/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_clnt.blast.01.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:11:39,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:11:39,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:11:39,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:11:39,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:11:39,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:11:39,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:11:39,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:11:39,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:11:39,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:11:39,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:11:39,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:11:39,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:11:39,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:11:39,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:11:39,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:11:39,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:11:39,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:11:39,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:11:39,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:11:39,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:11:39,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:11:39,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:11:39,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:11:39,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 04:11:39,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 04:11:39,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 04:11:39,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 04:11:39,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 04:11:39,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 04:11:39,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 04:11:39,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 04:11:39,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 04:11:39,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 04:11:39,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 04:11:39,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 04:11:39,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 04:11:39,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 04:11:39,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:11:39,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:11:39,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:11:39,492 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 04:11:39,517 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:11:39,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:11:39,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:11:39,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:11:39,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:11:39,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:11:39,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:11:39,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:11:39,518 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:11:39,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:11:39,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:11:39,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:11:39,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:11:39,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:11:39,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:11:39,519 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:11:39,519 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:11:39,519 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:11:39,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:11:39,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:11:39,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:11:39,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:11:39,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:11:39,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:11:39,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:11:39,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:11:39,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:11:39,520 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:11:39,520 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:11:39,520 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:11:39,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:11:39,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:11:39,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:11:39,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:11:39,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:11:39,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:11:39,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:11:39,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:11:39,710 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:11:39,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_clnt.blast.01.i.cil-2.c [2022-01-10 04:11:39,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/befd68709/77647df3209d4fd0b7f8de5f7ec57b06/FLAG311927d6d [2022-01-10 04:11:40,183 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:11:40,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_clnt.blast.01.i.cil-2.c [2022-01-10 04:11:40,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/befd68709/77647df3209d4fd0b7f8de5f7ec57b06/FLAG311927d6d [2022-01-10 04:11:40,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/befd68709/77647df3209d4fd0b7f8de5f7ec57b06 [2022-01-10 04:11:40,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:11:40,513 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:11:40,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:11:40,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:11:40,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:11:40,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:11:40" (1/1) ... [2022-01-10 04:11:40,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ba022a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:11:40, skipping insertion in model container [2022-01-10 04:11:40,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:11:40" (1/1) ... [2022-01-10 04:11:40,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:11:40,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:11:40,830 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_clnt.blast.01.i.cil-2.c[65520,65533] [2022-01-10 04:11:40,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:11:40,847 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 04:11:40,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:11:40,902 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_clnt.blast.01.i.cil-2.c[65520,65533] [2022-01-10 04:11:40,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:11:40,908 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:11:40,970 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_clnt.blast.01.i.cil-2.c[65520,65533] [2022-01-10 04:11:40,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:11:40,983 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:11:40,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:11:40 WrapperNode [2022-01-10 04:11:40,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:11:40,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:11:40,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:11:40,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:11:40,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:11:40" (1/1) ... [2022-01-10 04:11:41,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:11:40" (1/1) ... [2022-01-10 04:11:41,043 INFO L137 Inliner]: procedures = 41, calls = 242, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 717 [2022-01-10 04:11:41,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:11:41,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:11:41,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:11:41,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:11:41,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:11:40" (1/1) ... [2022-01-10 04:11:41,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:11:40" (1/1) ... [2022-01-10 04:11:41,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:11:40" (1/1) ... [2022-01-10 04:11:41,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:11:40" (1/1) ... [2022-01-10 04:11:41,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:11:40" (1/1) ... [2022-01-10 04:11:41,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:11:40" (1/1) ... [2022-01-10 04:11:41,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:11:40" (1/1) ... [2022-01-10 04:11:41,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:11:41,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:11:41,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:11:41,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:11:41,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:11:40" (1/1) ... [2022-01-10 04:11:41,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:11:41,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:11:41,138 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 04:11:41,156 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 04:11:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 04:11:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:11:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:11:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 04:11:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 04:11:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 04:11:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 04:11:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 04:11:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 04:11:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:11:41,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:11:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 04:11:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 04:11:41,257 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:11:41,258 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:11:41,273 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 04:11:53,089 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2022-01-10 04:11:53,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2022-01-10 04:11:53,090 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:11:53,095 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:11:53,095 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:11:53,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:11:53 BoogieIcfgContainer [2022-01-10 04:11:53,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:11:53,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:11:53,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:11:53,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:11:53,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:11:40" (1/3) ... [2022-01-10 04:11:53,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6fea32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:11:53, skipping insertion in model container [2022-01-10 04:11:53,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:11:40" (2/3) ... [2022-01-10 04:11:53,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6fea32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:11:53, skipping insertion in model container [2022-01-10 04:11:53,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:11:53" (3/3) ... [2022-01-10 04:11:53,103 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.01.i.cil-2.c [2022-01-10 04:11:53,111 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:11:53,111 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:11:53,148 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:11:53,153 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 04:11:53,153 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:11:53,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 0 states have call successors, (0), 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 04:11:53,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 04:11:53,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:11:53,172 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] [2022-01-10 04:11:53,173 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:11:53,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:11:53,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1457703967, now seen corresponding path program 1 times [2022-01-10 04:11:53,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:11:53,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198455179] [2022-01-10 04:11:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:11:53,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:11:53,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:11:53,194 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 04:11:53,195 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 04:11:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:11:54,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:11:54,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:11:55,157 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 04:11:55,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:11:55,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:11:55,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198455179] [2022-01-10 04:11:55,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198455179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:11:55,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:11:55,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:11:55,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247146409] [2022-01-10 04:11:55,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:11:55,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:11:55,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:11:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:11:55,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:11:55,189 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 0 states have call successors, (0), 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 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 04:11:55,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:11:55,322 INFO L93 Difference]: Finished difference Result 375 states and 626 transitions. [2022-01-10 04:11:55,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:11:55,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-01-10 04:11:55,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:11:55,331 INFO L225 Difference]: With dead ends: 375 [2022-01-10 04:11:55,331 INFO L226 Difference]: Without dead ends: 217 [2022-01-10 04:11:55,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 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 04:11:55,336 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 181 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:11:55,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 402 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:11:55,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-01-10 04:11:55,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-01-10 04:11:55,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.4861111111111112) internal successors, (321), 216 states have internal predecessors, (321), 0 states have call successors, (0), 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 04:11:55,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 321 transitions. [2022-01-10 04:11:55,373 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 321 transitions. Word has length 24 [2022-01-10 04:11:55,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:11:55,373 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 321 transitions. [2022-01-10 04:11:55,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 04:11:55,374 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 321 transitions. [2022-01-10 04:11:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 04:11:55,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:11:55,375 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 04:11:55,447 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 04:11:55,595 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 04:11:55,596 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:11:55,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:11:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash 546953675, now seen corresponding path program 1 times [2022-01-10 04:11:55,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:11:55,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813666355] [2022-01-10 04:11:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:11:55,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:11:55,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:11:55,599 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 04:11:55,600 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 04:11:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:11:57,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 2017 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:11:57,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:11:57,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:11:57,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:11:57,613 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:11:57,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813666355] [2022-01-10 04:11:57,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813666355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:11:57,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:11:57,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:11:57,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250631922] [2022-01-10 04:11:57,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:11:57,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:11:57,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:11:57,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:11:57,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:11:57,615 INFO L87 Difference]: Start difference. First operand 217 states and 321 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:11:59,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:11:59,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:11:59,774 INFO L93 Difference]: Finished difference Result 426 states and 636 transitions. [2022-01-10 04:11:59,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:11:59,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-10 04:11:59,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:11:59,777 INFO L225 Difference]: With dead ends: 426 [2022-01-10 04:11:59,777 INFO L226 Difference]: Without dead ends: 319 [2022-01-10 04:11:59,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 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 04:11:59,778 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 126 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:11:59,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 467 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 04:11:59,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-01-10 04:11:59,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2022-01-10 04:11:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.4779874213836477) internal successors, (470), 318 states have internal predecessors, (470), 0 states have call successors, (0), 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 04:11:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 470 transitions. [2022-01-10 04:11:59,808 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 470 transitions. Word has length 39 [2022-01-10 04:11:59,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:11:59,808 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 470 transitions. [2022-01-10 04:11:59,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:11:59,809 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 470 transitions. [2022-01-10 04:11:59,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 04:11:59,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:11:59,811 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 04:11:59,881 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 04:12:00,039 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 04:12:00,040 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:12:00,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:12:00,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1711683715, now seen corresponding path program 1 times [2022-01-10 04:12:00,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:12:00,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104800906] [2022-01-10 04:12:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:12:00,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:12:00,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:12:00,042 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 04:12:00,044 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 04:12:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:12:02,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 2082 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:12:02,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:12:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 04:12:02,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:12:02,277 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:12:02,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104800906] [2022-01-10 04:12:02,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104800906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:12:02,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:12:02,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:12:02,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275822182] [2022-01-10 04:12:02,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:12:02,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:12:02,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:12:02,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:12:02,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:12:02,284 INFO L87 Difference]: Start difference. First operand 319 states and 470 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 04:12:04,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:12:04,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:12:04,453 INFO L93 Difference]: Finished difference Result 632 states and 937 transitions. [2022-01-10 04:12:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:12:04,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 57 [2022-01-10 04:12:04,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:12:04,456 INFO L225 Difference]: With dead ends: 632 [2022-01-10 04:12:04,456 INFO L226 Difference]: Without dead ends: 423 [2022-01-10 04:12:04,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 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 04:12:04,458 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 128 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:12:04,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 474 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 04:12:04,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-01-10 04:12:04,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2022-01-10 04:12:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 1.4739336492890995) internal successors, (622), 422 states have internal predecessors, (622), 0 states have call successors, (0), 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 04:12:04,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 622 transitions. [2022-01-10 04:12:04,485 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 622 transitions. Word has length 57 [2022-01-10 04:12:04,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:12:04,485 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 622 transitions. [2022-01-10 04:12:04,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 04:12:04,485 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 622 transitions. [2022-01-10 04:12:04,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 04:12:04,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:12:04,488 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2022-01-10 04:12:04,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 04:12:04,695 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 04:12:04,696 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:12:04,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:12:04,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1922596163, now seen corresponding path program 1 times [2022-01-10 04:12:04,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:12:04,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749367437] [2022-01-10 04:12:04,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:12:04,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:12:04,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:12:04,700 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 04:12:04,703 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 04:12:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:12:06,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 2153 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:12:06,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:12:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-10 04:12:07,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:12:07,067 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:12:07,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749367437] [2022-01-10 04:12:07,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749367437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:12:07,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:12:07,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:12:07,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000864474] [2022-01-10 04:12:07,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:12:07,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:12:07,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:12:07,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:12:07,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:12:07,069 INFO L87 Difference]: Start difference. First operand 423 states and 622 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 04:12:09,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:12:09,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:12:09,205 INFO L93 Difference]: Finished difference Result 839 states and 1240 transitions. [2022-01-10 04:12:09,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:12:09,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 77 [2022-01-10 04:12:09,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:12:09,207 INFO L225 Difference]: With dead ends: 839 [2022-01-10 04:12:09,207 INFO L226 Difference]: Without dead ends: 526 [2022-01-10 04:12:09,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 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 04:12:09,209 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 128 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:12:09,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 473 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 04:12:09,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2022-01-10 04:12:09,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2022-01-10 04:12:09,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.4723809523809523) internal successors, (773), 525 states have internal predecessors, (773), 0 states have call successors, (0), 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 04:12:09,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 773 transitions. [2022-01-10 04:12:09,229 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 773 transitions. Word has length 77 [2022-01-10 04:12:09,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:12:09,229 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 773 transitions. [2022-01-10 04:12:09,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 04:12:09,229 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 773 transitions. [2022-01-10 04:12:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 04:12:09,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:12:09,234 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2022-01-10 04:12:09,317 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 04:12:09,439 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 04:12:09,440 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:12:09,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:12:09,440 INFO L85 PathProgramCache]: Analyzing trace with hash -158208422, now seen corresponding path program 1 times [2022-01-10 04:12:09,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:12:09,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551026880] [2022-01-10 04:12:09,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:12:09,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:12:09,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:12:09,442 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 04:12:09,443 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 04:12:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:12:11,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:12:11,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:12:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-01-10 04:12:11,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:12:11,900 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:12:11,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551026880] [2022-01-10 04:12:11,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551026880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:12:11,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:12:11,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:12:11,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856516963] [2022-01-10 04:12:11,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:12:11,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:12:11,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:12:11,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:12:11,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:12:11,901 INFO L87 Difference]: Start difference. First operand 526 states and 773 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 04:12:13,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:12:14,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:12:14,074 INFO L93 Difference]: Finished difference Result 939 states and 1381 transitions. [2022-01-10 04:12:14,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:12:14,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 98 [2022-01-10 04:12:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:12:14,076 INFO L225 Difference]: With dead ends: 939 [2022-01-10 04:12:14,076 INFO L226 Difference]: Without dead ends: 523 [2022-01-10 04:12:14,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 96 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 04:12:14,077 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 128 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:12:14,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 469 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 04:12:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-01-10 04:12:14,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2022-01-10 04:12:14,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 522 states have (on average 1.4616858237547892) internal successors, (763), 522 states have internal predecessors, (763), 0 states have call successors, (0), 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 04:12:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 763 transitions. [2022-01-10 04:12:14,085 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 763 transitions. Word has length 98 [2022-01-10 04:12:14,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:12:14,085 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 763 transitions. [2022-01-10 04:12:14,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 04:12:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 763 transitions. [2022-01-10 04:12:14,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 04:12:14,086 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:12:14,087 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2022-01-10 04:12:14,170 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 04:12:14,287 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 04:12:14,287 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:12:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:12:14,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1855651051, now seen corresponding path program 1 times [2022-01-10 04:12:14,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:12:14,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899994169] [2022-01-10 04:12:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:12:14,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:12:14,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:12:14,290 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 04:12:14,291 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 04:12:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:12:18,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 2228 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 04:12:18,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:12:20,669 INFO L353 Elim1Store]: treesize reduction 32, result has 78.5 percent of original size [2022-01-10 04:12:20,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 1433 treesize of output 1065 [2022-01-10 04:12:23,858 INFO L353 Elim1Store]: treesize reduction 1374, result has 25.4 percent of original size [2022-01-10 04:12:23,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 9 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 10 new quantified variables, introduced 18 case distinctions, treesize of input 2954 treesize of output 1674 [2022-01-10 04:12:23,918 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 1623 treesize of output 1485 [2022-01-10 04:12:23,989 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 1464 treesize of output 1068 [2022-01-10 04:12:24,347 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:12:24,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 997 treesize of output 905 [2022-01-10 04:12:24,681 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:12:24,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 719 treesize of output 671 [2022-01-10 04:12:24,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:24,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:25,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:25,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:25,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:25,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:25,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:25,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:25,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:25,412 INFO L244 Elim1Store]: Index analysis took 631 ms [2022-01-10 04:12:25,969 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 31 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 87 [2022-01-10 04:12:26,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:26,756 INFO L244 Elim1Store]: Index analysis took 662 ms [2022-01-10 04:12:27,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 31 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 111 [2022-01-10 04:12:27,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 121 [2022-01-10 04:12:27,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 113 [2022-01-10 04:12:27,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:27,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:12:28,244 INFO L244 Elim1Store]: Index analysis took 655 ms [2022-01-10 04:12:28,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 31 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 111