/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_BITWISE.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 11:54:13,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 11:54:13,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 11:54:13,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 11:54:13,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 11:54:13,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 11:54:13,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 11:54:13,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 11:54:13,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 11:54:13,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 11:54:13,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 11:54:13,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 11:54:13,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 11:54:13,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 11:54:13,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 11:54:13,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 11:54:13,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 11:54:13,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 11:54:13,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 11:54:13,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 11:54:13,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 11:54:13,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 11:54:13,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 11:54:13,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 11:54:13,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 11:54:13,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 11:54:13,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 11:54:13,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 11:54:13,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 11:54:13,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 11:54:13,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 11:54:13,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 11:54:13,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 11:54:13,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 11:54:13,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 11:54:13,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 11:54:13,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 11:54:13,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 11:54:13,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 11:54:13,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 11:54:13,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 11:54:13,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 11:54:13,970 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 11:54:13,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 11:54:13,970 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 11:54:13,970 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 11:54:13,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 11:54:13,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 11:54:13,972 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 11:54:13,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 11:54:13,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 11:54:13,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 11:54:13,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 11:54:13,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 11:54:13,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 11:54:13,973 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 11:54:13,973 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 11:54:13,973 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 11:54:13,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 11:54:13,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 11:54:13,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 11:54:13,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 11:54:13,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 11:54:13,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:54:13,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 11:54:13,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 11:54:13,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 11:54:13,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 11:54:13,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 11:54:13,975 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 11:54:13,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 11:54:13,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 11:54:13,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 11:54:13,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 11:54:13,977 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 11:54:13,977 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 11:54:14,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 11:54:14,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 11:54:14,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 11:54:14,201 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 11:54:14,201 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 11:54:14,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i [2022-01-10 11:54:14,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df7eb5509/320aa80d10ab4140adec7a98fb1058b7/FLAG53835063c [2022-01-10 11:54:14,683 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 11:54:14,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i [2022-01-10 11:54:14,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df7eb5509/320aa80d10ab4140adec7a98fb1058b7/FLAG53835063c [2022-01-10 11:54:14,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df7eb5509/320aa80d10ab4140adec7a98fb1058b7 [2022-01-10 11:54:14,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 11:54:14,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 11:54:14,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 11:54:14,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 11:54:14,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 11:54:14,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:54:14" (1/1) ... [2022-01-10 11:54:14,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e1ef01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:14, skipping insertion in model container [2022-01-10 11:54:14,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:54:14" (1/1) ... [2022-01-10 11:54:14,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 11:54:14,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 11:54:15,001 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i[22569,22582] [2022-01-10 11:54:15,006 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i[22645,22658] [2022-01-10 11:54:15,007 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i[22715,22728] [2022-01-10 11:54:15,009 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i[22822,22835] [2022-01-10 11:54:15,010 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i[22894,22907] [2022-01-10 11:54:15,014 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i[23045,23058] [2022-01-10 11:54:15,015 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i[23119,23132] [2022-01-10 11:54:15,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:54:15,037 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 11:54:15,095 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i[22569,22582] [2022-01-10 11:54:15,096 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i[22645,22658] [2022-01-10 11:54:15,097 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i[22715,22728] [2022-01-10 11:54:15,097 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i[22822,22835] [2022-01-10 11:54:15,098 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i[22894,22907] [2022-01-10 11:54:15,099 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i[23045,23058] [2022-01-10 11:54:15,100 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i[23119,23132] [2022-01-10 11:54:15,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:54:15,129 INFO L208 MainTranslator]: Completed translation [2022-01-10 11:54:15,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:15 WrapperNode [2022-01-10 11:54:15,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 11:54:15,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 11:54:15,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 11:54:15,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 11:54:15,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:15" (1/1) ... [2022-01-10 11:54:15,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:15" (1/1) ... [2022-01-10 11:54:15,194 INFO L137 Inliner]: procedures = 122, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 149 [2022-01-10 11:54:15,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 11:54:15,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 11:54:15,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 11:54:15,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 11:54:15,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:15" (1/1) ... [2022-01-10 11:54:15,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:15" (1/1) ... [2022-01-10 11:54:15,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:15" (1/1) ... [2022-01-10 11:54:15,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:15" (1/1) ... [2022-01-10 11:54:15,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:15" (1/1) ... [2022-01-10 11:54:15,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:15" (1/1) ... [2022-01-10 11:54:15,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:15" (1/1) ... [2022-01-10 11:54:15,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 11:54:15,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 11:54:15,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 11:54:15,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 11:54:15,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:15" (1/1) ... [2022-01-10 11:54:15,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:54:15,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:54:15,281 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) [2022-01-10 11:54:15,306 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 [2022-01-10 11:54:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 11:54:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 11:54:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 11:54:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 11:54:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 11:54:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 11:54:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 11:54:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 11:54:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 11:54:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 11:54:15,456 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 11:54:15,458 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 11:54:15,843 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 11:54:15,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 11:54:15,848 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-01-10 11:54:15,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:54:15 BoogieIcfgContainer [2022-01-10 11:54:15,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 11:54:15,850 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 11:54:15,851 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 11:54:15,852 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 11:54:15,854 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:54:15" (1/1) ... [2022-01-10 11:54:15,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:54:15 BasicIcfg [2022-01-10 11:54:15,944 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 11:54:15,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 11:54:15,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 11:54:15,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 11:54:15,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:54:14" (1/4) ... [2022-01-10 11:54:15,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682375cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:54:15, skipping insertion in model container [2022-01-10 11:54:15,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:15" (2/4) ... [2022-01-10 11:54:15,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682375cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:54:15, skipping insertion in model container [2022-01-10 11:54:15,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:54:15" (3/4) ... [2022-01-10 11:54:15,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682375cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:54:15, skipping insertion in model container [2022-01-10 11:54:15,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:54:15" (4/4) ... [2022-01-10 11:54:15,953 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-1.iTransformedIcfg [2022-01-10 11:54:15,957 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 11:54:15,958 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-01-10 11:54:16,015 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 11:54:16,023 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 [2022-01-10 11:54:16,023 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-10 11:54:16,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 11:54:16,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:54:16,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 11:54:16,043 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 11:54:16,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:54:16,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2096047403, now seen corresponding path program 1 times [2022-01-10 11:54:16,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:54:16,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117015262] [2022-01-10 11:54:16,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:54:16,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:54:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:54:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:54:16,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:54:16,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117015262] [2022-01-10 11:54:16,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117015262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:54:16,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:54:16,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 11:54:16,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189013731] [2022-01-10 11:54:16,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:54:16,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 11:54:16,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:54:16,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 11:54:16,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 11:54:16,324 INFO L87 Difference]: Start difference. First operand has 46 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:16,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:54:16,350 INFO L93 Difference]: Finished difference Result 90 states and 148 transitions. [2022-01-10 11:54:16,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 11:54:16,351 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-01-10 11:54:16,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:54:16,360 INFO L225 Difference]: With dead ends: 90 [2022-01-10 11:54:16,360 INFO L226 Difference]: Without dead ends: 40 [2022-01-10 11:54:16,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 11:54:16,366 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 11:54:16,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 11:54:16,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-10 11:54:16,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-01-10 11:54:16,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.303030303030303) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2022-01-10 11:54:16,405 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 6 [2022-01-10 11:54:16,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:54:16,405 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2022-01-10 11:54:16,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:16,406 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-01-10 11:54:16,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 11:54:16,407 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:54:16,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 11:54:16,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 11:54:16,408 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 11:54:16,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:54:16,409 INFO L85 PathProgramCache]: Analyzing trace with hash 2096077194, now seen corresponding path program 1 times [2022-01-10 11:54:16,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:54:16,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870230070] [2022-01-10 11:54:16,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:54:16,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:54:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:54:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:54:16,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:54:16,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870230070] [2022-01-10 11:54:16,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870230070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:54:16,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:54:16,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 11:54:16,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981659754] [2022-01-10 11:54:16,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:54:16,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 11:54:16,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:54:16,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 11:54:16,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 11:54:16,561 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:16,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:54:16,648 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-01-10 11:54:16,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 11:54:16,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-01-10 11:54:16,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:54:16,655 INFO L225 Difference]: With dead ends: 43 [2022-01-10 11:54:16,655 INFO L226 Difference]: Without dead ends: 39 [2022-01-10 11:54:16,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 11:54:16,657 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 58 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 11:54:16,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 36 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 11:54:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-10 11:54:16,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2022-01-10 11:54:16,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:16,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-01-10 11:54:16,670 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 6 [2022-01-10 11:54:16,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:54:16,670 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-01-10 11:54:16,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:16,670 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-01-10 11:54:16,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 11:54:16,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:54:16,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:54:16,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 11:54:16,671 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 11:54:16,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:54:16,672 INFO L85 PathProgramCache]: Analyzing trace with hash 554839146, now seen corresponding path program 1 times [2022-01-10 11:54:16,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:54:16,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059916341] [2022-01-10 11:54:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:54:16,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:54:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:54:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:54:16,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:54:16,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059916341] [2022-01-10 11:54:16,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059916341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:54:16,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:54:16,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 11:54:16,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752872138] [2022-01-10 11:54:16,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:54:16,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 11:54:16,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:54:16,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 11:54:16,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 11:54:16,799 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:16,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:54:16,905 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-01-10 11:54:16,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 11:54:16,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-01-10 11:54:16,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:54:16,907 INFO L225 Difference]: With dead ends: 36 [2022-01-10 11:54:16,907 INFO L226 Difference]: Without dead ends: 34 [2022-01-10 11:54:16,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 11:54:16,908 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 11:54:16,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 75 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 11:54:16,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-10 11:54:16,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-01-10 11:54:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:16,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-01-10 11:54:16,913 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 7 [2022-01-10 11:54:16,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:54:16,914 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-01-10 11:54:16,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:16,914 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-01-10 11:54:16,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 11:54:16,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:54:16,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:54:16,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 11:54:16,915 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 11:54:16,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:54:16,916 INFO L85 PathProgramCache]: Analyzing trace with hash -292649046, now seen corresponding path program 1 times [2022-01-10 11:54:16,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:54:16,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774305454] [2022-01-10 11:54:16,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:54:16,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:54:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:54:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:54:17,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:54:17,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774305454] [2022-01-10 11:54:17,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774305454] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:54:17,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:54:17,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 11:54:17,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018226204] [2022-01-10 11:54:17,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:54:17,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 11:54:17,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:54:17,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 11:54:17,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 11:54:17,108 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:17,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:54:17,389 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2022-01-10 11:54:17,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 11:54:17,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-10 11:54:17,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:54:17,394 INFO L225 Difference]: With dead ends: 71 [2022-01-10 11:54:17,394 INFO L226 Difference]: Without dead ends: 69 [2022-01-10 11:54:17,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 11:54:17,395 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 11:54:17,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 95 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 11:54:17,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-10 11:54:17,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2022-01-10 11:54:17,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:17,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-01-10 11:54:17,405 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 9 [2022-01-10 11:54:17,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:54:17,406 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-01-10 11:54:17,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:17,406 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-01-10 11:54:17,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 11:54:17,407 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:54:17,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:54:17,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 11:54:17,407 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 11:54:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:54:17,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2114934798, now seen corresponding path program 1 times [2022-01-10 11:54:17,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:54:17,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053458209] [2022-01-10 11:54:17,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:54:17,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:54:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:54:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:54:17,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:54:17,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053458209] [2022-01-10 11:54:17,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053458209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:54:17,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:54:17,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 11:54:17,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715578138] [2022-01-10 11:54:17,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:54:17,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 11:54:17,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:54:17,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 11:54:17,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 11:54:17,532 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:17,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:54:17,657 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-01-10 11:54:17,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 11:54:17,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 11:54:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:54:17,658 INFO L225 Difference]: With dead ends: 50 [2022-01-10 11:54:17,658 INFO L226 Difference]: Without dead ends: 48 [2022-01-10 11:54:17,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 11:54:17,659 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 5 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 11:54:17,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 68 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 11:54:17,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-10 11:54:17,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-01-10 11:54:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.2) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:17,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2022-01-10 11:54:17,666 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 10 [2022-01-10 11:54:17,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:54:17,667 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2022-01-10 11:54:17,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:17,667 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2022-01-10 11:54:17,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 11:54:17,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:54:17,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:54:17,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 11:54:17,668 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 11:54:17,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:54:17,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1904474946, now seen corresponding path program 1 times [2022-01-10 11:54:17,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:54:17,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064509269] [2022-01-10 11:54:17,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:54:17,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:54:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:54:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:54:17,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:54:17,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064509269] [2022-01-10 11:54:17,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064509269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:54:17,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:54:17,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 11:54:17,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889312765] [2022-01-10 11:54:17,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:54:17,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 11:54:17,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:54:17,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 11:54:17,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 11:54:17,770 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:17,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:54:17,926 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2022-01-10 11:54:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 11:54:17,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-01-10 11:54:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:54:17,927 INFO L225 Difference]: With dead ends: 63 [2022-01-10 11:54:17,927 INFO L226 Difference]: Without dead ends: 51 [2022-01-10 11:54:17,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 11:54:17,928 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 37 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 11:54:17,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 74 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 11:54:17,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-10 11:54:17,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-01-10 11:54:17,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 49 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:17,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2022-01-10 11:54:17,935 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 13 [2022-01-10 11:54:17,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:54:17,935 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2022-01-10 11:54:17,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:17,936 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2022-01-10 11:54:17,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 11:54:17,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:54:17,937 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:54:17,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 11:54:17,951 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 11:54:17,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:54:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash -275261104, now seen corresponding path program 1 times [2022-01-10 11:54:17,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:54:17,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608848975] [2022-01-10 11:54:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:54:17,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:54:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:54:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:54:18,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:54:18,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608848975] [2022-01-10 11:54:18,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608848975] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 11:54:18,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689165853] [2022-01-10 11:54:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:54:18,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:54:18,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:54:18,100 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) [2022-01-10 11:54:18,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 11:54:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:54:18,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 11:54:18,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 11:54:18,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:54:18,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:54:18,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:54:18,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-01-10 11:54:18,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:54:18,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:54:18,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:54:18,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-01-10 11:54:18,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:54:18,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 11:54:18,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-01-10 11:54:18,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:54:18,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 11:54:18,574 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:54:18,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 13 [2022-01-10 11:54:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:54:18,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 11:54:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:54:18,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689165853] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 11:54:18,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 11:54:18,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-01-10 11:54:18,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51988154] [2022-01-10 11:54:18,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 11:54:18,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 11:54:18,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:54:18,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 11:54:18,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 11:54:18,817 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:19,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:54:19,085 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2022-01-10 11:54:19,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 11:54:19,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 11:54:19,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:54:19,086 INFO L225 Difference]: With dead ends: 72 [2022-01-10 11:54:19,087 INFO L226 Difference]: Without dead ends: 50 [2022-01-10 11:54:19,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 11:54:19,088 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 11:54:19,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 124 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 15 Unchecked, 0.2s Time] [2022-01-10 11:54:19,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-10 11:54:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-01-10 11:54:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2022-01-10 11:54:19,094 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 16 [2022-01-10 11:54:19,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:54:19,095 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2022-01-10 11:54:19,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:19,095 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2022-01-10 11:54:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 11:54:19,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:54:19,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:54:19,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 11:54:19,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:54:19,312 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 11:54:19,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:54:19,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1729248840, now seen corresponding path program 1 times [2022-01-10 11:54:19,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:54:19,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023870382] [2022-01-10 11:54:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:54:19,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:54:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:54:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:54:19,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:54:19,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023870382] [2022-01-10 11:54:19,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023870382] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 11:54:19,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604302772] [2022-01-10 11:54:19,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:54:19,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:54:19,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:54:19,744 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) [2022-01-10 11:54:19,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 11:54:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:54:20,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-10 11:54:20,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 11:54:20,255 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 11:54:20,266 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 11:54:20,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:54:20,327 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2022-01-10 11:54:20,335 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-01-10 11:54:20,345 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 44 [2022-01-10 11:54:20,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:54:20,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:54:20,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 11:54:20,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-01-10 11:54:20,367 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-01-10 11:54:20,388 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-10 11:54:20,388 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2022-01-10 11:54:20,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:54:20,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:54:20,468 INFO L353 Elim1Store]: treesize reduction 137, result has 7.4 percent of original size [2022-01-10 11:54:20,469 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 45 [2022-01-10 11:54:20,491 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-10 11:54:20,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-01-10 11:54:20,630 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 11:54:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:54:20,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 11:54:21,122 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:54:21,123 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2022-01-10 11:54:21,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 110 [2022-01-10 11:54:21,140 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 99 [2022-01-10 11:54:25,704 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:54:25,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 263 treesize of output 208 [2022-01-10 11:54:25,715 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 414 treesize of output 378 [2022-01-10 11:54:25,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 378 treesize of output 362