/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/openssl/s3_srvr.blast.13.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:14:07,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:14:07,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:14:07,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:14:07,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:14:07,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:14:07,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:14:07,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:14:07,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:14:07,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:14:07,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:14:07,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:14:07,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:14:07,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:14:07,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:14:07,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:14:07,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:14:07,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:14:07,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:14:07,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:14:07,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:14:07,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:14:07,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:14:07,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:14:07,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 04:14:07,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 04:14:07,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 04:14:07,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 04:14:07,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 04:14:07,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 04:14:07,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 04:14:07,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 04:14:07,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 04:14:07,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 04:14:07,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 04:14:07,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 04:14:07,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 04:14:07,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 04:14:07,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:14:07,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:14:07,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:14:07,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 04:14:07,273 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:14:07,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:14:07,274 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:14:07,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:14:07,275 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:14:07,275 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:14:07,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:14:07,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:14:07,275 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:14:07,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:14:07,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:14:07,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:14:07,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:14:07,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:14:07,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:14:07,277 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:14:07,277 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:14:07,277 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:14:07,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:14:07,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:14:07,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:14:07,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:14:07,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:14:07,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:14:07,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:14:07,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:14:07,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:14:07,278 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:14:07,278 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:14:07,278 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:14:07,278 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:14:07,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:14:07,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:14:07,279 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:14:07,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:14:07,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:14:07,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:14:07,496 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:14:07,497 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:14:07,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_srvr.blast.13.i.cil-1.c [2022-01-10 04:14:07,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9873cb2dd/d88ef7d10cea48ceb5ad0cc517c5a462/FLAG7ba040bef [2022-01-10 04:14:08,012 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:14:08,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.13.i.cil-1.c [2022-01-10 04:14:08,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9873cb2dd/d88ef7d10cea48ceb5ad0cc517c5a462/FLAG7ba040bef [2022-01-10 04:14:08,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9873cb2dd/d88ef7d10cea48ceb5ad0cc517c5a462 [2022-01-10 04:14:08,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:14:08,047 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:14:08,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:14:08,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:14:08,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:14:08,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:14:08" (1/1) ... [2022-01-10 04:14:08,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a8cf72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:08, skipping insertion in model container [2022-01-10 04:14:08,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:14:08" (1/1) ... [2022-01-10 04:14:08,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:14:08,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:14:08,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.13.i.cil-1.c[74354,74367] [2022-01-10 04:14:08,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:14:08,464 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 04:14:08,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:14:08,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.13.i.cil-1.c[74354,74367] [2022-01-10 04:14:08,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:14:08,573 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:14:08,646 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.13.i.cil-1.c[74354,74367] [2022-01-10 04:14:08,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:14:08,663 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:14:08,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:08 WrapperNode [2022-01-10 04:14:08,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:14:08,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:14:08,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:14:08,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:14:08,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:08" (1/1) ... [2022-01-10 04:14:08,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:08" (1/1) ... [2022-01-10 04:14:08,739 INFO L137 Inliner]: procedures = 41, calls = 248, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 785 [2022-01-10 04:14:08,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:14:08,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:14:08,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:14:08,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:14:08,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:08" (1/1) ... [2022-01-10 04:14:08,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:08" (1/1) ... [2022-01-10 04:14:08,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:08" (1/1) ... [2022-01-10 04:14:08,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:08" (1/1) ... [2022-01-10 04:14:08,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:08" (1/1) ... [2022-01-10 04:14:08,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:08" (1/1) ... [2022-01-10 04:14:08,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:08" (1/1) ... [2022-01-10 04:14:08,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:14:08,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:14:08,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:14:08,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:14:08,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:08" (1/1) ... [2022-01-10 04:14:08,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:14:08,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:14:08,855 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 04:14:08,866 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 04:14:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 04:14:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:14:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:14:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 04:14:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 04:14:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 04:14:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 04:14:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 04:14:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 04:14:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:14:08,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:14:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 04:14:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 04:14:09,071 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:14:09,077 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:14:09,087 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 04:14:20,491 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-01-10 04:14:20,491 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-01-10 04:14:20,491 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:14:20,496 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:14:20,496 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:14:20,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:14:20 BoogieIcfgContainer [2022-01-10 04:14:20,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:14:20,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:14:20,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:14:20,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:14:20,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:14:08" (1/3) ... [2022-01-10 04:14:20,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e7d40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:14:20, skipping insertion in model container [2022-01-10 04:14:20,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:08" (2/3) ... [2022-01-10 04:14:20,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e7d40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:14:20, skipping insertion in model container [2022-01-10 04:14:20,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:14:20" (3/3) ... [2022-01-10 04:14:20,503 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.13.i.cil-1.c [2022-01-10 04:14:20,507 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:14:20,507 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:14:20,536 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:14:20,540 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 04:14:20,540 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:14:20,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 0 states 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 04:14:20,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 04:14:20,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:20,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:20,556 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:20,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:20,559 INFO L85 PathProgramCache]: Analyzing trace with hash -442385417, now seen corresponding path program 1 times [2022-01-10 04:14:20,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:20,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852660161] [2022-01-10 04:14:20,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:20,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:20,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:20,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:20,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 04:14:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:21,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:14:21,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:21,635 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 04:14:21,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:21,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:21,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852660161] [2022-01-10 04:14:21,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852660161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:21,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:21,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:14:21,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097901438] [2022-01-10 04:14:21,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:21,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:14:21,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:21,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:14:21,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:21,659 INFO L87 Difference]: Start difference. First operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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 04:14:21,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:21,788 INFO L93 Difference]: Finished difference Result 427 states and 728 transitions. [2022-01-10 04:14:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:14:21,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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) Word has length 37 [2022-01-10 04:14:21,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:21,799 INFO L225 Difference]: With dead ends: 427 [2022-01-10 04:14:21,799 INFO L226 Difference]: Without dead ends: 261 [2022-01-10 04:14:21,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:21,806 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 201 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:21,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 461 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:14:21,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-01-10 04:14:21,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2022-01-10 04:14:21,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.5153846153846153) internal successors, (394), 260 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 04:14:21,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 394 transitions. [2022-01-10 04:14:21,860 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 394 transitions. Word has length 37 [2022-01-10 04:14:21,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:21,860 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 394 transitions. [2022-01-10 04:14:21,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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 04:14:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 394 transitions. [2022-01-10 04:14:21,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 04:14:21,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:21,863 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:21,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 04:14:22,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:14:22,088 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:22,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:22,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1297584632, now seen corresponding path program 1 times [2022-01-10 04:14:22,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:22,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123048721] [2022-01-10 04:14:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:22,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:22,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:22,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:22,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 04:14:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:22,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:14:22,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:14:23,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:23,129 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:23,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123048721] [2022-01-10 04:14:23,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123048721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:23,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:23,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:14:23,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708476819] [2022-01-10 04:14:23,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:23,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:14:23,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:23,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:14:23,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:23,131 INFO L87 Difference]: Start difference. First operand 261 states and 394 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 04:14:24,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:24,164 INFO L93 Difference]: Finished difference Result 510 states and 781 transitions. [2022-01-10 04:14:24,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:14:24,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) Word has length 54 [2022-01-10 04:14:24,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:24,166 INFO L225 Difference]: With dead ends: 510 [2022-01-10 04:14:24,166 INFO L226 Difference]: Without dead ends: 383 [2022-01-10 04:14:24,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:24,168 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 150 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:24,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 567 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 04:14:24,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-01-10 04:14:24,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2022-01-10 04:14:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.5052356020942408) internal successors, (575), 382 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 04:14:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 575 transitions. [2022-01-10 04:14:24,185 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 575 transitions. Word has length 54 [2022-01-10 04:14:24,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:24,185 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 575 transitions. [2022-01-10 04:14:24,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 04:14:24,185 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 575 transitions. [2022-01-10 04:14:24,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 04:14:24,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:24,205 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:24,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 04:14:24,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:14:24,407 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:24,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2072838766, now seen corresponding path program 1 times [2022-01-10 04:14:24,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:24,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292289292] [2022-01-10 04:14:24,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:24,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:24,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:24,410 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:24,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 04:14:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:25,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:14:25,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 04:14:25,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:25,481 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:25,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292289292] [2022-01-10 04:14:25,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292289292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:25,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:25,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:14:25,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399245964] [2022-01-10 04:14:25,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:25,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:14:25,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:25,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:14:25,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:25,483 INFO L87 Difference]: Start difference. First operand 383 states and 575 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 04:14:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:25,992 INFO L93 Difference]: Finished difference Result 754 states and 1144 transitions. [2022-01-10 04:14:25,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:14:25,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 76 [2022-01-10 04:14:25,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:25,994 INFO L225 Difference]: With dead ends: 754 [2022-01-10 04:14:25,994 INFO L226 Difference]: Without dead ends: 505 [2022-01-10 04:14:25,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:25,996 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 148 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:25,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 569 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 04:14:25,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-01-10 04:14:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2022-01-10 04:14:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.501984126984127) internal successors, (757), 504 states have internal predecessors, (757), 0 states have call successors, (0), 0 states 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 04:14:26,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 757 transitions. [2022-01-10 04:14:26,006 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 757 transitions. Word has length 76 [2022-01-10 04:14:26,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:26,006 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 757 transitions. [2022-01-10 04:14:26,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 04:14:26,007 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 757 transitions. [2022-01-10 04:14:26,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 04:14:26,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:26,010 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:26,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 04:14:26,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:14:26,227 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:26,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:26,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1458485308, now seen corresponding path program 1 times [2022-01-10 04:14:26,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:26,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514221522] [2022-01-10 04:14:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:26,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:26,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:26,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:26,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 04:14:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:27,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:14:27,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 04:14:27,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:27,358 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:27,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514221522] [2022-01-10 04:14:27,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514221522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:27,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:27,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:14:27,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507443909] [2022-01-10 04:14:27,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:27,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:14:27,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:27,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:14:27,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:27,360 INFO L87 Difference]: Start difference. First operand 505 states and 757 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 04:14:28,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:28,226 INFO L93 Difference]: Finished difference Result 1000 states and 1510 transitions. [2022-01-10 04:14:28,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:14:28,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 100 [2022-01-10 04:14:28,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:28,229 INFO L225 Difference]: With dead ends: 1000 [2022-01-10 04:14:28,229 INFO L226 Difference]: Without dead ends: 629 [2022-01-10 04:14:28,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:28,231 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 152 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:28,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 572 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:14:28,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-01-10 04:14:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2022-01-10 04:14:28,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 628 states have (on average 1.4984076433121019) internal successors, (941), 628 states have internal predecessors, (941), 0 states have call successors, (0), 0 states 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 04:14:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 941 transitions. [2022-01-10 04:14:28,240 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 941 transitions. Word has length 100 [2022-01-10 04:14:28,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:28,240 INFO L470 AbstractCegarLoop]: Abstraction has 629 states and 941 transitions. [2022-01-10 04:14:28,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 04:14:28,240 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 941 transitions. [2022-01-10 04:14:28,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 04:14:28,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:28,242 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:28,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 04:14:28,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:14:28,453 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:28,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:28,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1045011737, now seen corresponding path program 1 times [2022-01-10 04:14:28,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:28,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532185680] [2022-01-10 04:14:28,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:28,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:28,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:28,455 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:28,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 04:14:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:29,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:14:29,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 04:14:29,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:29,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:29,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532185680] [2022-01-10 04:14:29,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532185680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:29,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:29,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:14:29,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992300750] [2022-01-10 04:14:29,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:29,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:14:29,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:29,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:14:29,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:29,675 INFO L87 Difference]: Start difference. First operand 629 states and 941 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 04:14:30,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:30,013 INFO L93 Difference]: Finished difference Result 1246 states and 1875 transitions. [2022-01-10 04:14:30,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:14:30,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 117 [2022-01-10 04:14:30,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:30,016 INFO L225 Difference]: With dead ends: 1246 [2022-01-10 04:14:30,016 INFO L226 Difference]: Without dead ends: 751 [2022-01-10 04:14:30,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:30,017 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 149 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:30,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 569 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 04:14:30,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-01-10 04:14:30,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2022-01-10 04:14:30,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 1.496) internal successors, (1122), 750 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states 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 04:14:30,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1122 transitions. [2022-01-10 04:14:30,028 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1122 transitions. Word has length 117 [2022-01-10 04:14:30,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:30,029 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 1122 transitions. [2022-01-10 04:14:30,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 04:14:30,029 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1122 transitions. [2022-01-10 04:14:30,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 04:14:30,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:30,031 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:30,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 04:14:30,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:14:30,239 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:30,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:30,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1006485834, now seen corresponding path program 1 times [2022-01-10 04:14:30,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:30,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510616833] [2022-01-10 04:14:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:30,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:30,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:30,242 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:30,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 04:14:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:31,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:14:31,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:31,538 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-01-10 04:14:31,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:31,538 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:31,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510616833] [2022-01-10 04:14:31,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510616833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:31,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:31,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:14:31,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998212162] [2022-01-10 04:14:31,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:31,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:14:31,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:31,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:14:31,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:31,540 INFO L87 Difference]: Start difference. First operand 751 states and 1122 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 04:14:32,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:32,104 INFO L93 Difference]: Finished difference Result 1492 states and 2240 transitions. [2022-01-10 04:14:32,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:14:32,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 129 [2022-01-10 04:14:32,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:32,107 INFO L225 Difference]: With dead ends: 1492 [2022-01-10 04:14:32,108 INFO L226 Difference]: Without dead ends: 875 [2022-01-10 04:14:32,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:32,109 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 152 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:32,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 572 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 04:14:32,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-01-10 04:14:32,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 875. [2022-01-10 04:14:32,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 1.494279176201373) internal successors, (1306), 874 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states 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 04:14:32,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1306 transitions. [2022-01-10 04:14:32,121 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1306 transitions. Word has length 129 [2022-01-10 04:14:32,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:32,121 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1306 transitions. [2022-01-10 04:14:32,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 04:14:32,122 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1306 transitions. [2022-01-10 04:14:32,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 04:14:32,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:32,123 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:32,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 04:14:32,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:14:32,339 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:32,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:32,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1168401350, now seen corresponding path program 1 times [2022-01-10 04:14:32,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:32,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279972851] [2022-01-10 04:14:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:32,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:32,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:32,343 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:32,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 04:14:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:33,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:14:33,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:33,698 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-01-10 04:14:33,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:33,699 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:33,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279972851] [2022-01-10 04:14:33,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279972851] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:33,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:33,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:14:33,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523152169] [2022-01-10 04:14:33,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:33,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:14:33,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:33,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:14:33,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:33,700 INFO L87 Difference]: Start difference. First operand 875 states and 1306 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:14:34,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:34,376 INFO L93 Difference]: Finished difference Result 1739 states and 2606 transitions. [2022-01-10 04:14:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:14:34,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-10 04:14:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:34,386 INFO L225 Difference]: With dead ends: 1739 [2022-01-10 04:14:34,386 INFO L226 Difference]: Without dead ends: 998 [2022-01-10 04:14:34,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:34,388 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 150 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:34,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 572 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 04:14:34,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-01-10 04:14:34,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 998. [2022-01-10 04:14:34,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 997 states have (on average 1.493480441323972) internal successors, (1489), 997 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states 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 04:14:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1489 transitions. [2022-01-10 04:14:34,406 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1489 transitions. Word has length 160 [2022-01-10 04:14:34,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:34,406 INFO L470 AbstractCegarLoop]: Abstraction has 998 states and 1489 transitions. [2022-01-10 04:14:34,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:14:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1489 transitions. [2022-01-10 04:14:34,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 04:14:34,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:34,409 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:34,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 04:14:34,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:14:34,619 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:34,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:34,620 INFO L85 PathProgramCache]: Analyzing trace with hash -490932893, now seen corresponding path program 1 times [2022-01-10 04:14:34,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:34,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567611488] [2022-01-10 04:14:34,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:34,621 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:34,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:34,623 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:34,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 04:14:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:37,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-10 04:14:37,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:37,684 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 13 treesize of output 9 [2022-01-10 04:14:37,699 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 13 treesize of output 9 [2022-01-10 04:14:38,607 INFO L353 Elim1Store]: treesize reduction 1496, result has 4.7 percent of original size [2022-01-10 04:14:38,608 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 78 treesize of output 85 [2022-01-10 04:14:38,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:38,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 85 [2022-01-10 04:14:39,025 INFO L353 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2022-01-10 04:14:39,027 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2022-01-10 04:14:39,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:39,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:39,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:39,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:39,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:39,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:39,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:39,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:39,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:39,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:39,080 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2022-01-10 04:14:39,117 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 19 treesize of output 7 [2022-01-10 04:14:39,125 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 19 treesize of output 7 [2022-01-10 04:14:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-01-10 04:14:39,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:39,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:39,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567611488] [2022-01-10 04:14:39,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567611488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:39,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:39,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 04:14:39,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628053907] [2022-01-10 04:14:39,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:39,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:14:39,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:39,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:14:39,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:14:39,565 INFO L87 Difference]: Start difference. First operand 998 states and 1489 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 04:14:41,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:43,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:46,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:48,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:51,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:57,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:59,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:01,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:15:01,020 INFO L93 Difference]: Finished difference Result 1993 states and 2974 transitions. [2022-01-10 04:15:01,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 04:15:01,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 165 [2022-01-10 04:15:01,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:15:01,025 INFO L225 Difference]: With dead ends: 1993 [2022-01-10 04:15:01,025 INFO L226 Difference]: Without dead ends: 998 [2022-01-10 04:15:01,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:15:01,027 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:15:01,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 671 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 4 Unknown, 0 Unchecked, 21.3s Time] [2022-01-10 04:15:01,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-01-10 04:15:01,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 998. [2022-01-10 04:15:01,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 997 states have (on average 1.4924774322968908) internal successors, (1488), 997 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states 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 04:15:01,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1488 transitions. [2022-01-10 04:15:01,050 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1488 transitions. Word has length 165 [2022-01-10 04:15:01,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:15:01,050 INFO L470 AbstractCegarLoop]: Abstraction has 998 states and 1488 transitions. [2022-01-10 04:15:01,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 04:15:01,050 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1488 transitions. [2022-01-10 04:15:01,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 04:15:01,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:15:01,052 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:15:01,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 04:15:01,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:15:01,267 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:15:01,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:15:01,268 INFO L85 PathProgramCache]: Analyzing trace with hash 7623909, now seen corresponding path program 1 times [2022-01-10 04:15:01,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:15:01,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713684765] [2022-01-10 04:15:01,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:15:01,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:15:01,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:15:01,270 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:15:01,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 04:15:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:15:04,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:15:04,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:15:04,426 INFO L353 Elim1Store]: treesize reduction 180, result has 14.3 percent of original size [2022-01-10 04:15:04,426 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 3 case distinctions, treesize of input 29 treesize of output 39 [2022-01-10 04:15:04,661 INFO L353 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2022-01-10 04:15:04,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 51 [2022-01-10 04:15:04,808 INFO L353 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-01-10 04:15:04,808 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 15 [2022-01-10 04:15:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-10 04:15:05,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:15:05,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:15:05,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713684765] [2022-01-10 04:15:05,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713684765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:15:05,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:15:05,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:15:05,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775103096] [2022-01-10 04:15:05,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:15:05,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:15:05,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:15:05,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:15:05,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:15:05,132 INFO L87 Difference]: Start difference. First operand 998 states and 1488 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 04:15:07,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:09,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:13,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:15,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:17,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:19,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:15:19,550 INFO L93 Difference]: Finished difference Result 2358 states and 3520 transitions. [2022-01-10 04:15:19,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:15:19,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 165 [2022-01-10 04:15:19,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:15:19,557 INFO L225 Difference]: With dead ends: 2358 [2022-01-10 04:15:19,557 INFO L226 Difference]: Without dead ends: 1370 [2022-01-10 04:15:19,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:15:19,559 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 36 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:15:19,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 590 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 137 Invalid, 2 Unknown, 41 Unchecked, 14.4s Time] [2022-01-10 04:15:19,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2022-01-10 04:15:19,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1205. [2022-01-10 04:15:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 1204 states have (on average 1.5274086378737541) internal successors, (1839), 1204 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states 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 04:15:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1839 transitions. [2022-01-10 04:15:19,597 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1839 transitions. Word has length 165 [2022-01-10 04:15:19,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:15:19,598 INFO L470 AbstractCegarLoop]: Abstraction has 1205 states and 1839 transitions. [2022-01-10 04:15:19,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 04:15:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1839 transitions. [2022-01-10 04:15:19,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 04:15:19,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:15:19,600 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:15:19,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 04:15:19,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:15:19,815 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:15:19,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:15:19,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2042784989, now seen corresponding path program 1 times [2022-01-10 04:15:19,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:15:19,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723998216] [2022-01-10 04:15:19,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:15:19,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:15:19,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:15:19,820 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:15:19,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 04:15:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:15:22,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 04:15:22,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:15:22,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:15:22,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:15:22,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:15:22,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:15:22,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:15:22,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:15:23,199 INFO L353 Elim1Store]: treesize reduction 1109, result has 5.5 percent of original size [2022-01-10 04:15:23,200 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 7 case distinctions, treesize of input 52 treesize of output 73