/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.14.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:14:33,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:14:33,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:14:33,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:14:33,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:14:33,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:14:33,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:14:33,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:14:33,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:14:33,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:14:33,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:14:33,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:14:33,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:14:33,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:14:33,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:14:33,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:14:33,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:14:33,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:14:33,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:14:33,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:14:33,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:14:33,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:14:33,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:14:33,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:14:33,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 04:14:33,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 04:14:33,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 04:14:33,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 04:14:33,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 04:14:33,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 04:14:33,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 04:14:33,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 04:14:33,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 04:14:33,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 04:14:33,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 04:14:33,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 04:14:33,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 04:14:33,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 04:14:33,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:14:33,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:14:33,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:14:33,230 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 04:14:33,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:14:33,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:14:33,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:14:33,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:14:33,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:14:33,259 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:14:33,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:14:33,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:14:33,260 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:14:33,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:14:33,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:14:33,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:14:33,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:14:33,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:14:33,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:14:33,262 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:14:33,262 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:14:33,262 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:14:33,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:14:33,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:14:33,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:14:33,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:14:33,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:14:33,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:14:33,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:14:33,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:14:33,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:14:33,265 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:14:33,265 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:14:33,265 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:14:33,265 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:14:33,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:14:33,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:14:33,266 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:14:33,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:14:33,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:14:33,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:14:33,535 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:14:33,535 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:14:33,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_srvr.blast.14.i.cil-2.c [2022-01-10 04:14:33,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/496bd3ab6/9877f3c1759342869bceb0420b95fd81/FLAGedf690d62 [2022-01-10 04:14:34,045 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:14:34,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.14.i.cil-2.c [2022-01-10 04:14:34,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/496bd3ab6/9877f3c1759342869bceb0420b95fd81/FLAGedf690d62 [2022-01-10 04:14:34,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/496bd3ab6/9877f3c1759342869bceb0420b95fd81 [2022-01-10 04:14:34,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:14:34,089 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:14:34,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:14:34,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:14:34,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:14:34,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:14:34" (1/1) ... [2022-01-10 04:14:34,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f37f013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:34, skipping insertion in model container [2022-01-10 04:14:34,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:14:34" (1/1) ... [2022-01-10 04:14:34,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:14:34,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:14:34,598 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.14.i.cil-2.c[76259,76272] [2022-01-10 04:14:34,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:14:34,629 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 04:14:34,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:14:34,742 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.14.i.cil-2.c[76259,76272] [2022-01-10 04:14:34,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:14:34,753 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:14:34,852 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.14.i.cil-2.c[76259,76272] [2022-01-10 04:14:34,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:14:34,875 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:14:34,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:34 WrapperNode [2022-01-10 04:14:34,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:14:34,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:14:34,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:14:34,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:14:34,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:34" (1/1) ... [2022-01-10 04:14:34,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:34" (1/1) ... [2022-01-10 04:14:34,966 INFO L137 Inliner]: procedures = 41, calls = 248, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 796 [2022-01-10 04:14:34,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:14:34,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:14:34,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:14:34,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:14:34,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:34" (1/1) ... [2022-01-10 04:14:34,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:34" (1/1) ... [2022-01-10 04:14:34,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:34" (1/1) ... [2022-01-10 04:14:34,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:34" (1/1) ... [2022-01-10 04:14:35,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:34" (1/1) ... [2022-01-10 04:14:35,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:34" (1/1) ... [2022-01-10 04:14:35,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:34" (1/1) ... [2022-01-10 04:14:35,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:14:35,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:14:35,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:14:35,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:14:35,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:34" (1/1) ... [2022-01-10 04:14:35,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:14:35,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:14:35,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 04:14:35,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 04:14:35,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 04:14:35,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:14:35,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:14:35,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 04:14:35,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 04:14:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 04:14:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 04:14:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 04:14:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 04:14:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:14:35,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:14:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 04:14:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 04:14:35,354 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:14:35,356 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:14:35,375 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 04:14:48,001 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-01-10 04:14:48,001 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-01-10 04:14:48,001 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:14:48,007 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:14:48,007 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:14:48,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:14:48 BoogieIcfgContainer [2022-01-10 04:14:48,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:14:48,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:14:48,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:14:48,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:14:48,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:14:34" (1/3) ... [2022-01-10 04:14:48,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150a3632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:14:48, skipping insertion in model container [2022-01-10 04:14:48,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:14:34" (2/3) ... [2022-01-10 04:14:48,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150a3632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:14:48, skipping insertion in model container [2022-01-10 04:14:48,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:14:48" (3/3) ... [2022-01-10 04:14:48,019 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.14.i.cil-2.c [2022-01-10 04:14:48,023 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:14:48,023 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:14:48,058 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:14:48,063 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 04:14:48,063 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:14:48,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 153 states have (on average 1.7254901960784315) internal successors, (264), 154 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:14:48,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 04:14:48,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:48,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:48,085 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:48,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:48,089 INFO L85 PathProgramCache]: Analyzing trace with hash 918516044, now seen corresponding path program 1 times [2022-01-10 04:14:48,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:48,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142902690] [2022-01-10 04:14:48,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:48,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:48,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:48,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:14:48,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 04:14:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:49,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-10 04:14:49,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:49,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 04:14:49,852 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 04:14:51,034 INFO L353 Elim1Store]: treesize reduction 1496, result has 4.7 percent of original size [2022-01-10 04:14:51,034 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 78 treesize of output 85 [2022-01-10 04:14:51,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,186 INFO L244 Elim1Store]: Index analysis took 130 ms [2022-01-10 04:14:51,190 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 85 [2022-01-10 04:14:51,525 INFO L353 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2022-01-10 04:14:51,525 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2022-01-10 04:14:51,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:51,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2022-01-10 04:14:51,649 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-10 04:14:51,656 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-10 04:14:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:14:51,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:51,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:51,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142902690] [2022-01-10 04:14:51,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142902690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:51,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:51,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 04:14:51,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084726006] [2022-01-10 04:14:51,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:51,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:14:51,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:51,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:14:51,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:14:51,867 INFO L87 Difference]: Start difference. First operand has 155 states, 153 states have (on average 1.7254901960784315) internal successors, (264), 154 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:14:53,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:55,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:59,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:00,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:01,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:06,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:08,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:11,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:12,756 WARN L534 Checker$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 04:15:15,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:15:15,219 INFO L93 Difference]: Finished difference Result 311 states and 527 transitions. [2022-01-10 04:15:15,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 04:15:15,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-01-10 04:15:15,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:15:15,231 INFO L225 Difference]: With dead ends: 311 [2022-01-10 04:15:15,231 INFO L226 Difference]: Without dead ends: 142 [2022-01-10 04:15:15,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:15:15,239 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 10 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:15:15,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 865 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 2 Unknown, 0 Unchecked, 23.1s Time] [2022-01-10 04:15:15,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-01-10 04:15:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-01-10 04:15:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.553191489361702) internal successors, (219), 141 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:15:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 219 transitions. [2022-01-10 04:15:15,290 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 219 transitions. Word has length 44 [2022-01-10 04:15:15,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:15:15,291 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 219 transitions. [2022-01-10 04:15:15,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:15:15,291 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 219 transitions. [2022-01-10 04:15:15,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 04:15:15,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:15:15,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:15:15,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 04:15:15,504 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 04:15:15,505 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:15:15,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:15:15,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1166662538, now seen corresponding path program 1 times [2022-01-10 04:15:15,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:15:15,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090473312] [2022-01-10 04:15:15,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:15:15,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:15:15,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:15:15,508 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 04:15:15,510 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 04:15:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:15:17,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 04:15:17,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:15:17,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:15:17,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:15:17,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:15:17,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:15:17,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:15:17,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:15:17,734 INFO L353 Elim1Store]: treesize reduction 1124, result has 5.4 percent of original size [2022-01-10 04:15:17,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 72 treesize of output 74 [2022-01-10 04:15:18,396 INFO L353 Elim1Store]: treesize reduction 825, result has 7.2 percent of original size [2022-01-10 04:15:18,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 66 treesize of output 86 [2022-01-10 04:15:18,990 INFO L353 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-01-10 04:15:18,991 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 23 [2022-01-10 04:15:19,089 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 04:15:19,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:15:19,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:15:19,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090473312] [2022-01-10 04:15:19,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090473312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:15:19,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:15:19,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:15:19,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703798852] [2022-01-10 04:15:19,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:15:19,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:15:19,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:15:19,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:15:19,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:15:19,093 INFO L87 Difference]: Start difference. First operand 142 states and 219 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:15:21,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:28,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:30,511 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 04:15:31,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:15:31,221 INFO L93 Difference]: Finished difference Result 302 states and 466 transitions. [2022-01-10 04:15:31,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:15:31,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-01-10 04:15:31,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:15:31,225 INFO L225 Difference]: With dead ends: 302 [2022-01-10 04:15:31,225 INFO L226 Difference]: Without dead ends: 170 [2022-01-10 04:15:31,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:15:31,227 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 22 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:15:31,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 497 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 149 Invalid, 1 Unknown, 0 Unchecked, 12.0s Time] [2022-01-10 04:15:31,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-01-10 04:15:31,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 153. [2022-01-10 04:15:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.5657894736842106) internal successors, (238), 152 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:15:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 238 transitions. [2022-01-10 04:15:31,238 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 238 transitions. Word has length 44 [2022-01-10 04:15:31,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:15:31,238 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 238 transitions. [2022-01-10 04:15:31,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:15:31,238 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 238 transitions. [2022-01-10 04:15:31,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 04:15:31,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:15:31,239 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:15:31,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 04:15:31,445 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 04:15:31,445 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:15:31,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:15:31,446 INFO L85 PathProgramCache]: Analyzing trace with hash -616728635, now seen corresponding path program 1 times [2022-01-10 04:15:31,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:15:31,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239752113] [2022-01-10 04:15:31,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:15:31,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:15:31,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:15:31,456 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 04:15:31,475 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 04:15:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:15:33,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:15:33,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:15:34,297 INFO L353 Elim1Store]: treesize reduction 1104, result has 5.5 percent of original size [2022-01-10 04:15:34,298 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 69 treesize of output 73 [2022-01-10 04:15:34,557 INFO L353 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2022-01-10 04:15:34,558 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 04:15:34,646 INFO L353 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-01-10 04:15:34,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 13 [2022-01-10 04:15:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:15:34,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:15:34,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:15:34,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239752113] [2022-01-10 04:15:34,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239752113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:15:34,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:15:34,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:15:34,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504826017] [2022-01-10 04:15:34,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:15:34,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:15:34,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:15:34,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:15:34,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:15:34,810 INFO L87 Difference]: Start difference. First operand 153 states and 238 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:15:36,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:39,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:42,908 WARN L534 Checker$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 04:15:45,544 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 04:15:46,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:15:46,182 INFO L93 Difference]: Finished difference Result 296 states and 458 transitions. [2022-01-10 04:15:46,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:15:46,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 04:15:46,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:15:46,185 INFO L225 Difference]: With dead ends: 296 [2022-01-10 04:15:46,185 INFO L226 Difference]: Without dead ends: 164 [2022-01-10 04:15:46,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:15:46,187 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 17 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:15:46,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 526 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 109 Invalid, 3 Unknown, 20 Unchecked, 11.3s Time] [2022-01-10 04:15:46,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-01-10 04:15:46,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 153. [2022-01-10 04:15:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.5592105263157894) internal successors, (237), 152 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:15:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 237 transitions. [2022-01-10 04:15:46,195 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 237 transitions. Word has length 57 [2022-01-10 04:15:46,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:15:46,196 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 237 transitions. [2022-01-10 04:15:46,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:15:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 237 transitions. [2022-01-10 04:15:46,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 04:15:46,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:15:46,197 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:15:46,236 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 04:15:46,402 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 04:15:46,402 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:15:46,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:15:46,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2106199760, now seen corresponding path program 1 times [2022-01-10 04:15:46,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:15:46,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77935963] [2022-01-10 04:15:46,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:15:46,404 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:15:46,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:15:46,405 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 04:15:46,406 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 04:15:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat