/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.06.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:12:45,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:12:45,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:12:45,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:12:45,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:12:45,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:12:45,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:12:45,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:12:45,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:12:45,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:12:45,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:12:45,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:12:45,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:12:45,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:12:45,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:12:45,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:12:45,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:12:45,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:12:45,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:12:45,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:12:45,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:12:45,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:12:45,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:12:45,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:12:45,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 04:12:45,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 04:12:45,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 04:12:45,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 04:12:45,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 04:12:45,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 04:12:45,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 04:12:45,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 04:12:45,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 04:12:45,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 04:12:45,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 04:12:45,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 04:12:45,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 04:12:45,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 04:12:45,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:12:45,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:12:45,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:12:45,644 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 04:12:45,656 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:12:45,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:12:45,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:12:45,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:12:45,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:12:45,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:12:45,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:12:45,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:12:45,658 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:12:45,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:12:45,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:12:45,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:12:45,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:12:45,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:12:45,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:12:45,659 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:12:45,659 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:12:45,659 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:12:45,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:12:45,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:12:45,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:12:45,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:12:45,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:12:45,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:12:45,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:12:45,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:12:45,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:12:45,660 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:12:45,660 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:12:45,661 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:12:45,661 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:12:45,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:12:45,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:12:45,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:12:45,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:12:45,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:12:45,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:12:45,853 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:12:45,853 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:12:45,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_srvr.blast.06.i.cil-1.c [2022-01-10 04:12:45,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb004e11/7de100d2caa649ec879ed9483472f637/FLAGa564d0760 [2022-01-10 04:12:46,306 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:12:46,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.06.i.cil-1.c [2022-01-10 04:12:46,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb004e11/7de100d2caa649ec879ed9483472f637/FLAGa564d0760 [2022-01-10 04:12:46,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb004e11/7de100d2caa649ec879ed9483472f637 [2022-01-10 04:12:46,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:12:46,630 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:12:46,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:12:46,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:12:46,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:12:46,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:12:46" (1/1) ... [2022-01-10 04:12:46,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cd3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:46, skipping insertion in model container [2022-01-10 04:12:46,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:12:46" (1/1) ... [2022-01-10 04:12:46,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:12:46,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:12:47,031 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.06.i.cil-1.c[78520,78533] [2022-01-10 04:12:47,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:12:47,046 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 04:12:47,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:12:47,129 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.06.i.cil-1.c[78520,78533] [2022-01-10 04:12:47,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:12:47,134 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:12:47,213 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.06.i.cil-1.c[78520,78533] [2022-01-10 04:12:47,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:12:47,234 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:12:47,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:47 WrapperNode [2022-01-10 04:12:47,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:12:47,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:12:47,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:12:47,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:12:47,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:47" (1/1) ... [2022-01-10 04:12:47,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:47" (1/1) ... [2022-01-10 04:12:47,313 INFO L137 Inliner]: procedures = 41, calls = 248, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 808 [2022-01-10 04:12:47,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:12:47,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:12:47,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:12:47,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:12:47,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:47" (1/1) ... [2022-01-10 04:12:47,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:47" (1/1) ... [2022-01-10 04:12:47,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:47" (1/1) ... [2022-01-10 04:12:47,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:47" (1/1) ... [2022-01-10 04:12:47,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:47" (1/1) ... [2022-01-10 04:12:47,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:47" (1/1) ... [2022-01-10 04:12:47,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:47" (1/1) ... [2022-01-10 04:12:47,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:12:47,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:12:47,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:12:47,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:12:47,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:47" (1/1) ... [2022-01-10 04:12:47,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:12:47,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:12:47,424 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 04:12:47,427 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 04:12:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 04:12:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:12:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:12:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 04:12:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 04:12:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 04:12:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 04:12:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 04:12:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 04:12:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:12:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:12:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 04:12:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 04:12:47,610 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:12:47,611 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:12:47,628 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 04:13:00,059 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-01-10 04:13:00,059 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-01-10 04:13:00,059 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:13:00,065 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:13:00,065 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:13:00,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:13:00 BoogieIcfgContainer [2022-01-10 04:13:00,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:13:00,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:13:00,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:13:00,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:13:00,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:12:46" (1/3) ... [2022-01-10 04:13:00,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454c9572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:13:00, skipping insertion in model container [2022-01-10 04:13:00,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:47" (2/3) ... [2022-01-10 04:13:00,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454c9572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:13:00, skipping insertion in model container [2022-01-10 04:13:00,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:13:00" (3/3) ... [2022-01-10 04:13:00,072 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.06.i.cil-1.c [2022-01-10 04:13:00,076 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:13:00,076 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:13:00,109 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:13:00,114 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 04:13:00,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:13:00,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 159 states have (on average 1.7358490566037736) internal successors, (276), 160 states have internal predecessors, (276), 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 04:13:00,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 04:13:00,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:13:00,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:13:00,133 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:13:00,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:13:00,138 INFO L85 PathProgramCache]: Analyzing trace with hash -2069453275, now seen corresponding path program 1 times [2022-01-10 04:13:00,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:13:00,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604456288] [2022-01-10 04:13:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:13:00,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:13:00,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:13:00,152 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 04:13:00,171 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 04:13:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:13:01,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-10 04:13:01,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:13:01,950 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 04:13:01,969 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 04:13:02,925 INFO L353 Elim1Store]: treesize reduction 1496, result has 4.7 percent of original size [2022-01-10 04:13:02,925 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 04:13:02,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:02,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,050 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 04:13:03,332 INFO L353 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2022-01-10 04:13:03,332 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 04:13:03,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,399 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 04:13:03,447 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 04:13:03,453 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 04:13:03,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:13:03,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:13:03,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:13:03,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604456288] [2022-01-10 04:13:03,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604456288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:13:03,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:13:03,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 04:13:03,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264697223] [2022-01-10 04:13:03,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:13:03,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:13:03,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:13:03,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:13:03,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:13:03,626 INFO L87 Difference]: Start difference. First operand has 161 states, 159 states have (on average 1.7358490566037736) internal successors, (276), 160 states have internal predecessors, (276), 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 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 04:13:05,689 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 04:13:07,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:09,066 WARN L534 Checker$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 04:13:14,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:19,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:22,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:25,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:13:25,877 INFO L93 Difference]: Finished difference Result 323 states and 551 transitions. [2022-01-10 04:13:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 04:13:25,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 46 [2022-01-10 04:13:25,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:13:25,890 INFO L225 Difference]: With dead ends: 323 [2022-01-10 04:13:25,890 INFO L226 Difference]: Without dead ends: 148 [2022-01-10 04:13:25,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 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 04:13:25,894 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 10 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:13:25,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 913 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 2 Unknown, 0 Unchecked, 22.1s Time] [2022-01-10 04:13:25,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-01-10 04:13:25,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-01-10 04:13:25,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.5714285714285714) internal successors, (231), 147 states have internal predecessors, (231), 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 04:13:25,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 231 transitions. [2022-01-10 04:13:25,937 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 231 transitions. Word has length 46 [2022-01-10 04:13:25,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:13:25,937 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 231 transitions. [2022-01-10 04:13:25,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 04:13:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 231 transitions. [2022-01-10 04:13:25,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 04:13:25,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:13:25,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:13:25,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 04:13:26,171 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 04:13:26,172 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:13:26,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:13:26,172 INFO L85 PathProgramCache]: Analyzing trace with hash 176126179, now seen corresponding path program 1 times [2022-01-10 04:13:26,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:13:26,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960368514] [2022-01-10 04:13:26,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:13:26,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:13:26,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:13:26,174 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 04:13:26,176 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 04:13:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:13:27,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 04:13:27,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:13:27,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:27,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:27,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:27,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:27,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:27,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:13:28,444 INFO L353 Elim1Store]: treesize reduction 1124, result has 5.4 percent of original size [2022-01-10 04:13:28,445 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 72 treesize of output 74 [2022-01-10 04:13:29,076 INFO L353 Elim1Store]: treesize reduction 825, result has 7.2 percent of original size [2022-01-10 04:13:29,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 66 treesize of output 86 [2022-01-10 04:13:29,556 INFO L353 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-01-10 04:13:29,556 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 71 treesize of output 23 [2022-01-10 04:13:29,673 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 04:13:29,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:13:29,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:13:29,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960368514] [2022-01-10 04:13:29,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960368514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:13:29,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:13:29,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:13:29,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415742259] [2022-01-10 04:13:29,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:13:29,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:13:29,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:13:29,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:13:29,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:13:29,682 INFO L87 Difference]: Start difference. First operand 148 states and 231 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 04:13:31,738 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 04:13:34,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:40,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:42,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:13:42,384 INFO L93 Difference]: Finished difference Result 314 states and 490 transitions. [2022-01-10 04:13:42,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:13:42,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 46 [2022-01-10 04:13:42,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:13:42,389 INFO L225 Difference]: With dead ends: 314 [2022-01-10 04:13:42,389 INFO L226 Difference]: Without dead ends: 176 [2022-01-10 04:13:42,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:13:42,390 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 22 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:13:42,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 533 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 146 Invalid, 2 Unknown, 0 Unchecked, 12.6s Time] [2022-01-10 04:13:42,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-01-10 04:13:42,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 159. [2022-01-10 04:13:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.5822784810126582) internal successors, (250), 158 states have internal predecessors, (250), 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 04:13:42,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 250 transitions. [2022-01-10 04:13:42,398 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 250 transitions. Word has length 46 [2022-01-10 04:13:42,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:13:42,399 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 250 transitions. [2022-01-10 04:13:42,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 04:13:42,399 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 250 transitions. [2022-01-10 04:13:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 04:13:42,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:13:42,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:13:42,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 04:13:42,603 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 04:13:42,604 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:13:42,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:13:42,605 INFO L85 PathProgramCache]: Analyzing trace with hash 755663040, now seen corresponding path program 1 times [2022-01-10 04:13:42,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:13:42,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50899361] [2022-01-10 04:13:42,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:13:42,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:13:42,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:13:42,607 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 04:13:42,608 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 04:13:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:13:44,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:13:44,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:13:45,196 INFO L353 Elim1Store]: treesize reduction 1104, result has 5.5 percent of original size [2022-01-10 04:13:45,196 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 7 case distinctions, treesize of input 69 treesize of output 73 [2022-01-10 04:13:45,462 INFO L353 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2022-01-10 04:13:45,463 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 04:13:45,550 INFO L353 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-01-10 04:13:45,550 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 43 treesize of output 13 [2022-01-10 04:13:45,714 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 04:13:45,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:13:45,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:13:45,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50899361] [2022-01-10 04:13:45,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50899361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:13:45,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:13:45,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:13:45,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131873748] [2022-01-10 04:13:45,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:13:45,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:13:45,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:13:45,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:13:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:13:45,716 INFO L87 Difference]: Start difference. First operand 159 states and 250 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 04:13:47,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:49,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:53,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:55,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:56,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:13:56,097 INFO L93 Difference]: Finished difference Result 308 states and 482 transitions. [2022-01-10 04:13:56,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:13:56,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2022-01-10 04:13:56,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:13:56,101 INFO L225 Difference]: With dead ends: 308 [2022-01-10 04:13:56,101 INFO L226 Difference]: Without dead ends: 170 [2022-01-10 04:13:56,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 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 04:13:56,102 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 17 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:13:56,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 562 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 2 Unknown, 20 Unchecked, 10.3s Time] [2022-01-10 04:13:56,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-01-10 04:13:56,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 159. [2022-01-10 04:13:56,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.5759493670886076) internal successors, (249), 158 states have internal predecessors, (249), 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 04:13:56,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 249 transitions. [2022-01-10 04:13:56,114 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 249 transitions. Word has length 59 [2022-01-10 04:13:56,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:13:56,114 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 249 transitions. [2022-01-10 04:13:56,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 04:13:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 249 transitions. [2022-01-10 04:13:56,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 04:13:56,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:13:56,116 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 04:13:56,164 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 04:13:56,323 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 04:13:56,325 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:13:56,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:13:56,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1854767371, now seen corresponding path program 1 times [2022-01-10 04:13:56,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:13:56,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912888031] [2022-01-10 04:13:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:13:56,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:13:56,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:13:56,328 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 04:13:56,328 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 04:13:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:13:58,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:13:58,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:13:58,583 INFO L353 Elim1Store]: treesize reduction 1105, result has 5.5 percent of original size [2022-01-10 04:13:58,583 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 7 case distinctions, treesize of input 69 treesize of output 73 [2022-01-10 04:13:58,847 INFO L353 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2022-01-10 04:13:58,847 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 04:13:58,904 INFO L353 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-01-10 04:13:58,905 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 43 treesize of output 13 [2022-01-10 04:13:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:13:59,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:13:59,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:13:59,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912888031] [2022-01-10 04:13:59,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912888031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:13:59,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:13:59,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:13:59,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454591645] [2022-01-10 04:13:59,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:13:59,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:13:59,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:13:59,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:13:59,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:13:59,073 INFO L87 Difference]: Start difference. First operand 159 states and 249 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 04:14:01,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:03,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:03,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:03,736 INFO L93 Difference]: Finished difference Result 309 states and 485 transitions. [2022-01-10 04:14:03,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:14:03,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2022-01-10 04:14:03,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:03,740 INFO L225 Difference]: With dead ends: 309 [2022-01-10 04:14:03,741 INFO L226 Difference]: Without dead ends: 171 [2022-01-10 04:14:03,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 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 04:14:03,743 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 18 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:03,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 564 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 87 Invalid, 1 Unknown, 15 Unchecked, 4.6s Time] [2022-01-10 04:14:03,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-01-10 04:14:03,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-01-10 04:14:03,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.5588235294117647) internal successors, (265), 170 states have internal predecessors, (265), 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 04:14:03,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 265 transitions. [2022-01-10 04:14:03,757 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 265 transitions. Word has length 60 [2022-01-10 04:14:03,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:03,758 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 265 transitions. [2022-01-10 04:14:03,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 04:14:03,758 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 265 transitions. [2022-01-10 04:14:03,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 04:14:03,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:03,759 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:03,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 04:14:03,973 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 04:14:03,973 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:03,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:03,973 INFO L85 PathProgramCache]: Analyzing trace with hash 219231991, now seen corresponding path program 1 times [2022-01-10 04:14:03,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:03,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517440269] [2022-01-10 04:14:03,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:03,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:03,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:03,975 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 04:14:03,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process