/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.02.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:12:38,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:12:38,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:12:38,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:12:38,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:12:38,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:12:38,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:12:38,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:12:38,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:12:38,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:12:38,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:12:38,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:12:38,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:12:38,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:12:38,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:12:38,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:12:38,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:12:38,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:12:38,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:12:38,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:12:38,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:12:38,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:12:38,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:12:38,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:12:38,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 04:12:38,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 04:12:38,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 04:12:38,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 04:12:38,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 04:12:38,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 04:12:38,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 04:12:38,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 04:12:38,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 04:12:38,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 04:12:38,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 04:12:38,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 04:12:38,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 04:12:38,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 04:12:38,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:12:38,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:12:38,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:12:38,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 04:12:38,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:12:38,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:12:38,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:12:38,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:12:38,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:12:38,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:12:38,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:12:38,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:12:38,626 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:12:38,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:12:38,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:12:38,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:12:38,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:12:38,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:12:38,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:12:38,627 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:12:38,627 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:12:38,627 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:12:38,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:12:38,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:12:38,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:12:38,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:12:38,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:12:38,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:12:38,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:12:38,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:12:38,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:12:38,640 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:12:38,640 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:12:38,640 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:12:38,640 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:12:38,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:12:38,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:12:38,641 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:12:38,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:12:38,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:12:38,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:12:38,865 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:12:38,865 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:12:38,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_srvr.blast.02.i.cil-2.c [2022-01-10 04:12:38,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff86148e6/d663514b3c3d4004bc6fdd4c6579d056/FLAG21c32ef0c [2022-01-10 04:12:39,344 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:12:39,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.02.i.cil-2.c [2022-01-10 04:12:39,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff86148e6/d663514b3c3d4004bc6fdd4c6579d056/FLAG21c32ef0c [2022-01-10 04:12:39,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff86148e6/d663514b3c3d4004bc6fdd4c6579d056 [2022-01-10 04:12:39,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:12:39,370 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:12:39,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:12:39,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:12:39,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:12:39,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:12:39" (1/1) ... [2022-01-10 04:12:39,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bfb1e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:39, skipping insertion in model container [2022-01-10 04:12:39,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:12:39" (1/1) ... [2022-01-10 04:12:39,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:12:39,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:12:39,781 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.02.i.cil-2.c[72502,72515] [2022-01-10 04:12:39,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:12:39,810 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 04:12:39,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:12:39,886 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.02.i.cil-2.c[72502,72515] [2022-01-10 04:12:39,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:12:39,891 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:12:39,970 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.02.i.cil-2.c[72502,72515] [2022-01-10 04:12:39,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:12:40,004 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:12:40,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:40 WrapperNode [2022-01-10 04:12:40,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:12:40,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:12:40,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:12:40,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:12:40,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:40" (1/1) ... [2022-01-10 04:12:40,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:40" (1/1) ... [2022-01-10 04:12:40,089 INFO L137 Inliner]: procedures = 41, calls = 248, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 775 [2022-01-10 04:12:40,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:12:40,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:12:40,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:12:40,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:12:40,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:40" (1/1) ... [2022-01-10 04:12:40,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:40" (1/1) ... [2022-01-10 04:12:40,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:40" (1/1) ... [2022-01-10 04:12:40,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:40" (1/1) ... [2022-01-10 04:12:40,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:40" (1/1) ... [2022-01-10 04:12:40,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:40" (1/1) ... [2022-01-10 04:12:40,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:40" (1/1) ... [2022-01-10 04:12:40,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:12:40,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:12:40,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:12:40,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:12:40,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:40" (1/1) ... [2022-01-10 04:12:40,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:12:40,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:12:40,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 04:12:40,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 04:12:40,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 04:12:40,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:12:40,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:12:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 04:12:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 04:12:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 04:12:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 04:12:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 04:12:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 04:12:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:12:40,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:12:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 04:12:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 04:12:40,409 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:12:40,410 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:12:40,433 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 04:12:52,158 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-01-10 04:12:52,158 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-01-10 04:12:52,158 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:12:52,163 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:12:52,164 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:12:52,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:12:52 BoogieIcfgContainer [2022-01-10 04:12:52,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:12:52,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:12:52,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:12:52,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:12:52,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:12:39" (1/3) ... [2022-01-10 04:12:52,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7a2986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:12:52, skipping insertion in model container [2022-01-10 04:12:52,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:40" (2/3) ... [2022-01-10 04:12:52,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7a2986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:12:52, skipping insertion in model container [2022-01-10 04:12:52,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:12:52" (3/3) ... [2022-01-10 04:12:52,171 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.02.i.cil-2.c [2022-01-10 04:12:52,175 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:12:52,175 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:12:52,213 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:12:52,228 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 04:12:52,228 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:12:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 143 states have (on average 1.7062937062937062) internal successors, (244), 144 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:52,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 04:12:52,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:12:52,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:12:52,252 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:12:52,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:12:52,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1430118927, now seen corresponding path program 1 times [2022-01-10 04:12:52,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:12:52,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307310940] [2022-01-10 04:12:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:12:52,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:12:52,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:12:52,298 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 04:12:52,300 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 04:12:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:12:53,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:12:53,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:12:53,593 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 04:12:53,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:12:53,594 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:12:53,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307310940] [2022-01-10 04:12:53,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307310940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:12:53,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:12:53,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:12:53,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86597977] [2022-01-10 04:12:53,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:12:53,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:12:53,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:12:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:12:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:12:53,620 INFO L87 Difference]: Start difference. First operand has 145 states, 143 states have (on average 1.7062937062937062) internal successors, (244), 144 states have internal predecessors, (244), 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 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:53,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:12:53,708 INFO L93 Difference]: Finished difference Result 412 states and 698 transitions. [2022-01-10 04:12:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:12:53,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2022-01-10 04:12:53,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:12:53,718 INFO L225 Difference]: With dead ends: 412 [2022-01-10 04:12:53,718 INFO L226 Difference]: Without dead ends: 251 [2022-01-10 04:12:53,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:12:53,723 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 186 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:12:53,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 456 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:12:53,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-01-10 04:12:53,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-01-10 04:12:53,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.516) internal successors, (379), 250 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:53,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 379 transitions. [2022-01-10 04:12:53,762 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 379 transitions. Word has length 47 [2022-01-10 04:12:53,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:12:53,762 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 379 transitions. [2022-01-10 04:12:53,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:53,763 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 379 transitions. [2022-01-10 04:12:53,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 04:12:53,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:12:53,766 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, 1, 1, 1] [2022-01-10 04:12:53,801 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 04:12:53,981 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 04:12:53,981 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:12:53,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:12:53,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1889550317, now seen corresponding path program 1 times [2022-01-10 04:12:53,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:12:53,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796361021] [2022-01-10 04:12:53,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:12:53,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:12:53,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:12:53,985 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 04:12:53,994 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 04:12:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:12:54,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:12:54,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:12:55,252 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 04:12:55,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:12:55,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:12:55,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796361021] [2022-01-10 04:12:55,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796361021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:12:55,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:12:55,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:12:55,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988183526] [2022-01-10 04:12:55,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:12:55,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:12:55,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:12:55,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:12:55,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:12:55,255 INFO L87 Difference]: Start difference. First operand 251 states and 379 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:55,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:12:55,409 INFO L93 Difference]: Finished difference Result 489 states and 744 transitions. [2022-01-10 04:12:55,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:12:55,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-01-10 04:12:55,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:12:55,412 INFO L225 Difference]: With dead ends: 489 [2022-01-10 04:12:55,413 INFO L226 Difference]: Without dead ends: 367 [2022-01-10 04:12:55,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:12:55,415 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 134 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:12:55,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 557 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:12:55,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-01-10 04:12:55,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2022-01-10 04:12:55,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.5136612021857923) internal successors, (554), 366 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:55,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 554 transitions. [2022-01-10 04:12:55,430 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 554 transitions. Word has length 64 [2022-01-10 04:12:55,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:12:55,430 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 554 transitions. [2022-01-10 04:12:55,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 554 transitions. [2022-01-10 04:12:55,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 04:12:55,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:12:55,434 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, 1, 1, 1] [2022-01-10 04:12:55,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 04:12:55,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:12:55,652 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:12:55,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:12:55,652 INFO L85 PathProgramCache]: Analyzing trace with hash -617936825, now seen corresponding path program 1 times [2022-01-10 04:12:55,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:12:55,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030518708] [2022-01-10 04:12:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:12:55,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:12:55,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:12:55,655 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:12:55,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 04:12:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:12:56,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:12:56,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:12:56,960 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 04:12:56,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:12:56,960 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:12:56,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030518708] [2022-01-10 04:12:56,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030518708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:12:56,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:12:56,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:12:56,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195702796] [2022-01-10 04:12:56,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:12:56,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:12:56,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:12:56,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:12:56,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:12:56,962 INFO L87 Difference]: Start difference. First operand 367 states and 554 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:57,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:12:57,094 INFO L93 Difference]: Finished difference Result 723 states and 1098 transitions. [2022-01-10 04:12:57,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:12:57,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 86 [2022-01-10 04:12:57,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:12:57,097 INFO L225 Difference]: With dead ends: 723 [2022-01-10 04:12:57,097 INFO L226 Difference]: Without dead ends: 485 [2022-01-10 04:12:57,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:12:57,098 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 135 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:12:57,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 561 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:12:57,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-01-10 04:12:57,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2022-01-10 04:12:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.512396694214876) internal successors, (732), 484 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 732 transitions. [2022-01-10 04:12:57,113 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 732 transitions. Word has length 86 [2022-01-10 04:12:57,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:12:57,113 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 732 transitions. [2022-01-10 04:12:57,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:57,114 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 732 transitions. [2022-01-10 04:12:57,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 04:12:57,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:12:57,124 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, 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] [2022-01-10 04:12:57,170 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 04:12:57,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:12:57,325 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:12:57,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:12:57,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1960687741, now seen corresponding path program 1 times [2022-01-10 04:12:57,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:12:57,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460001673] [2022-01-10 04:12:57,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:12:57,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:12:57,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:12:57,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:12:57,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 04:12:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:12:58,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:12:58,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:12:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 04:12:58,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:12:58,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:12:58,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460001673] [2022-01-10 04:12:58,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460001673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:12:58,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:12:58,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:12:58,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930258182] [2022-01-10 04:12:58,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:12:58,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:12:58,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:12:58,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:12:58,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:12:58,805 INFO L87 Difference]: Start difference. First operand 485 states and 732 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:58,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:12:58,958 INFO L93 Difference]: Finished difference Result 958 states and 1452 transitions. [2022-01-10 04:12:58,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:12:58,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 127 [2022-01-10 04:12:58,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:12:58,961 INFO L225 Difference]: With dead ends: 958 [2022-01-10 04:12:58,961 INFO L226 Difference]: Without dead ends: 602 [2022-01-10 04:12:58,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:12:58,963 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 134 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:12:58,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 559 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:12:58,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-01-10 04:12:58,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2022-01-10 04:12:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 1.5108153078202995) internal successors, (908), 601 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:58,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 908 transitions. [2022-01-10 04:12:58,978 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 908 transitions. Word has length 127 [2022-01-10 04:12:58,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:12:58,978 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 908 transitions. [2022-01-10 04:12:58,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 908 transitions. [2022-01-10 04:12:58,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 04:12:58,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:12:58,984 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:12:59,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 04:12:59,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:12:59,200 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:12:59,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:12:59,200 INFO L85 PathProgramCache]: Analyzing trace with hash -65336556, now seen corresponding path program 1 times [2022-01-10 04:12:59,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:12:59,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562547927] [2022-01-10 04:12:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:12:59,202 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:12:59,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:12:59,228 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:12:59,229 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 04:13:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:13:01,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-10 04:13:01,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:13:01,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 04:13:01,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 04:13:02,990 INFO L353 Elim1Store]: treesize reduction 1496, result has 4.7 percent of original size [2022-01-10 04:13:02,991 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 58 treesize of output 85 [2022-01-10 04:13:03,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,130 INFO L244 Elim1Store]: Index analysis took 119 ms [2022-01-10 04:13:03,132 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 58 treesize of output 85 [2022-01-10 04:13:03,464 INFO L353 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2022-01-10 04:13:03,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2022-01-10 04:13:03,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:03,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2022-01-10 04:13:03,552 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-10 04:13:03,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-10 04:13:04,022 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-01-10 04:13:04,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:13:04,022 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:13:04,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562547927] [2022-01-10 04:13:04,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562547927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:13:04,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:13:04,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 04:13:04,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25778880] [2022-01-10 04:13:04,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:13:04,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:13:04,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:13:04,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:13:04,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:13:04,024 INFO L87 Difference]: Start difference. First operand 602 states and 908 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:13:06,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:08,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:10,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:12,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:18,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:21,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:23,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:13:23,363 INFO L93 Difference]: Finished difference Result 1201 states and 1812 transitions. [2022-01-10 04:13:23,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 04:13:23,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 150 [2022-01-10 04:13:23,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:13:23,368 INFO L225 Difference]: With dead ends: 1201 [2022-01-10 04:13:23,369 INFO L226 Difference]: Without dead ends: 602 [2022-01-10 04:13:23,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:13:23,370 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 7 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:13:23,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 631 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 2 Unknown, 0 Unchecked, 19.2s Time] [2022-01-10 04:13:23,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-01-10 04:13:23,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2022-01-10 04:13:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 1.5091514143094842) internal successors, (907), 601 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:13:23,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 907 transitions. [2022-01-10 04:13:23,390 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 907 transitions. Word has length 150 [2022-01-10 04:13:23,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:13:23,391 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 907 transitions. [2022-01-10 04:13:23,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:13:23,391 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 907 transitions. [2022-01-10 04:13:23,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 04:13:23,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:13:23,393 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:13:23,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 04:13:23,615 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 04:13:23,615 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:13:23,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:13:23,616 INFO L85 PathProgramCache]: Analyzing trace with hash -329984046, now seen corresponding path program 1 times [2022-01-10 04:13:23,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:13:23,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840890389] [2022-01-10 04:13:23,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:13:23,617 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:13:23,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:13:23,623 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 04:13:23,632 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 04:13:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:13:26,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 04:13:26,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:13:26,899 INFO L353 Elim1Store]: treesize reduction 1098, result has 5.7 percent of original size [2022-01-10 04:13:26,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 75 [2022-01-10 04:13:27,075 INFO L353 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-01-10 04:13:27,075 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 15 [2022-01-10 04:13:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 04:13:27,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:13:27,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:13:27,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840890389] [2022-01-10 04:13:27,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840890389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:13:27,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:13:27,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:13:27,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451363886] [2022-01-10 04:13:27,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:13:27,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:13:27,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:13:27,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:13:27,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:13:27,271 INFO L87 Difference]: Start difference. First operand 602 states and 907 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:13:29,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:31,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:35,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:39,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:41,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:42,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:13:42,407 INFO L93 Difference]: Finished difference Result 1349 states and 2037 transitions. [2022-01-10 04:13:42,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:13:42,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 150 [2022-01-10 04:13:42,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:13:42,419 INFO L225 Difference]: With dead ends: 1349 [2022-01-10 04:13:42,419 INFO L226 Difference]: Without dead ends: 757 [2022-01-10 04:13:42,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:13:42,420 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 30 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:13:42,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 550 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 131 Invalid, 2 Unknown, 33 Unchecked, 15.1s Time] [2022-01-10 04:13:42,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-01-10 04:13:42,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 690. [2022-01-10 04:13:42,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 1.537010159651669) internal successors, (1059), 689 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:13:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1059 transitions. [2022-01-10 04:13:42,432 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1059 transitions. Word has length 150 [2022-01-10 04:13:42,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:13:42,432 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 1059 transitions. [2022-01-10 04:13:42,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:13:42,432 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1059 transitions. [2022-01-10 04:13:42,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-10 04:13:42,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:13:42,433 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 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] [2022-01-10 04:13:42,498 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 04:13:42,634 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 04:13:42,634 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:13:42,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:13:42,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1210495758, now seen corresponding path program 1 times [2022-01-10 04:13:42,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:13:42,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278012306] [2022-01-10 04:13:42,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:13:42,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:13:42,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:13:42,637 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 04:13:42,638 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 04:13:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:13:44,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 04:13:44,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:13:45,728 INFO L353 Elim1Store]: treesize reduction 1098, result has 5.7 percent of original size [2022-01-10 04:13:45,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 75 [2022-01-10 04:13:46,020 INFO L353 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-01-10 04:13:46,020 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 15 [2022-01-10 04:13:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 04:13:46,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:13:46,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:13:46,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278012306] [2022-01-10 04:13:46,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278012306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:13:46,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:13:46,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:13:46,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549432067] [2022-01-10 04:13:46,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:13:46,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:13:46,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:13:46,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:13:46,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:13:46,204 INFO L87 Difference]: Start difference. First operand 690 states and 1059 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:13:48,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:50,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:54,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []