,585 INFO L87 Difference]: Start difference. First operand 3343 states and 5745 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:34,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:34,672 INFO L93 Difference]: Finished difference Result 4547 states and 7506 transitions. [2022-01-11 07:03:34,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:34,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:34,684 INFO L225 Difference]: With dead ends: 4547 [2022-01-11 07:03:34,685 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 07:03:34,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:34,689 INFO L933 BasicCegarLoop]: 4948 mSDtfsCounter, 4935 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4935 SdHoareTripleChecker+Valid, 4948 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:34,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4935 Valid, 4948 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:34,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 07:03:34,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 07:03:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.717150553726429) internal successors, (5737), 3342 states have internal predecessors, (5737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5737 transitions. [2022-01-11 07:03:34,899 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5737 transitions. Word has length 99 [2022-01-11 07:03:34,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:34,899 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5737 transitions. [2022-01-11 07:03:34,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5737 transitions. [2022-01-11 07:03:34,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:34,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:34,900 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] [2022-01-11 07:03:34,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 07:03:34,900 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:34,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:34,901 INFO L85 PathProgramCache]: Analyzing trace with hash 665429086, now seen corresponding path program 1 times [2022-01-11 07:03:34,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:34,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486090717] [2022-01-11 07:03:34,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:34,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:34,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:34,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486090717] [2022-01-11 07:03:34,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486090717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:34,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:34,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:03:34,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671390591] [2022-01-11 07:03:34,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:34,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:34,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:34,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:34,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:34,953 INFO L87 Difference]: Start difference. First operand 3343 states and 5737 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:35,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:35,042 INFO L93 Difference]: Finished difference Result 4546 states and 7489 transitions. [2022-01-11 07:03:35,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:35,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:35,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:35,077 INFO L225 Difference]: With dead ends: 4546 [2022-01-11 07:03:35,077 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 07:03:35,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:35,082 INFO L933 BasicCegarLoop]: 4943 mSDtfsCounter, 4929 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4929 SdHoareTripleChecker+Valid, 4943 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:35,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4929 Valid, 4943 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:35,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 07:03:35,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 07:03:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.714756061059563) internal successors, (5729), 3342 states have internal predecessors, (5729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5729 transitions. [2022-01-11 07:03:35,182 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5729 transitions. Word has length 99 [2022-01-11 07:03:35,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:35,183 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5729 transitions. [2022-01-11 07:03:35,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:35,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5729 transitions. [2022-01-11 07:03:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:35,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:35,186 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] [2022-01-11 07:03:35,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 07:03:35,186 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:35,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:35,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1338942334, now seen corresponding path program 1 times [2022-01-11 07:03:35,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:35,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731546465] [2022-01-11 07:03:35,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:35,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:35,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:35,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:35,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731546465] [2022-01-11 07:03:35,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731546465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:35,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:35,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:03:35,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679742] [2022-01-11 07:03:35,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:35,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:35,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:35,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:35,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:35,247 INFO L87 Difference]: Start difference. First operand 3343 states and 5729 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:35,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:35,355 INFO L93 Difference]: Finished difference Result 4545 states and 7472 transitions. [2022-01-11 07:03:35,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:35,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:35,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:35,364 INFO L225 Difference]: With dead ends: 4545 [2022-01-11 07:03:35,364 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 07:03:35,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:35,367 INFO L933 BasicCegarLoop]: 4920 mSDtfsCounter, 4842 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4842 SdHoareTripleChecker+Valid, 4988 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:35,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4842 Valid, 4988 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:35,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 07:03:35,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 07:03:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7075725830589643) internal successors, (5705), 3342 states have internal predecessors, (5705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5705 transitions. [2022-01-11 07:03:35,464 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5705 transitions. Word has length 99 [2022-01-11 07:03:35,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:35,464 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5705 transitions. [2022-01-11 07:03:35,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:35,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5705 transitions. [2022-01-11 07:03:35,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:35,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:35,465 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] [2022-01-11 07:03:35,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 07:03:35,466 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:35,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:35,466 INFO L85 PathProgramCache]: Analyzing trace with hash 845788381, now seen corresponding path program 1 times [2022-01-11 07:03:35,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:35,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274784363] [2022-01-11 07:03:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:35,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:35,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:35,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274784363] [2022-01-11 07:03:35,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274784363] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:35,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:35,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:03:35,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199705937] [2022-01-11 07:03:35,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:35,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:35,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:35,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:35,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:35,515 INFO L87 Difference]: Start difference. First operand 3343 states and 5705 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:35,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:35,614 INFO L93 Difference]: Finished difference Result 4544 states and 7423 transitions. [2022-01-11 07:03:35,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:35,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:35,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:35,620 INFO L225 Difference]: With dead ends: 4544 [2022-01-11 07:03:35,620 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 07:03:35,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:35,625 INFO L933 BasicCegarLoop]: 4906 mSDtfsCounter, 4828 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4828 SdHoareTripleChecker+Valid, 4973 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:35,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4828 Valid, 4973 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:35,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 07:03:35,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 07:03:35,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7003891050583657) internal successors, (5681), 3342 states have internal predecessors, (5681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:35,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5681 transitions. [2022-01-11 07:03:35,715 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5681 transitions. Word has length 99 [2022-01-11 07:03:35,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:35,716 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5681 transitions. [2022-01-11 07:03:35,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:35,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5681 transitions. [2022-01-11 07:03:35,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:35,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:35,720 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] [2022-01-11 07:03:35,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 07:03:35,721 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:35,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1779661253, now seen corresponding path program 1 times [2022-01-11 07:03:35,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:35,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275097956] [2022-01-11 07:03:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:35,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:35,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:35,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275097956] [2022-01-11 07:03:35,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275097956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:35,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:35,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:03:35,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092996103] [2022-01-11 07:03:35,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:35,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:35,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:35,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:35,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:35,762 INFO L87 Difference]: Start difference. First operand 3343 states and 5681 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:35,870 INFO L93 Difference]: Finished difference Result 4543 states and 7374 transitions. [2022-01-11 07:03:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:35,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:35,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:35,878 INFO L225 Difference]: With dead ends: 4543 [2022-01-11 07:03:35,878 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 07:03:35,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:35,882 INFO L933 BasicCegarLoop]: 4892 mSDtfsCounter, 4814 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4814 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:35,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4814 Valid, 4958 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:35,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 07:03:35,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 07:03:35,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6932056270577671) internal successors, (5657), 3342 states have internal predecessors, (5657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5657 transitions. [2022-01-11 07:03:35,987 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5657 transitions. Word has length 99 [2022-01-11 07:03:35,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:35,987 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5657 transitions. [2022-01-11 07:03:35,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5657 transitions. [2022-01-11 07:03:35,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:35,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:35,989 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] [2022-01-11 07:03:35,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 07:03:35,989 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:35,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:35,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1460873702, now seen corresponding path program 1 times [2022-01-11 07:03:35,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:35,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003108406] [2022-01-11 07:03:35,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:35,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:36,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:36,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:36,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003108406] [2022-01-11 07:03:36,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003108406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:36,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:36,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:03:36,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800369778] [2022-01-11 07:03:36,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:36,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:36,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:36,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:36,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:36,032 INFO L87 Difference]: Start difference. First operand 3343 states and 5657 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:36,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:36,149 INFO L93 Difference]: Finished difference Result 4542 states and 7325 transitions. [2022-01-11 07:03:36,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:36,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:36,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:36,157 INFO L225 Difference]: With dead ends: 4542 [2022-01-11 07:03:36,157 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 07:03:36,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:36,161 INFO L933 BasicCegarLoop]: 4878 mSDtfsCounter, 4800 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4800 SdHoareTripleChecker+Valid, 4943 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:36,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4800 Valid, 4943 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:36,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 07:03:36,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 07:03:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6860221490571685) internal successors, (5633), 3342 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:36,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5633 transitions. [2022-01-11 07:03:36,274 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5633 transitions. Word has length 99 [2022-01-11 07:03:36,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:36,274 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5633 transitions. [2022-01-11 07:03:36,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:36,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5633 transitions. [2022-01-11 07:03:36,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:36,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:36,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:03:36,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 07:03:36,276 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1583723655, now seen corresponding path program 1 times [2022-01-11 07:03:36,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:36,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954323121] [2022-01-11 07:03:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:36,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:36,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:36,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954323121] [2022-01-11 07:03:36,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954323121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:36,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:36,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:03:36,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238420822] [2022-01-11 07:03:36,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:36,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:36,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:36,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:36,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:36,314 INFO L87 Difference]: Start difference. First operand 3343 states and 5633 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:36,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:36,436 INFO L93 Difference]: Finished difference Result 4541 states and 7276 transitions. [2022-01-11 07:03:36,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:36,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:36,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:36,445 INFO L225 Difference]: With dead ends: 4541 [2022-01-11 07:03:36,445 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 07:03:36,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:36,449 INFO L933 BasicCegarLoop]: 4864 mSDtfsCounter, 4786 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 4928 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:36,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4786 Valid, 4928 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:36,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 07:03:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 07:03:36,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.67883867105657) internal successors, (5609), 3342 states have internal predecessors, (5609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:36,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5609 transitions. [2022-01-11 07:03:36,562 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5609 transitions. Word has length 99 [2022-01-11 07:03:36,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:36,562 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5609 transitions. [2022-01-11 07:03:36,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:36,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5609 transitions. [2022-01-11 07:03:36,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:36,564 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:36,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:03:36,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 07:03:36,564 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:36,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:36,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2109498920, now seen corresponding path program 1 times [2022-01-11 07:03:36,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:36,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009014176] [2022-01-11 07:03:36,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:36,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:36,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:36,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009014176] [2022-01-11 07:03:36,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009014176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:36,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:36,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:03:36,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759932426] [2022-01-11 07:03:36,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:36,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:36,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:36,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:36,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:36,608 INFO L87 Difference]: Start difference. First operand 3343 states and 5609 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:36,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:36,733 INFO L93 Difference]: Finished difference Result 4540 states and 7227 transitions. [2022-01-11 07:03:36,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:36,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:36,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:36,741 INFO L225 Difference]: With dead ends: 4540 [2022-01-11 07:03:36,741 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 07:03:36,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:36,745 INFO L933 BasicCegarLoop]: 4850 mSDtfsCounter, 4772 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4772 SdHoareTripleChecker+Valid, 4913 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:36,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4772 Valid, 4913 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:36,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 07:03:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 07:03:36,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6716551930559713) internal successors, (5585), 3342 states have internal predecessors, (5585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5585 transitions. [2022-01-11 07:03:36,857 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5585 transitions. Word has length 99 [2022-01-11 07:03:36,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:36,858 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5585 transitions. [2022-01-11 07:03:36,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:36,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5585 transitions. [2022-01-11 07:03:36,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:36,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:36,860 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] [2022-01-11 07:03:36,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 07:03:36,860 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:36,861 INFO L85 PathProgramCache]: Analyzing trace with hash 674921911, now seen corresponding path program 1 times [2022-01-11 07:03:36,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:36,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873412160] [2022-01-11 07:03:36,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:36,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:36,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:36,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873412160] [2022-01-11 07:03:36,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873412160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:36,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:36,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:03:36,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395130438] [2022-01-11 07:03:36,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:36,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:36,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:36,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:36,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:36,902 INFO L87 Difference]: Start difference. First operand 3343 states and 5585 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:37,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:37,033 INFO L93 Difference]: Finished difference Result 4539 states and 7178 transitions. [2022-01-11 07:03:37,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:37,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:37,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:37,040 INFO L225 Difference]: With dead ends: 4539 [2022-01-11 07:03:37,040 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 07:03:37,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:37,043 INFO L933 BasicCegarLoop]: 4836 mSDtfsCounter, 4758 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 4898 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:37,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4758 Valid, 4898 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:37,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 07:03:37,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 07:03:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6644717150553727) internal successors, (5561), 3342 states have internal predecessors, (5561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5561 transitions. [2022-01-11 07:03:37,158 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5561 transitions. Word has length 99 [2022-01-11 07:03:37,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:37,158 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5561 transitions. [2022-01-11 07:03:37,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:37,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5561 transitions. [2022-01-11 07:03:37,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:37,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:37,160 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] [2022-01-11 07:03:37,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 07:03:37,160 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:37,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1309635946, now seen corresponding path program 1 times [2022-01-11 07:03:37,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:37,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695341611] [2022-01-11 07:03:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:37,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:37,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:37,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:37,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695341611] [2022-01-11 07:03:37,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695341611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:37,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:37,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:03:37,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514738045] [2022-01-11 07:03:37,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:37,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:03:37,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:37,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:03:37,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:03:37,225 INFO L87 Difference]: Start difference. First operand 3343 states and 5561 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:37,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:37,501 INFO L93 Difference]: Finished difference Result 5135 states and 7947 transitions. [2022-01-11 07:03:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:03:37,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:37,509 INFO L225 Difference]: With dead ends: 5135 [2022-01-11 07:03:37,509 INFO L226 Difference]: Without dead ends: 3953 [2022-01-11 07:03:37,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:03:37,514 INFO L933 BasicCegarLoop]: 4910 mSDtfsCounter, 2369 mSDsluCounter, 13177 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2369 SdHoareTripleChecker+Valid, 18087 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:37,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2369 Valid, 18087 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:03:37,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2022-01-11 07:03:37,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 3349. [2022-01-11 07:03:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3347 states have (on average 1.6585001493875111) internal successors, (5551), 3348 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:37,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 5551 transitions. [2022-01-11 07:03:37,629 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 5551 transitions. Word has length 99 [2022-01-11 07:03:37,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:37,629 INFO L470 AbstractCegarLoop]: Abstraction has 3349 states and 5551 transitions. [2022-01-11 07:03:37,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:37,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 5551 transitions. [2022-01-11 07:03:37,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:37,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:37,631 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] [2022-01-11 07:03:37,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 07:03:37,631 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:37,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:37,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1818635031, now seen corresponding path program 1 times [2022-01-11 07:03:37,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:37,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914322579] [2022-01-11 07:03:37,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:37,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:37,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:37,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914322579] [2022-01-11 07:03:37,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914322579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:37,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:37,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:03:37,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076939973] [2022-01-11 07:03:37,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:37,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:03:37,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:37,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:03:37,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:03:37,688 INFO L87 Difference]: Start difference. First operand 3349 states and 5551 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:37,974 INFO L93 Difference]: Finished difference Result 5534 states and 8421 transitions. [2022-01-11 07:03:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:03:37,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:37,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:37,984 INFO L225 Difference]: With dead ends: 5534 [2022-01-11 07:03:37,984 INFO L226 Difference]: Without dead ends: 4381 [2022-01-11 07:03:37,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:03:37,988 INFO L933 BasicCegarLoop]: 4809 mSDtfsCounter, 1808 mSDsluCounter, 14197 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 19006 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:37,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1808 Valid, 19006 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:03:37,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2022-01-11 07:03:38,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 3355. [2022-01-11 07:03:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3355 states, 3353 states have (on average 1.6525499552639427) internal successors, (5541), 3354 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:38,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3355 states to 3355 states and 5541 transitions. [2022-01-11 07:03:38,115 INFO L78 Accepts]: Start accepts. Automaton has 3355 states and 5541 transitions. Word has length 99 [2022-01-11 07:03:38,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:38,115 INFO L470 AbstractCegarLoop]: Abstraction has 3355 states and 5541 transitions. [2022-01-11 07:03:38,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:38,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3355 states and 5541 transitions. [2022-01-11 07:03:38,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 07:03:38,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:38,117 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] [2022-01-11 07:03:38,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 07:03:38,117 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:38,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:38,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2125532328, now seen corresponding path program 1 times [2022-01-11 07:03:38,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:38,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649534918] [2022-01-11 07:03:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:38,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:38,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:38,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649534918] [2022-01-11 07:03:38,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649534918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:38,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:38,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:03:38,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168829737] [2022-01-11 07:03:38,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:38,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:38,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:38,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:38,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:38,162 INFO L87 Difference]: Start difference. First operand 3355 states and 5541 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:38,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:38,412 INFO L93 Difference]: Finished difference Result 5678 states and 8530 transitions. [2022-01-11 07:03:38,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:38,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 07:03:38,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:38,421 INFO L225 Difference]: With dead ends: 5678 [2022-01-11 07:03:38,421 INFO L226 Difference]: Without dead ends: 4472 [2022-01-11 07:03:38,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:38,424 INFO L933 BasicCegarLoop]: 4819 mSDtfsCounter, 4708 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 5560 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:38,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4708 Valid, 5560 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:38,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2022-01-11 07:03:38,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 4370. [2022-01-11 07:03:38,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4368 states have (on average 1.5647893772893773) internal successors, (6835), 4369 states have internal predecessors, (6835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:38,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 6835 transitions. [2022-01-11 07:03:38,627 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 6835 transitions. Word has length 99 [2022-01-11 07:03:38,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:38,628 INFO L470 AbstractCegarLoop]: Abstraction has 4370 states and 6835 transitions. [2022-01-11 07:03:38,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:38,628 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 6835 transitions. [2022-01-11 07:03:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 07:03:38,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:38,631 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] [2022-01-11 07:03:38,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 07:03:38,631 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:38,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:38,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1987499719, now seen corresponding path program 1 times [2022-01-11 07:03:38,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:38,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426814804] [2022-01-11 07:03:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:38,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:38,686 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:38,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:38,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426814804] [2022-01-11 07:03:38,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426814804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:38,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:38,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:03:38,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390133543] [2022-01-11 07:03:38,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:38,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:38,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:38,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:38,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:38,688 INFO L87 Difference]: Start difference. First operand 4370 states and 6835 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:39,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:39,049 INFO L93 Difference]: Finished difference Result 8667 states and 12347 transitions. [2022-01-11 07:03:39,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:39,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-11 07:03:39,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:39,065 INFO L225 Difference]: With dead ends: 8667 [2022-01-11 07:03:39,066 INFO L226 Difference]: Without dead ends: 6452 [2022-01-11 07:03:39,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:39,073 INFO L933 BasicCegarLoop]: 4816 mSDtfsCounter, 4723 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 5557 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:39,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4723 Valid, 5557 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:39,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6452 states. [2022-01-11 07:03:39,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6452 to 6278. [2022-01-11 07:03:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6278 states, 6276 states have (on average 1.4765774378585086) internal successors, (9267), 6277 states have internal predecessors, (9267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:39,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 9267 transitions. [2022-01-11 07:03:39,355 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 9267 transitions. Word has length 160 [2022-01-11 07:03:39,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:39,355 INFO L470 AbstractCegarLoop]: Abstraction has 6278 states and 9267 transitions. [2022-01-11 07:03:39,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:39,355 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 9267 transitions. [2022-01-11 07:03:39,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 07:03:39,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:39,359 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] [2022-01-11 07:03:39,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 07:03:39,360 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:39,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:39,360 INFO L85 PathProgramCache]: Analyzing trace with hash 188793081, now seen corresponding path program 1 times [2022-01-11 07:03:39,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:39,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950260000] [2022-01-11 07:03:39,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:39,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:39,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:39,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950260000] [2022-01-11 07:03:39,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950260000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:39,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:39,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:03:39,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865423559] [2022-01-11 07:03:39,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:39,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:39,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:39,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:39,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:39,418 INFO L87 Difference]: Start difference. First operand 6278 states and 9267 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:39,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:39,968 INFO L93 Difference]: Finished difference Result 14139 states and 19223 transitions. [2022-01-11 07:03:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:39,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-11 07:03:39,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:39,994 INFO L225 Difference]: With dead ends: 14139 [2022-01-11 07:03:39,994 INFO L226 Difference]: Without dead ends: 10071 [2022-01-11 07:03:40,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:40,002 INFO L933 BasicCegarLoop]: 5220 mSDtfsCounter, 4583 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4583 SdHoareTripleChecker+Valid, 6070 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:40,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4583 Valid, 6070 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:40,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10071 states. [2022-01-11 07:03:40,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10071 to 10069. [2022-01-11 07:03:40,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10069 states, 10067 states have (on average 1.3893910797655706) internal successors, (13987), 10068 states have internal predecessors, (13987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10069 states to 10069 states and 13987 transitions. [2022-01-11 07:03:40,553 INFO L78 Accepts]: Start accepts. Automaton has 10069 states and 13987 transitions. Word has length 160 [2022-01-11 07:03:40,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:40,554 INFO L470 AbstractCegarLoop]: Abstraction has 10069 states and 13987 transitions. [2022-01-11 07:03:40,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:40,554 INFO L276 IsEmpty]: Start isEmpty. Operand 10069 states and 13987 transitions. [2022-01-11 07:03:40,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 07:03:40,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:40,560 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] [2022-01-11 07:03:40,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 07:03:40,561 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:40,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash -116841448, now seen corresponding path program 1 times [2022-01-11 07:03:40,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:40,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026297319] [2022-01-11 07:03:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:40,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:03:40,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:40,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026297319] [2022-01-11 07:03:40,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026297319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:40,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:40,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:03:40,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421929326] [2022-01-11 07:03:40,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:40,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:40,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:40,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:40,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:40,602 INFO L87 Difference]: Start difference. First operand 10069 states and 13987 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:41,091 INFO L93 Difference]: Finished difference Result 17845 states and 23812 transitions. [2022-01-11 07:03:41,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:41,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-11 07:03:41,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:41,115 INFO L225 Difference]: With dead ends: 17845 [2022-01-11 07:03:41,115 INFO L226 Difference]: Without dead ends: 9986 [2022-01-11 07:03:41,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:41,130 INFO L933 BasicCegarLoop]: 4826 mSDtfsCounter, 864 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 8784 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:41,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 8784 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:41,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2022-01-11 07:03:41,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9986. [2022-01-11 07:03:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 9984 states have (on average 1.391025641025641) internal successors, (13888), 9985 states have internal predecessors, (13888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 13888 transitions. [2022-01-11 07:03:41,653 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 13888 transitions. Word has length 160 [2022-01-11 07:03:41,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:41,653 INFO L470 AbstractCegarLoop]: Abstraction has 9986 states and 13888 transitions. [2022-01-11 07:03:41,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:41,653 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 13888 transitions. [2022-01-11 07:03:41,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-11 07:03:41,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:41,659 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] [2022-01-11 07:03:41,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 07:03:41,659 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:41,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:41,660 INFO L85 PathProgramCache]: Analyzing trace with hash 886799409, now seen corresponding path program 1 times [2022-01-11 07:03:41,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:41,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258458326] [2022-01-11 07:03:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:41,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:41,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:41,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258458326] [2022-01-11 07:03:41,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258458326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:41,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:41,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:03:41,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931008795] [2022-01-11 07:03:41,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:41,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:41,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:41,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:41,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:41,711 INFO L87 Difference]: Start difference. First operand 9986 states and 13888 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:42,417 INFO L93 Difference]: Finished difference Result 25140 states and 32946 transitions. [2022-01-11 07:03:42,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:42,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-01-11 07:03:42,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:42,463 INFO L225 Difference]: With dead ends: 25140 [2022-01-11 07:03:42,464 INFO L226 Difference]: Without dead ends: 17364 [2022-01-11 07:03:42,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:42,481 INFO L933 BasicCegarLoop]: 5019 mSDtfsCounter, 4724 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 5858 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:42,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4724 Valid, 5858 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17364 states. [2022-01-11 07:03:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17364 to 16850. [2022-01-11 07:03:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16850 states, 16848 states have (on average 1.331908831908832) internal successors, (22440), 16849 states have internal predecessors, (22440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:43,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16850 states to 16850 states and 22440 transitions. [2022-01-11 07:03:43,234 INFO L78 Accepts]: Start accepts. Automaton has 16850 states and 22440 transitions. Word has length 161 [2022-01-11 07:03:43,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:43,234 INFO L470 AbstractCegarLoop]: Abstraction has 16850 states and 22440 transitions. [2022-01-11 07:03:43,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:43,235 INFO L276 IsEmpty]: Start isEmpty. Operand 16850 states and 22440 transitions. [2022-01-11 07:03:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-11 07:03:43,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:43,243 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] [2022-01-11 07:03:43,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 07:03:43,244 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:43,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:43,244 INFO L85 PathProgramCache]: Analyzing trace with hash -456380654, now seen corresponding path program 1 times [2022-01-11 07:03:43,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:43,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561873297] [2022-01-11 07:03:43,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:43,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:03:43,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:43,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561873297] [2022-01-11 07:03:43,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561873297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:43,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:43,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:03:43,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572054681] [2022-01-11 07:03:43,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:43,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:43,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:43,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:43,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:43,277 INFO L87 Difference]: Start difference. First operand 16850 states and 22440 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:43,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:43,980 INFO L93 Difference]: Finished difference Result 31452 states and 40772 transitions. [2022-01-11 07:03:43,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:43,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 161 [2022-01-11 07:03:43,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:44,020 INFO L225 Difference]: With dead ends: 31452 [2022-01-11 07:03:44,020 INFO L226 Difference]: Without dead ends: 16768 [2022-01-11 07:03:44,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:44,047 INFO L933 BasicCegarLoop]: 4825 mSDtfsCounter, 862 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 8783 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:44,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 8783 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:44,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16768 states. [2022-01-11 07:03:44,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16768 to 16768. [2022-01-11 07:03:44,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16768 states, 16766 states have (on average 1.3326374806155314) internal successors, (22343), 16767 states have internal predecessors, (22343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16768 states to 16768 states and 22343 transitions. [2022-01-11 07:03:44,975 INFO L78 Accepts]: Start accepts. Automaton has 16768 states and 22343 transitions. Word has length 161 [2022-01-11 07:03:44,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:44,975 INFO L470 AbstractCegarLoop]: Abstraction has 16768 states and 22343 transitions. [2022-01-11 07:03:44,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:44,975 INFO L276 IsEmpty]: Start isEmpty. Operand 16768 states and 22343 transitions. [2022-01-11 07:03:44,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-11 07:03:44,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:44,983 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] [2022-01-11 07:03:44,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 07:03:44,983 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:44,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:44,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1966576152, now seen corresponding path program 1 times [2022-01-11 07:03:44,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:44,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462118534] [2022-01-11 07:03:44,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:44,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:45,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:45,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462118534] [2022-01-11 07:03:45,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462118534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:45,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:45,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:03:45,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800709070] [2022-01-11 07:03:45,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:45,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:45,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:45,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:45,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:45,042 INFO L87 Difference]: Start difference. First operand 16768 states and 22343 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:46,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:46,312 INFO L93 Difference]: Finished difference Result 44901 states and 57575 transitions. [2022-01-11 07:03:46,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:46,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2022-01-11 07:03:46,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:46,373 INFO L225 Difference]: With dead ends: 44901 [2022-01-11 07:03:46,373 INFO L226 Difference]: Without dead ends: 30343 [2022-01-11 07:03:46,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:46,395 INFO L933 BasicCegarLoop]: 5020 mSDtfsCounter, 4724 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 5857 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:46,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4724 Valid, 5857 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:46,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30343 states. [2022-01-11 07:03:47,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30343 to 29541. [2022-01-11 07:03:47,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29541 states, 29539 states have (on average 1.2947290023358948) internal successors, (38245), 29540 states have internal predecessors, (38245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:47,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29541 states to 29541 states and 38245 transitions. [2022-01-11 07:03:47,840 INFO L78 Accepts]: Start accepts. Automaton has 29541 states and 38245 transitions. Word has length 162 [2022-01-11 07:03:47,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:47,840 INFO L470 AbstractCegarLoop]: Abstraction has 29541 states and 38245 transitions. [2022-01-11 07:03:47,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:47,840 INFO L276 IsEmpty]: Start isEmpty. Operand 29541 states and 38245 transitions. [2022-01-11 07:03:47,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-11 07:03:47,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:47,854 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] [2022-01-11 07:03:47,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 07:03:47,855 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:47,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1912459259, now seen corresponding path program 1 times [2022-01-11 07:03:47,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:47,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645847505] [2022-01-11 07:03:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:47,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:47,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:03:47,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:47,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645847505] [2022-01-11 07:03:47,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645847505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:47,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:47,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:03:47,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640398416] [2022-01-11 07:03:47,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:47,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:47,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:47,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:47,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:47,889 INFO L87 Difference]: Start difference. First operand 29541 states and 38245 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:49,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:49,304 INFO L93 Difference]: Finished difference Result 56828 states and 72376 transitions. [2022-01-11 07:03:49,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:49,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 162 [2022-01-11 07:03:49,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:49,349 INFO L225 Difference]: With dead ends: 56828 [2022-01-11 07:03:49,349 INFO L226 Difference]: Without dead ends: 29460 [2022-01-11 07:03:49,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:49,383 INFO L933 BasicCegarLoop]: 4824 mSDtfsCounter, 860 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 8782 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:49,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 8782 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29460 states. [2022-01-11 07:03:50,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29460 to 29460. [2022-01-11 07:03:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29460 states, 29458 states have (on average 1.295064159141829) internal successors, (38150), 29459 states have internal predecessors, (38150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29460 states to 29460 states and 38150 transitions. [2022-01-11 07:03:50,999 INFO L78 Accepts]: Start accepts. Automaton has 29460 states and 38150 transitions. Word has length 162 [2022-01-11 07:03:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:50,999 INFO L470 AbstractCegarLoop]: Abstraction has 29460 states and 38150 transitions. [2022-01-11 07:03:51,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:51,000 INFO L276 IsEmpty]: Start isEmpty. Operand 29460 states and 38150 transitions. [2022-01-11 07:03:51,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-11 07:03:51,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:51,014 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] [2022-01-11 07:03:51,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 07:03:51,014 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:51,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:51,015 INFO L85 PathProgramCache]: Analyzing trace with hash 40185600, now seen corresponding path program 1 times [2022-01-11 07:03:51,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:51,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496219690] [2022-01-11 07:03:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:51,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:51,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:03:51,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:51,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496219690] [2022-01-11 07:03:51,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496219690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:51,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:51,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:03:51,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698628988] [2022-01-11 07:03:51,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:51,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:51,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:51,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:51,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:51,104 INFO L87 Difference]: Start difference. First operand 29460 states and 38150 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:53,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:53,866 INFO L93 Difference]: Finished difference Result 81560 states and 103188 transitions. [2022-01-11 07:03:53,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:53,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2022-01-11 07:03:53,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:03:53,946 INFO L225 Difference]: With dead ends: 81560 [2022-01-11 07:03:53,946 INFO L226 Difference]: Without dead ends: 54310 [2022-01-11 07:03:53,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:53,982 INFO L933 BasicCegarLoop]: 5005 mSDtfsCounter, 4654 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 5840 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:03:53,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4654 Valid, 5840 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:03:54,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54310 states. [2022-01-11 07:03:56,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54310 to 53156. [2022-01-11 07:03:56,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53156 states, 53154 states have (on average 1.27181397448922) internal successors, (67602), 53155 states have internal predecessors, (67602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53156 states to 53156 states and 67602 transitions. [2022-01-11 07:03:56,915 INFO L78 Accepts]: Start accepts. Automaton has 53156 states and 67602 transitions. Word has length 163 [2022-01-11 07:03:56,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:03:56,915 INFO L470 AbstractCegarLoop]: Abstraction has 53156 states and 67602 transitions. [2022-01-11 07:03:56,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 53156 states and 67602 transitions. [2022-01-11 07:03:56,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-11 07:03:56,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:03:56,933 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] [2022-01-11 07:03:56,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 07:03:56,934 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:03:56,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:03:56,934 INFO L85 PathProgramCache]: Analyzing trace with hash 811104480, now seen corresponding path program 1 times [2022-01-11 07:03:56,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:03:56,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087048996] [2022-01-11 07:03:56,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:03:56,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:03:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:03:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:03:56,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:03:56,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087048996] [2022-01-11 07:03:56,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087048996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:03:56,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:03:56,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:03:56,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799945087] [2022-01-11 07:03:56,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:03:56,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:03:56,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:03:56,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:03:56,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:03:56,976 INFO L87 Difference]: Start difference. First operand 53156 states and 67602 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:03:59,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:03:59,964 INFO L93 Difference]: Finished difference Result 104052 states and 131084 transitions. [2022-01-11 07:03:59,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:03:59,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 163 [2022-01-11 07:03:59,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:00,045 INFO L225 Difference]: With dead ends: 104052 [2022-01-11 07:04:00,045 INFO L226 Difference]: Without dead ends: 53076 [2022-01-11 07:04:00,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:00,088 INFO L933 BasicCegarLoop]: 4823 mSDtfsCounter, 858 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 8781 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:00,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 8781 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:00,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53076 states. [2022-01-11 07:04:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53076 to 53076. [2022-01-11 07:04:03,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53076 states, 53074 states have (on average 1.271978746655613) internal successors, (67509), 53075 states have internal predecessors, (67509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53076 states to 53076 states and 67509 transitions. [2022-01-11 07:04:03,275 INFO L78 Accepts]: Start accepts. Automaton has 53076 states and 67509 transitions. Word has length 163 [2022-01-11 07:04:03,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:03,275 INFO L470 AbstractCegarLoop]: Abstraction has 53076 states and 67509 transitions. [2022-01-11 07:04:03,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:03,275 INFO L276 IsEmpty]: Start isEmpty. Operand 53076 states and 67509 transitions. [2022-01-11 07:04:03,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 07:04:03,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:03,289 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] [2022-01-11 07:04:03,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 07:04:03,290 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:03,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:03,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1769434718, now seen corresponding path program 1 times [2022-01-11 07:04:03,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:03,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242667700] [2022-01-11 07:04:03,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:03,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:04:03,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:03,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242667700] [2022-01-11 07:04:03,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242667700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:03,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:03,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:04:03,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797767722] [2022-01-11 07:04:03,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:03,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:04:03,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:03,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:04:03,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:03,344 INFO L87 Difference]: Start difference. First operand 53076 states and 67509 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:08,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:08,719 INFO L93 Difference]: Finished difference Result 149103 states and 187025 transitions. [2022-01-11 07:04:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:04:08,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2022-01-11 07:04:08,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:08,876 INFO L225 Difference]: With dead ends: 149103 [2022-01-11 07:04:08,877 INFO L226 Difference]: Without dead ends: 98237 [2022-01-11 07:04:08,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:08,921 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 4724 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 5801 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:08,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4724 Valid, 5801 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:08,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98237 states.