/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.10.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:13:47,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:13:47,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:13:48,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:13:48,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:13:48,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:13:48,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:13:48,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:13:48,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:13:48,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:13:48,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:13:48,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:13:48,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:13:48,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:13:48,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:13:48,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:13:48,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:13:48,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:13:48,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:13:48,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:13:48,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:13:48,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:13:48,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:13:48,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:13:48,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 04:13:48,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 04:13:48,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 04:13:48,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 04:13:48,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 04:13:48,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 04:13:48,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 04:13:48,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 04:13:48,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 04:13:48,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 04:13:48,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 04:13:48,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 04:13:48,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 04:13:48,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 04:13:48,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:13:48,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:13:48,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:13:48,033 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 04:13:48,044 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:13:48,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:13:48,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:13:48,045 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:13:48,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:13:48,046 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:13:48,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:13:48,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:13:48,046 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:13:48,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:13:48,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:13:48,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:13:48,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:13:48,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:13:48,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:13:48,047 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:13:48,047 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:13:48,047 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:13:48,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:13:48,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:13:48,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:13:48,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:13:48,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:13:48,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:13:48,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:13:48,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:13:48,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:13:48,048 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:13:48,048 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:13:48,048 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:13:48,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:13:48,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:13:48,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:13:48,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:13:48,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:13:48,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:13:48,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:13:48,244 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:13:48,244 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:13:48,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_srvr.blast.10.i.cil-1.c [2022-01-10 04:13:48,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5199cf7/6089a425496a4365ba1d5832de0ab488/FLAG85f36f756 [2022-01-10 04:13:48,719 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:13:48,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.10.i.cil-1.c [2022-01-10 04:13:48,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5199cf7/6089a425496a4365ba1d5832de0ab488/FLAG85f36f756 [2022-01-10 04:13:49,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5199cf7/6089a425496a4365ba1d5832de0ab488 [2022-01-10 04:13:49,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:13:49,075 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:13:49,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:13:49,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:13:49,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:13:49,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:13:49" (1/1) ... [2022-01-10 04:13:49,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e7b67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:49, skipping insertion in model container [2022-01-10 04:13:49,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:13:49" (1/1) ... [2022-01-10 04:13:49,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:13:49,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:13:49,419 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.10.i.cil-1.c[73581,73594] [2022-01-10 04:13:49,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:13:49,451 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 04:13:49,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:13:49,545 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.10.i.cil-1.c[73581,73594] [2022-01-10 04:13:49,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:13:49,555 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:13:49,644 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.10.i.cil-1.c[73581,73594] [2022-01-10 04:13:49,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:13:49,661 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:13:49,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:49 WrapperNode [2022-01-10 04:13:49,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:13:49,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:13:49,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:13:49,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:13:49,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:49" (1/1) ... [2022-01-10 04:13:49,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:49" (1/1) ... [2022-01-10 04:13:49,740 INFO L137 Inliner]: procedures = 41, calls = 248, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 781 [2022-01-10 04:13:49,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:13:49,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:13:49,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:13:49,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:13:49,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:49" (1/1) ... [2022-01-10 04:13:49,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:49" (1/1) ... [2022-01-10 04:13:49,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:49" (1/1) ... [2022-01-10 04:13:49,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:49" (1/1) ... [2022-01-10 04:13:49,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:49" (1/1) ... [2022-01-10 04:13:49,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:49" (1/1) ... [2022-01-10 04:13:49,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:49" (1/1) ... [2022-01-10 04:13:49,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:13:49,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:13:49,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:13:49,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:13:49,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:49" (1/1) ... [2022-01-10 04:13:49,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:13:49,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:13:49,848 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 04:13:49,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 04:13:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 04:13:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:13:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:13:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 04:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 04:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 04:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 04:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 04:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 04:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:13:49,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 04:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 04:13:50,003 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:13:50,020 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:13:50,033 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 04:14:02,663 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-01-10 04:14:02,663 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-01-10 04:14:02,663 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:14:02,670 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:14:02,670 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:14:02,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:14:02 BoogieIcfgContainer [2022-01-10 04:14:02,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:14:02,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:14:02,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:14:02,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:14:02,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:13:49" (1/3) ... [2022-01-10 04:14:02,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15867002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:14:02, skipping insertion in model container [2022-01-10 04:14:02,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:49" (2/3) ... [2022-01-10 04:14:02,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15867002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:14:02, skipping insertion in model container [2022-01-10 04:14:02,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:14:02" (3/3) ... [2022-01-10 04:14:02,689 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.10.i.cil-1.c [2022-01-10 04:14:02,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:14:02,692 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:14:02,726 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:14:02,730 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 04:14:02,730 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:14:02,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.7123287671232876) internal successors, (250), 147 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 04:14:02,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 04:14:02,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:02,745 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] [2022-01-10 04:14:02,745 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:02,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:02,748 INFO L85 PathProgramCache]: Analyzing trace with hash 917223054, now seen corresponding path program 1 times [2022-01-10 04:14:02,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:02,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518668433] [2022-01-10 04:14:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:02,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:02,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:02,760 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:02,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 04:14:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:03,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:14:03,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:14:03,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:03,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:03,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518668433] [2022-01-10 04:14:03,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518668433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:03,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:03,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:14:03,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123163044] [2022-01-10 04:14:03,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:03,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:14:03,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:03,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:14:03,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:03,747 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.7123287671232876) internal successors, (250), 147 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) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 04:14:03,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:03,832 INFO L93 Difference]: Finished difference Result 421 states and 716 transitions. [2022-01-10 04:14:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:14:03,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2022-01-10 04:14:03,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:03,841 INFO L225 Difference]: With dead ends: 421 [2022-01-10 04:14:03,841 INFO L226 Difference]: Without dead ends: 257 [2022-01-10 04:14:03,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:03,845 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 192 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:03,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 459 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 04:14:03,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-01-10 04:14:03,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2022-01-10 04:14:03,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.515625) internal successors, (388), 256 states have internal predecessors, (388), 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 04:14:03,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 388 transitions. [2022-01-10 04:14:03,892 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 388 transitions. Word has length 44 [2022-01-10 04:14:03,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:03,892 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 388 transitions. [2022-01-10 04:14:03,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 04:14:03,893 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 388 transitions. [2022-01-10 04:14:03,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 04:14:03,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:03,895 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:03,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 04:14:04,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:14:04,106 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:04,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:04,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1577478009, now seen corresponding path program 1 times [2022-01-10 04:14:04,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:04,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050596504] [2022-01-10 04:14:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:04,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:04,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:04,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:04,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 04:14:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:04,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:14:04,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:05,148 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:14:05,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:05,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:05,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050596504] [2022-01-10 04:14:05,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050596504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:05,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:05,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:14:05,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667262538] [2022-01-10 04:14:05,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:05,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:14:05,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:05,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:14:05,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:05,151 INFO L87 Difference]: Start difference. First operand 257 states and 388 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 04:14:05,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:05,809 INFO L93 Difference]: Finished difference Result 502 states and 767 transitions. [2022-01-10 04:14:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:14:05,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2022-01-10 04:14:05,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:05,822 INFO L225 Difference]: With dead ends: 502 [2022-01-10 04:14:05,822 INFO L226 Difference]: Without dead ends: 377 [2022-01-10 04:14:05,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:05,823 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 141 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:05,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 563 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 04:14:05,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-01-10 04:14:05,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-01-10 04:14:05,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.5079787234042554) internal successors, (567), 376 states have internal predecessors, (567), 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 04:14:05,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 567 transitions. [2022-01-10 04:14:05,839 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 567 transitions. Word has length 61 [2022-01-10 04:14:05,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:05,840 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 567 transitions. [2022-01-10 04:14:05,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 04:14:05,840 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 567 transitions. [2022-01-10 04:14:05,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 04:14:05,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:05,843 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:05,881 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 04:14:06,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:14:06,044 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:06,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:06,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1942843215, now seen corresponding path program 1 times [2022-01-10 04:14:06,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:06,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566257552] [2022-01-10 04:14:06,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:06,045 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:06,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:06,052 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:06,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 04:14:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:06,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:14:06,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 04:14:07,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:07,212 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:07,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566257552] [2022-01-10 04:14:07,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566257552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:07,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:07,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:14:07,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349218253] [2022-01-10 04:14:07,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:07,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:14:07,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:07,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:14:07,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:07,214 INFO L87 Difference]: Start difference. First operand 377 states and 567 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 04:14:07,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:07,770 INFO L93 Difference]: Finished difference Result 742 states and 1125 transitions. [2022-01-10 04:14:07,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:14:07,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 83 [2022-01-10 04:14:07,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:07,773 INFO L225 Difference]: With dead ends: 742 [2022-01-10 04:14:07,773 INFO L226 Difference]: Without dead ends: 497 [2022-01-10 04:14:07,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:07,774 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 140 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:07,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 567 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 04:14:07,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-01-10 04:14:07,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2022-01-10 04:14:07,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.5060483870967742) internal successors, (747), 496 states have internal predecessors, (747), 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 04:14:07,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 747 transitions. [2022-01-10 04:14:07,799 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 747 transitions. Word has length 83 [2022-01-10 04:14:07,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:07,799 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 747 transitions. [2022-01-10 04:14:07,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 04:14:07,799 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 747 transitions. [2022-01-10 04:14:07,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 04:14:07,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:07,803 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:07,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 04:14:08,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:14:08,036 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:08,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:08,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1978647068, now seen corresponding path program 1 times [2022-01-10 04:14:08,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:08,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032071062] [2022-01-10 04:14:08,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:08,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:08,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:08,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:08,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 04:14:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:08,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:14:08,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:09,239 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 04:14:09,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:09,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:09,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032071062] [2022-01-10 04:14:09,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032071062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:09,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:09,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:14:09,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521574863] [2022-01-10 04:14:09,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:09,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:14:09,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:09,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:14:09,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:09,242 INFO L87 Difference]: Start difference. First operand 497 states and 747 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 04:14:10,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:10,049 INFO L93 Difference]: Finished difference Result 981 states and 1483 transitions. [2022-01-10 04:14:10,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:14:10,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 124 [2022-01-10 04:14:10,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:10,051 INFO L225 Difference]: With dead ends: 981 [2022-01-10 04:14:10,052 INFO L226 Difference]: Without dead ends: 616 [2022-01-10 04:14:10,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:10,053 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 139 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:10,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 565 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:14:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-01-10 04:14:10,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2022-01-10 04:14:10,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 1.5040650406504066) internal successors, (925), 615 states have internal predecessors, (925), 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 04:14:10,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 925 transitions. [2022-01-10 04:14:10,065 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 925 transitions. Word has length 124 [2022-01-10 04:14:10,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:10,066 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 925 transitions. [2022-01-10 04:14:10,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 04:14:10,066 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 925 transitions. [2022-01-10 04:14:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 04:14:10,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:10,069 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:10,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 04:14:10,295 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 04:14:10,296 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:10,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:10,296 INFO L85 PathProgramCache]: Analyzing trace with hash 153715343, now seen corresponding path program 1 times [2022-01-10 04:14:10,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:10,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399805553] [2022-01-10 04:14:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:10,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:10,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:10,301 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 04:14:10,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 04:14:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:11,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:14:11,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-01-10 04:14:11,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:11,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:11,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399805553] [2022-01-10 04:14:11,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399805553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:11,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:11,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:14:11,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581701086] [2022-01-10 04:14:11,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:11,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:14:11,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:11,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:14:11,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:11,682 INFO L87 Difference]: Start difference. First operand 616 states and 925 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 04:14:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:12,137 INFO L93 Difference]: Finished difference Result 1219 states and 1839 transitions. [2022-01-10 04:14:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:14:12,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 167 [2022-01-10 04:14:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:12,141 INFO L225 Difference]: With dead ends: 1219 [2022-01-10 04:14:12,141 INFO L226 Difference]: Without dead ends: 735 [2022-01-10 04:14:12,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:12,142 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 139 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:12,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 565 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 04:14:12,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-01-10 04:14:12,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2022-01-10 04:14:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 1.502724795640327) internal successors, (1103), 734 states have internal predecessors, (1103), 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 04:14:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1103 transitions. [2022-01-10 04:14:12,173 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1103 transitions. Word has length 167 [2022-01-10 04:14:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:12,174 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 1103 transitions. [2022-01-10 04:14:12,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 04:14:12,174 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1103 transitions. [2022-01-10 04:14:12,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-01-10 04:14:12,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:12,179 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-01-10 04:14:12,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 04:14:12,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:14:12,380 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:12,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:12,380 INFO L85 PathProgramCache]: Analyzing trace with hash -232920303, now seen corresponding path program 1 times [2022-01-10 04:14:12,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:12,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055360135] [2022-01-10 04:14:12,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:12,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:12,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:12,383 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:12,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 04:14:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:13,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:14:13,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-01-10 04:14:13,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:13,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:13,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055360135] [2022-01-10 04:14:13,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055360135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:13,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:13,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:14:13,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617157397] [2022-01-10 04:14:13,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:13,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:14:13,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:13,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:14:13,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:13,861 INFO L87 Difference]: Start difference. First operand 735 states and 1103 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 04:14:14,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:14,644 INFO L93 Difference]: Finished difference Result 1459 states and 2199 transitions. [2022-01-10 04:14:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:14:14,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 206 [2022-01-10 04:14:14,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:14,648 INFO L225 Difference]: With dead ends: 1459 [2022-01-10 04:14:14,648 INFO L226 Difference]: Without dead ends: 856 [2022-01-10 04:14:14,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:14,650 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 141 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:14,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 567 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:14:14,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2022-01-10 04:14:14,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 856. [2022-01-10 04:14:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 1.5017543859649123) internal successors, (1284), 855 states have internal predecessors, (1284), 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 04:14:14,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1284 transitions. [2022-01-10 04:14:14,664 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1284 transitions. Word has length 206 [2022-01-10 04:14:14,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:14,664 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 1284 transitions. [2022-01-10 04:14:14,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 04:14:14,665 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1284 transitions. [2022-01-10 04:14:14,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-01-10 04:14:14,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:14,667 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 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] [2022-01-10 04:14:14,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 04:14:14,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:14:14,883 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:14,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:14,884 INFO L85 PathProgramCache]: Analyzing trace with hash -677548966, now seen corresponding path program 1 times [2022-01-10 04:14:14,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:14,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471807969] [2022-01-10 04:14:14,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:14,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:14,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:14,886 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:14,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 04:14:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:16,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:14:16,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-01-10 04:14:16,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:16,572 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:16,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471807969] [2022-01-10 04:14:16,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471807969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:16,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:16,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:14:16,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305844851] [2022-01-10 04:14:16,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:16,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:14:16,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:16,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:14:16,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:16,573 INFO L87 Difference]: Start difference. First operand 856 states and 1284 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 04:14:17,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:17,439 INFO L93 Difference]: Finished difference Result 1700 states and 2559 transitions. [2022-01-10 04:14:17,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:14:17,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 248 [2022-01-10 04:14:17,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:17,447 INFO L225 Difference]: With dead ends: 1700 [2022-01-10 04:14:17,447 INFO L226 Difference]: Without dead ends: 976 [2022-01-10 04:14:17,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:14:17,449 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 140 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:17,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 565 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:14:17,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2022-01-10 04:14:17,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 976. [2022-01-10 04:14:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 1.5005128205128204) internal successors, (1463), 975 states have internal predecessors, (1463), 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 04:14:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1463 transitions. [2022-01-10 04:14:17,468 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1463 transitions. Word has length 248 [2022-01-10 04:14:17,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:17,468 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1463 transitions. [2022-01-10 04:14:17,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 04:14:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1463 transitions. [2022-01-10 04:14:17,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-01-10 04:14:17,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:17,471 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:17,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 04:14:17,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:14:17,699 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:17,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:17,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1549103668, now seen corresponding path program 1 times [2022-01-10 04:14:17,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:17,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762223920] [2022-01-10 04:14:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:17,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:17,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:17,726 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:17,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 04:14:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:20,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-10 04:14:20,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:20,512 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 04:14:20,540 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 04:14:21,431 INFO L353 Elim1Store]: treesize reduction 1496, result has 4.7 percent of original size [2022-01-10 04:14:21,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 78 treesize of output 85 [2022-01-10 04:14:21,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 85 [2022-01-10 04:14:21,824 INFO L353 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2022-01-10 04:14:21,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2022-01-10 04:14:21,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:21,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2022-01-10 04:14:21,898 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-10 04:14:21,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-10 04:14:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-01-10 04:14:22,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:22,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:22,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762223920] [2022-01-10 04:14:22,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762223920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:22,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:22,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 04:14:22,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235879643] [2022-01-10 04:14:22,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:22,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:14:22,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:22,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:14:22,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:14:22,588 INFO L87 Difference]: Start difference. First operand 976 states and 1463 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:14:24,667 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 04:14:26,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:32,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:38,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:39,819 WARN L534 Checker$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 04:14:42,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:43,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:43,921 INFO L93 Difference]: Finished difference Result 1949 states and 2922 transitions. [2022-01-10 04:14:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 04:14:43,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 292 [2022-01-10 04:14:43,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:43,927 INFO L225 Difference]: With dead ends: 1949 [2022-01-10 04:14:43,927 INFO L226 Difference]: Without dead ends: 976 [2022-01-10 04:14:43,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 288 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 04:14:43,928 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 7 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:43,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 655 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 3 Unknown, 0 Unchecked, 21.2s Time] [2022-01-10 04:14:43,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2022-01-10 04:14:43,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 976. [2022-01-10 04:14:43,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 1.4994871794871796) internal successors, (1462), 975 states have internal predecessors, (1462), 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 04:14:43,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1462 transitions. [2022-01-10 04:14:43,941 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1462 transitions. Word has length 292 [2022-01-10 04:14:43,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:43,941 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1462 transitions. [2022-01-10 04:14:43,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 04:14:43,941 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1462 transitions. [2022-01-10 04:14:43,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-01-10 04:14:43,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:43,944 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:43,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 04:14:44,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:14:44,158 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:44,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:44,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1801868810, now seen corresponding path program 1 times [2022-01-10 04:14:44,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:44,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724430356] [2022-01-10 04:14:44,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:44,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:44,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:44,161 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:44,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 04:14:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:46,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:14:46,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:47,189 INFO L353 Elim1Store]: treesize reduction 183, result has 13.3 percent of original size [2022-01-10 04:14:47,189 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 37 [2022-01-10 04:14:47,413 INFO L353 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2022-01-10 04:14:47,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2022-01-10 04:14:47,673 INFO L353 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-01-10 04:14:47,674 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 04:14:47,953 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2022-01-10 04:14:47,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:47,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:47,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724430356] [2022-01-10 04:14:47,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724430356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:47,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:47,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:14:47,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587237471] [2022-01-10 04:14:47,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:47,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:14:47,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:47,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:14:47,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:14:47,955 INFO L87 Difference]: Start difference. First operand 976 states and 1462 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 04:14:50,004 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 04:14:52,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:56,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:03,539 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 []