/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/recursive-simple/fibo_10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:58:28,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:58:28,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:58:28,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:58:28,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:58:28,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:58:28,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:58:28,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:58:28,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:58:28,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:58:28,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:58:28,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:58:28,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:58:28,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:58:28,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:58:28,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:58:28,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:58:28,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:58:28,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:58:28,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:58:28,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:58:28,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:58:28,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:58:28,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:58:28,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:58:28,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:58:28,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:58:28,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:58:28,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:58:28,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:58:28,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:58:28,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:58:28,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:58:28,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:58:28,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:58:28,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:58:28,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:58:28,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:58:28,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:58:28,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:58:28,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:58:28,188 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 05:58:28,227 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:58:28,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:58:28,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:58:28,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:58:28,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:58:28,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:58:28,229 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:58:28,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:58:28,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:58:28,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:58:28,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:58:28,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:58:28,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:58:28,230 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:58:28,230 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:58:28,230 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:58:28,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:58:28,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:58:28,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:58:28,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:58:28,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:58:28,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:58:28,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:58:28,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:58:28,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:58:28,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:58:28,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:58:28,231 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:58:28,232 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:58:28,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:58:28,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:58:28,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:58:28,233 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:58:28,233 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:58:28,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:58:28,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:58:28,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:58:28,412 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:58:28,418 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:58:28,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2022-01-11 05:58:28,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1dee06f8/6fc213e0fb7e4fb8ad3a9023acbb8dfd/FLAGe7da265d8 [2022-01-11 05:58:28,817 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:58:28,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2022-01-11 05:58:28,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1dee06f8/6fc213e0fb7e4fb8ad3a9023acbb8dfd/FLAGe7da265d8 [2022-01-11 05:58:28,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1dee06f8/6fc213e0fb7e4fb8ad3a9023acbb8dfd [2022-01-11 05:58:28,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:58:28,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:58:28,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:58:28,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:58:28,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:58:28,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:58:28" (1/1) ... [2022-01-11 05:58:28,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21569e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:28, skipping insertion in model container [2022-01-11 05:58:28,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:58:28" (1/1) ... [2022-01-11 05:58:28,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:58:28,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:58:28,968 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_10-2.c[743,756] [2022-01-11 05:58:28,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:58:28,989 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:58:28,998 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_10-2.c[743,756] [2022-01-11 05:58:28,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:58:29,007 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:58:29,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:29 WrapperNode [2022-01-11 05:58:29,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:58:29,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:58:29,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:58:29,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:58:29,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:29" (1/1) ... [2022-01-11 05:58:29,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:29" (1/1) ... [2022-01-11 05:58:29,027 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-01-11 05:58:29,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:58:29,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:58:29,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:58:29,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:58:29,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:29" (1/1) ... [2022-01-11 05:58:29,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:29" (1/1) ... [2022-01-11 05:58:29,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:29" (1/1) ... [2022-01-11 05:58:29,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:29" (1/1) ... [2022-01-11 05:58:29,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:29" (1/1) ... [2022-01-11 05:58:29,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:29" (1/1) ... [2022-01-11 05:58:29,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:29" (1/1) ... [2022-01-11 05:58:29,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:58:29,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:58:29,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:58:29,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:58:29,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:29" (1/1) ... [2022-01-11 05:58:29,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:58:29,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:58:29,077 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 05:58:29,086 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 05:58:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:58:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:58:29,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:58:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:58:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-01-11 05:58:29,123 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-01-11 05:58:29,161 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:58:29,162 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:58:29,223 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:58:29,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:58:29,227 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 05:58:29,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:58:29 BoogieIcfgContainer [2022-01-11 05:58:29,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:58:29,229 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:58:29,229 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:58:29,230 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:58:29,232 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:58:29" (1/1) ... [2022-01-11 05:58:29,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:58:29 BasicIcfg [2022-01-11 05:58:29,275 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:58:29,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:58:29,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:58:29,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:58:29,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:58:28" (1/4) ... [2022-01-11 05:58:29,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7692b78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:58:29, skipping insertion in model container [2022-01-11 05:58:29,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:29" (2/4) ... [2022-01-11 05:58:29,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7692b78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:58:29, skipping insertion in model container [2022-01-11 05:58:29,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:58:29" (3/4) ... [2022-01-11 05:58:29,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7692b78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:58:29, skipping insertion in model container [2022-01-11 05:58:29,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:58:29" (4/4) ... [2022-01-11 05:58:29,280 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_10-2.cTransformedIcfg [2022-01-11 05:58:29,283 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:58:29,284 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 05:58:29,327 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:58:29,332 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 05:58:29,332 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 05:58:29,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-11 05:58:29,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 05:58:29,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:29,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:29,360 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:29,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:29,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2142902620, now seen corresponding path program 1 times [2022-01-11 05:58:29,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:29,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918838992] [2022-01-11 05:58:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:29,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:29,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:29,653 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 05:58:29,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:29,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918838992] [2022-01-11 05:58:29,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918838992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:58:29,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:58:29,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:58:29,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535893168] [2022-01-11 05:58:29,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:58:29,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:58:29,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:29,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:58:29,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:58:29,676 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 05:58:29,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:58:29,783 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-01-11 05:58:29,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:58:29,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-01-11 05:58:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:58:29,792 INFO L225 Difference]: With dead ends: 29 [2022-01-11 05:58:29,792 INFO L226 Difference]: Without dead ends: 17 [2022-01-11 05:58:29,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:58:29,801 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:58:29,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 40 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:58:29,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-11 05:58:29,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-11 05:58:29,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-11 05:58:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-01-11 05:58:29,829 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2022-01-11 05:58:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:58:29,830 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-01-11 05:58:29,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 05:58:29,832 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-01-11 05:58:29,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 05:58:29,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:29,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:29,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:58:29,836 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:29,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:29,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1380246405, now seen corresponding path program 1 times [2022-01-11 05:58:29,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:29,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410372045] [2022-01-11 05:58:29,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:29,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:29,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:29,912 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 05:58:29,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:29,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410372045] [2022-01-11 05:58:29,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410372045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:58:29,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:58:29,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:58:29,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121882170] [2022-01-11 05:58:29,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:58:29,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:58:29,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:29,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:58:29,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:58:29,914 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 05:58:29,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:58:29,946 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2022-01-11 05:58:29,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:58:29,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-11 05:58:29,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:58:29,947 INFO L225 Difference]: With dead ends: 23 [2022-01-11 05:58:29,947 INFO L226 Difference]: Without dead ends: 19 [2022-01-11 05:58:29,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:58:29,949 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:58:29,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 30 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:58:29,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-11 05:58:29,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-01-11 05:58:29,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-11 05:58:29,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-01-11 05:58:29,953 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2022-01-11 05:58:29,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:58:29,954 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-01-11 05:58:29,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 05:58:29,954 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-01-11 05:58:29,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 05:58:29,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:29,955 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:29,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:58:29,955 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:29,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:29,955 INFO L85 PathProgramCache]: Analyzing trace with hash -794894887, now seen corresponding path program 1 times [2022-01-11 05:58:29,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:29,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33785854] [2022-01-11 05:58:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:29,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:30,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:30,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:30,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 05:58:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 05:58:30,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:30,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33785854] [2022-01-11 05:58:30,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33785854] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:58:30,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752246273] [2022-01-11 05:58:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:30,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:30,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:58:30,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:58:30,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 05:58:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:30,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-11 05:58:30,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:58:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 05:58:30,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:58:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 05:58:31,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752246273] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:58:31,026 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:58:31,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 13 [2022-01-11 05:58:31,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034177812] [2022-01-11 05:58:31,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:58:31,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-11 05:58:31,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:31,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-11 05:58:31,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:58:31,029 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 13 states, 10 states have (on average 2.7) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-01-11 05:58:31,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:58:31,777 INFO L93 Difference]: Finished difference Result 46 states and 74 transitions. [2022-01-11 05:58:31,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:58:31,777 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.7) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 22 [2022-01-11 05:58:31,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:58:31,778 INFO L225 Difference]: With dead ends: 46 [2022-01-11 05:58:31,778 INFO L226 Difference]: Without dead ends: 32 [2022-01-11 05:58:31,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-01-11 05:58:31,780 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 05:58:31,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 62 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 05:58:31,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-11 05:58:31,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2022-01-11 05:58:31,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-01-11 05:58:31,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2022-01-11 05:58:31,787 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 22 [2022-01-11 05:58:31,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:58:31,787 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 38 transitions. [2022-01-11 05:58:31,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.7) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-01-11 05:58:31,787 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2022-01-11 05:58:31,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-11 05:58:31,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:31,788 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:31,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 05:58:32,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:32,024 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:32,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:32,024 INFO L85 PathProgramCache]: Analyzing trace with hash -577495408, now seen corresponding path program 1 times [2022-01-11 05:58:32,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:32,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374616158] [2022-01-11 05:58:32,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:32,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:32,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:32,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:32,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:32,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-11 05:58:32,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:32,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374616158] [2022-01-11 05:58:32,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374616158] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:58:32,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340022458] [2022-01-11 05:58:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:32,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:32,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:58:32,238 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:58:32,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 05:58:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:32,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-11 05:58:32,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:58:32,460 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-11 05:58:32,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:58:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-11 05:58:32,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340022458] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:58:32,728 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:58:32,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2022-01-11 05:58:32,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510575607] [2022-01-11 05:58:32,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:58:32,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-11 05:58:32,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-11 05:58:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-11 05:58:32,733 INFO L87 Difference]: Start difference. First operand 27 states and 38 transitions. Second operand has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 6 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-01-11 05:58:32,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:58:32,858 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2022-01-11 05:58:32,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:58:32,858 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 6 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) Word has length 36 [2022-01-11 05:58:32,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:58:32,860 INFO L225 Difference]: With dead ends: 43 [2022-01-11 05:58:32,860 INFO L226 Difference]: Without dead ends: 39 [2022-01-11 05:58:32,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-01-11 05:58:32,861 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:58:32,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 58 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:58:32,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-11 05:58:32,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2022-01-11 05:58:32,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2022-01-11 05:58:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 42 transitions. [2022-01-11 05:58:32,867 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 42 transitions. Word has length 36 [2022-01-11 05:58:32,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:58:32,867 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 42 transitions. [2022-01-11 05:58:32,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 6 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-01-11 05:58:32,867 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 42 transitions. [2022-01-11 05:58:32,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 05:58:32,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:32,869 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:32,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-11 05:58:33,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-11 05:58:33,103 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:33,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:33,103 INFO L85 PathProgramCache]: Analyzing trace with hash -74975079, now seen corresponding path program 2 times [2022-01-11 05:58:33,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:33,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339746236] [2022-01-11 05:58:33,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:33,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:33,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:33,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:33,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:33,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:33,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:33,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:33,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:33,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 19 proven. 74 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-11 05:58:33,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:33,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339746236] [2022-01-11 05:58:33,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339746236] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:58:33,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470448227] [2022-01-11 05:58:33,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 05:58:33,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:33,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:58:33,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:58:33,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 05:58:33,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 05:58:33,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 05:58:33,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 05:58:33,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:58:33,570 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 59 proven. 26 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-01-11 05:58:33,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:58:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 59 proven. 34 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-11 05:58:34,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470448227] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:58:34,034 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:58:34,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 9] total 21 [2022-01-11 05:58:34,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508238770] [2022-01-11 05:58:34,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:58:34,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-11 05:58:34,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:34,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-11 05:58:34,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-01-11 05:58:34,037 INFO L87 Difference]: Start difference. First operand 29 states and 42 transitions. Second operand has 21 states, 17 states have (on average 2.823529411764706) internal successors, (48), 19 states have internal predecessors, (48), 10 states have call successors, (14), 1 states have call predecessors, (14), 9 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2022-01-11 05:58:34,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:58:34,276 INFO L93 Difference]: Finished difference Result 81 states and 152 transitions. [2022-01-11 05:58:34,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:58:34,279 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.823529411764706) internal successors, (48), 19 states have internal predecessors, (48), 10 states have call successors, (14), 1 states have call predecessors, (14), 9 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) Word has length 61 [2022-01-11 05:58:34,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:58:34,280 INFO L225 Difference]: With dead ends: 81 [2022-01-11 05:58:34,280 INFO L226 Difference]: Without dead ends: 55 [2022-01-11 05:58:34,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2022-01-11 05:58:34,281 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 46 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:58:34,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 112 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:58:34,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-11 05:58:34,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2022-01-11 05:58:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 7 states have call successors, (7), 2 states have call predecessors, (7), 11 states have return successors, (43), 15 states have call predecessors, (43), 7 states have call successors, (43) [2022-01-11 05:58:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 82 transitions. [2022-01-11 05:58:34,290 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 82 transitions. Word has length 61 [2022-01-11 05:58:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:58:34,290 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 82 transitions. [2022-01-11 05:58:34,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.823529411764706) internal successors, (48), 19 states have internal predecessors, (48), 10 states have call successors, (14), 1 states have call predecessors, (14), 9 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2022-01-11 05:58:34,291 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 82 transitions. [2022-01-11 05:58:34,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 05:58:34,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:34,292 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:34,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 05:58:34,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:34,505 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:34,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:34,506 INFO L85 PathProgramCache]: Analyzing trace with hash 311221116, now seen corresponding path program 2 times [2022-01-11 05:58:34,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:34,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854493836] [2022-01-11 05:58:34,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:34,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:34,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:34,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:34,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:34,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:34,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 05:58:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:34,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-11 05:58:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:34,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-11 05:58:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:34,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:34,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:34,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:34,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 05:58:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:34,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-11 05:58:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:34,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-11 05:58:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 49 proven. 106 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-01-11 05:58:34,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:34,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854493836] [2022-01-11 05:58:34,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854493836] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:58:34,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904372228] [2022-01-11 05:58:34,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 05:58:34,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:34,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:58:34,932 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:58:34,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 05:58:35,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 05:58:35,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 05:58:35,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-11 05:58:35,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:58:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 152 proven. 45 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-01-11 05:58:35,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:58:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 154 proven. 23 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-01-11 05:58:36,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904372228] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:58:36,569 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:58:36,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 26 [2022-01-11 05:58:36,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370048449] [2022-01-11 05:58:36,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:58:36,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-11 05:58:36,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:36,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-11 05:58:36,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2022-01-11 05:58:36,572 INFO L87 Difference]: Start difference. First operand 49 states and 82 transitions. Second operand has 26 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 23 states have internal predecessors, (51), 15 states have call successors, (20), 1 states have call predecessors, (20), 10 states have return successors, (24), 12 states have call predecessors, (24), 15 states have call successors, (24) [2022-01-11 05:58:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:58:36,951 INFO L93 Difference]: Finished difference Result 84 states and 154 transitions. [2022-01-11 05:58:36,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 05:58:36,953 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 23 states have internal predecessors, (51), 15 states have call successors, (20), 1 states have call predecessors, (20), 10 states have return successors, (24), 12 states have call predecessors, (24), 15 states have call successors, (24) Word has length 82 [2022-01-11 05:58:36,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:58:36,953 INFO L225 Difference]: With dead ends: 84 [2022-01-11 05:58:36,954 INFO L226 Difference]: Without dead ends: 38 [2022-01-11 05:58:36,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 173 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-01-11 05:58:36,955 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 56 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:58:36,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 102 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:58:36,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-11 05:58:36,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-01-11 05:58:36,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 7 states have return successors, (18), 9 states have call predecessors, (18), 5 states have call successors, (18) [2022-01-11 05:58:36,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2022-01-11 05:58:36,960 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 82 [2022-01-11 05:58:36,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:58:36,960 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2022-01-11 05:58:36,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 23 states have internal predecessors, (51), 15 states have call successors, (20), 1 states have call predecessors, (20), 10 states have return successors, (24), 12 states have call predecessors, (24), 15 states have call successors, (24) [2022-01-11 05:58:36,961 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2022-01-11 05:58:36,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 05:58:36,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:36,962 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:36,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-11 05:58:37,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:37,166 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:37,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:37,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1832080039, now seen corresponding path program 3 times [2022-01-11 05:58:37,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:37,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662367380] [2022-01-11 05:58:37,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:37,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:37,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:37,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:37,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:37,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:37,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:37,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:37,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:37,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 34 proven. 59 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-11 05:58:37,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:37,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662367380] [2022-01-11 05:58:37,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662367380] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:58:37,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776504076] [2022-01-11 05:58:37,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 05:58:37,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:37,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:58:37,392 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:58:37,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 05:58:37,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-11 05:58:37,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 05:58:37,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 05:58:37,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:58:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 62 proven. 24 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-01-11 05:58:37,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:58:38,075 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 62 proven. 31 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-11 05:58:38,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776504076] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:58:38,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:58:38,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 9] total 20 [2022-01-11 05:58:38,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479150376] [2022-01-11 05:58:38,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:58:38,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-11 05:58:38,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:38,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-11 05:58:38,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-01-11 05:58:38,076 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 20 states, 17 states have (on average 2.823529411764706) internal successors, (48), 19 states have internal predecessors, (48), 11 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2022-01-11 05:58:38,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:58:38,374 INFO L93 Difference]: Finished difference Result 80 states and 132 transitions. [2022-01-11 05:58:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:58:38,374 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.823529411764706) internal successors, (48), 19 states have internal predecessors, (48), 11 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) Word has length 61 [2022-01-11 05:58:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:58:38,375 INFO L225 Difference]: With dead ends: 80 [2022-01-11 05:58:38,375 INFO L226 Difference]: Without dead ends: 48 [2022-01-11 05:58:38,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-01-11 05:58:38,377 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 52 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:58:38,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 99 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:58:38,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-11 05:58:38,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2022-01-11 05:58:38,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 6 states have call successors, (6), 3 states have call predecessors, (6), 9 states have return successors, (29), 12 states have call predecessors, (29), 6 states have call successors, (29) [2022-01-11 05:58:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2022-01-11 05:58:38,383 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 61 [2022-01-11 05:58:38,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:58:38,383 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2022-01-11 05:58:38,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.823529411764706) internal successors, (48), 19 states have internal predecessors, (48), 11 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2022-01-11 05:58:38,384 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2022-01-11 05:58:38,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-01-11 05:58:38,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:38,387 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 31, 18, 18, 18, 18, 18, 18, 13, 6, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:38,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-11 05:58:38,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:38,603 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:38,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:38,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1099935067, now seen corresponding path program 4 times [2022-01-11 05:58:38,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:38,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714009190] [2022-01-11 05:58:38,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:38,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:38,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:38,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-11 05:58:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:39,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3588 backedges. 130 proven. 542 refuted. 0 times theorem prover too weak. 2916 trivial. 0 not checked. [2022-01-11 05:58:39,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:39,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714009190] [2022-01-11 05:58:39,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714009190] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:58:39,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97565460] [2022-01-11 05:58:39,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-11 05:58:39,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:39,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:58:39,354 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:58:39,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-11 05:58:39,605 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-11 05:58:39,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 05:58:39,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-11 05:58:39,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:58:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3588 backedges. 324 proven. 333 refuted. 0 times theorem prover too weak. 2931 trivial. 0 not checked. [2022-01-11 05:58:46,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:58:47,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3588 backedges. 324 proven. 348 refuted. 0 times theorem prover too weak. 2916 trivial. 0 not checked. [2022-01-11 05:58:47,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97565460] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:58:47,679 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:58:47,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 11] total 25 [2022-01-11 05:58:47,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091481904] [2022-01-11 05:58:47,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:58:47,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-11 05:58:47,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:47,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-11 05:58:47,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2022-01-11 05:58:47,681 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 24 states have internal predecessors, (57), 15 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) [2022-01-11 05:58:48,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:58:48,529 INFO L93 Difference]: Finished difference Result 88 states and 161 transitions. [2022-01-11 05:58:48,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-11 05:58:48,529 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 24 states have internal predecessors, (57), 15 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) Word has length 239 [2022-01-11 05:58:48,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:58:48,531 INFO L225 Difference]: With dead ends: 88 [2022-01-11 05:58:48,531 INFO L226 Difference]: Without dead ends: 49 [2022-01-11 05:58:48,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 530 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=244, Invalid=946, Unknown=0, NotChecked=0, Total=1190 [2022-01-11 05:58:48,533 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 106 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 05:58:48,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 157 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 05:58:48,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-11 05:58:48,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-01-11 05:58:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.03125) internal successors, (33), 31 states have internal predecessors, (33), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (31), 13 states have call predecessors, (31), 7 states have call successors, (31) [2022-01-11 05:58:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2022-01-11 05:58:48,545 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 239 [2022-01-11 05:58:48,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:58:48,545 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2022-01-11 05:58:48,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 24 states have internal predecessors, (57), 15 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) [2022-01-11 05:58:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2022-01-11 05:58:48,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-01-11 05:58:48,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:48,558 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:48,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-11 05:58:48,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:48,758 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:48,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:48,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1283440255, now seen corresponding path program 5 times [2022-01-11 05:58:48,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:48,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888045360] [2022-01-11 05:58:48,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:48,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 05:58:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 05:58:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-11 05:58:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 05:58:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-11 05:58:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 202 proven. 971 refuted. 0 times theorem prover too weak. 5647 trivial. 0 not checked. [2022-01-11 05:58:49,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:49,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888045360] [2022-01-11 05:58:49,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888045360] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:58:49,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426043378] [2022-01-11 05:58:49,869 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-11 05:58:49,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:49,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:58:49,891 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:58:49,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-11 05:58:50,352 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-01-11 05:58:50,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 05:58:50,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-11 05:58:50,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:58:54,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 3629 proven. 30 refuted. 0 times theorem prover too weak. 3161 trivial. 0 not checked. [2022-01-11 05:58:54,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:58:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 505 proven. 735 refuted. 0 times theorem prover too weak. 5580 trivial. 0 not checked. [2022-01-11 05:58:56,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426043378] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:58:56,047 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:58:56,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 9] total 24 [2022-01-11 05:58:56,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796499013] [2022-01-11 05:58:56,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:58:56,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-11 05:58:56,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:56,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-11 05:58:56,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-01-11 05:58:56,049 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand has 24 states, 20 states have (on average 2.85) internal successors, (57), 21 states have internal predecessors, (57), 15 states have call successors, (22), 2 states have call predecessors, (22), 12 states have return successors, (29), 16 states have call predecessors, (29), 15 states have call successors, (29) [2022-01-11 05:58:58,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:58:58,445 INFO L93 Difference]: Finished difference Result 103 states and 218 transitions. [2022-01-11 05:58:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-11 05:58:58,446 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 2.85) internal successors, (57), 21 states have internal predecessors, (57), 15 states have call successors, (22), 2 states have call predecessors, (22), 12 states have return successors, (29), 16 states have call predecessors, (29), 15 states have call successors, (29) Word has length 326 [2022-01-11 05:58:58,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:58:58,447 INFO L225 Difference]: With dead ends: 103 [2022-01-11 05:58:58,447 INFO L226 Difference]: Without dead ends: 60 [2022-01-11 05:58:58,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 736 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=341, Invalid=1219, Unknown=0, NotChecked=0, Total=1560 [2022-01-11 05:58:58,448 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 115 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-11 05:58:58,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 150 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-11 05:58:58,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-11 05:58:58,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2022-01-11 05:58:58,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 12 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (30), 14 states have call predecessors, (30), 12 states have call successors, (30) [2022-01-11 05:58:58,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2022-01-11 05:58:58,458 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 326 [2022-01-11 05:58:58,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:58:58,459 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2022-01-11 05:58:58,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 2.85) internal successors, (57), 21 states have internal predecessors, (57), 15 states have call successors, (22), 2 states have call predecessors, (22), 12 states have return successors, (29), 16 states have call predecessors, (29), 15 states have call successors, (29) [2022-01-11 05:58:58,459 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2022-01-11 05:58:58,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-01-11 05:58:58,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:58,460 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:58,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-11 05:58:58,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:58,665 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:58,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:58,665 INFO L85 PathProgramCache]: Analyzing trace with hash -781103911, now seen corresponding path program 6 times [2022-01-11 05:58:58,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:58,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297923671] [2022-01-11 05:58:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:58,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 05:58:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-11 05:58:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-11 05:58:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 05:58:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-11 05:58:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 210 proven. 1414 refuted. 0 times theorem prover too weak. 5196 trivial. 0 not checked. [2022-01-11 05:58:59,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:59,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297923671] [2022-01-11 05:58:59,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297923671] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:58:59,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485090360] [2022-01-11 05:58:59,964 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-11 05:58:59,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:59,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:58:59,965 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:58:59,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-11 05:59:00,557 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-01-11 05:59:00,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 05:59:00,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-11 05:59:00,564 INFO L286 TraceCheckSpWp]: Computing forward predicates...