/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/seq-pthread/cs_stack-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:27:26,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:27:26,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:27:27,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:27:27,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:27:27,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:27:27,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:27:27,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:27:27,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:27:27,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:27:27,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:27:27,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:27:27,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:27:27,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:27:27,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:27:27,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:27:27,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:27:27,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:27:27,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:27:27,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:27:27,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:27:27,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:27:27,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:27:27,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:27:27,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 07:27:27,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 07:27:27,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 07:27:27,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 07:27:27,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 07:27:27,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-10 07:27:27,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:27:27,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:27:27,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:27:27,064 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 07:27:27,096 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:27:27,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:27:27,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:27:27,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:27:27,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:27:27,098 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:27:27,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:27:27,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:27:27,098 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:27:27,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:27:27,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:27:27,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:27:27,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:27:27,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:27:27,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:27:27,100 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:27:27,100 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:27:27,100 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:27:27,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:27:27,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:27:27,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:27:27,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:27:27,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:27:27,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:27:27,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:27:27,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:27:27,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:27:27,102 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:27:27,102 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:27:27,103 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:27:27,103 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:27:27,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:27:27,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:27:27,103 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:27:27,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:27:27,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:27:27,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:27:27,365 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:27:27,367 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:27:27,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_stack-1.i [2022-01-10 07:27:27,428 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e34cb2901/fdeb6f79ff074d7796a6ea3dd12326ce/FLAGb710cfdb8 [2022-01-10 07:27:27,966 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:27:27,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_stack-1.i [2022-01-10 07:27:27,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e34cb2901/fdeb6f79ff074d7796a6ea3dd12326ce/FLAGb710cfdb8 [2022-01-10 07:27:28,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e34cb2901/fdeb6f79ff074d7796a6ea3dd12326ce [2022-01-10 07:27:28,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:27:28,409 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:27:28,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:27:28,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:27:28,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:27:28,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:27:28" (1/1) ... [2022-01-10 07:27:28,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1705517d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:28, skipping insertion in model container [2022-01-10 07:27:28,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:27:28" (1/1) ... [2022-01-10 07:27:28,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:27:28,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:27:28,854 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_stack-1.i[34744,34757] [2022-01-10 07:27:28,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:27:29,019 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:27:29,068 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_stack-1.i[34744,34757] [2022-01-10 07:27:29,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:27:29,171 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:27:29,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:29 WrapperNode [2022-01-10 07:27:29,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:27:29,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:27:29,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:27:29,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:27:29,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:29" (1/1) ... [2022-01-10 07:27:29,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:29" (1/1) ... [2022-01-10 07:27:29,251 INFO L137 Inliner]: procedures = 258, calls = 296, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 664 [2022-01-10 07:27:29,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:27:29,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:27:29,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:27:29,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:27:29,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:29" (1/1) ... [2022-01-10 07:27:29,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:29" (1/1) ... [2022-01-10 07:27:29,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:29" (1/1) ... [2022-01-10 07:27:29,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:29" (1/1) ... [2022-01-10 07:27:29,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:29" (1/1) ... [2022-01-10 07:27:29,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:29" (1/1) ... [2022-01-10 07:27:29,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:29" (1/1) ... [2022-01-10 07:27:29,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:27:29,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:27:29,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:27:29,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:27:29,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:29" (1/1) ... [2022-01-10 07:27:29,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:27:29,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:27:29,349 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 07:27:29,359 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 07:27:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-01-10 07:27:29,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 07:27:29,383 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-10 07:27:29,383 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-10 07:27:29,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 07:27:29,384 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2022-01-10 07:27:29,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2022-01-10 07:27:29,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 07:27:29,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-01-10 07:27:29,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 07:27:29,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 07:27:29,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 07:27:29,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:27:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 07:27:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2022-01-10 07:27:29,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2022-01-10 07:27:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2022-01-10 07:27:29,387 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2022-01-10 07:27:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:27:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 07:27:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-01-10 07:27:29,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-01-10 07:27:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-01-10 07:27:29,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-01-10 07:27:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-01-10 07:27:29,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-01-10 07:27:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-01-10 07:27:29,388 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-01-10 07:27:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-01-10 07:27:29,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-01-10 07:27:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:27:29,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:27:29,631 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:27:29,633 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:27:29,741 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:29,741 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);#res := 0bv32; [2022-01-10 07:27:29,771 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:29,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0); [2022-01-10 07:27:29,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0); [2022-01-10 07:27:29,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:29,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:29,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L933: SUMMARY for call __CS_cs(); srcloc: null [2022-01-10 07:27:29,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0); [2022-01-10 07:27:29,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:29,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0); [2022-01-10 07:27:30,181 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:30,182 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);push_#res#1 := 0bv32; [2022-01-10 07:27:30,182 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:30,182 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);pop_#res#1 := 0bv32; [2022-01-10 07:27:30,182 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:30,182 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);pop_#res#1 := 0bv32; [2022-01-10 07:27:30,183 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:30,183 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);pop_#res#1 := 0bv32; [2022-01-10 07:27:30,183 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);pop_#res#1 := 0bv32; [2022-01-10 07:27:30,184 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0));pop_#res#1 := 0bv32; [2022-01-10 07:27:30,184 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L989-2: SUMMARY for call __CS_cs(); srcloc: null [2022-01-10 07:27:30,184 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);push_#res#1 := 0bv32; [2022-01-10 07:27:30,184 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:32,860 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:27:32,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:27:32,870 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-10 07:27:32,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:27:32 BoogieIcfgContainer [2022-01-10 07:27:32,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:27:32,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:27:32,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:27:32,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:27:32,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:27:28" (1/3) ... [2022-01-10 07:27:32,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160cdcd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:27:32, skipping insertion in model container [2022-01-10 07:27:32,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:29" (2/3) ... [2022-01-10 07:27:32,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160cdcd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:27:32, skipping insertion in model container [2022-01-10 07:27:32,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:27:32" (3/3) ... [2022-01-10 07:27:32,879 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_stack-1.i [2022-01-10 07:27:32,883 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:27:32,883 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:27:32,926 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:27:32,931 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 07:27:32,931 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:27:32,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 142 states have (on average 1.528169014084507) internal successors, (217), 145 states have internal predecessors, (217), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-01-10 07:27:32,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 07:27:32,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:32,989 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:27:32,989 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:32,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:32,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2082055361, now seen corresponding path program 1 times [2022-01-10 07:27:33,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:33,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657387746] [2022-01-10 07:27:33,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:33,006 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:33,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:33,008 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 07:27:33,009 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 07:27:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:46,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 10871 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 07:27:46,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-01-10 07:27:46,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:46,720 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:46,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657387746] [2022-01-10 07:27:46,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657387746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:46,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:46,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:27:46,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001287639] [2022-01-10 07:27:46,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:46,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 07:27:46,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:46,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 07:27:46,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 07:27:46,768 INFO L87 Difference]: Start difference. First operand has 226 states, 142 states have (on average 1.528169014084507) internal successors, (217), 145 states have internal predecessors, (217), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 07:27:46,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:46,845 INFO L93 Difference]: Finished difference Result 450 states and 791 transitions. [2022-01-10 07:27:46,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 07:27:46,851 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 96 [2022-01-10 07:27:46,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:46,862 INFO L225 Difference]: With dead ends: 450 [2022-01-10 07:27:46,862 INFO L226 Difference]: Without dead ends: 222 [2022-01-10 07:27:46,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 07:27:46,874 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:46,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:27:46,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-01-10 07:27:46,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-01-10 07:27:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 139 states have (on average 1.4820143884892085) internal successors, (206), 141 states have internal predecessors, (206), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-01-10 07:27:46,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 352 transitions. [2022-01-10 07:27:46,964 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 352 transitions. Word has length 96 [2022-01-10 07:27:46,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:46,965 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 352 transitions. [2022-01-10 07:27:46,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 07:27:46,965 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 352 transitions. [2022-01-10 07:27:46,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 07:27:46,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:46,985 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:27:47,193 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 07:27:47,213 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 07:27:47,214 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:47,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:47,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1601368773, now seen corresponding path program 1 times [2022-01-10 07:27:47,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:47,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40714714] [2022-01-10 07:27:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:47,216 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:47,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:47,217 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 07:27:47,218 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 07:27:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:28:00,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 10871 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:28:00,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:28:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-10 07:28:00,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:28:00,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:28:00,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40714714] [2022-01-10 07:28:00,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40714714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:28:00,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:28:00,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:28:00,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802287749] [2022-01-10 07:28:00,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:28:00,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:28:00,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:28:00,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:28:00,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:28:00,905 INFO L87 Difference]: Start difference. First operand 222 states and 352 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-01-10 07:28:01,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:28:01,139 INFO L93 Difference]: Finished difference Result 442 states and 702 transitions. [2022-01-10 07:28:01,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:28:01,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96 [2022-01-10 07:28:01,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:28:01,147 INFO L225 Difference]: With dead ends: 442 [2022-01-10 07:28:01,147 INFO L226 Difference]: Without dead ends: 229 [2022-01-10 07:28:01,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 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 07:28:01,150 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 8 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:28:01,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 694 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:28:01,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-01-10 07:28:01,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 223. [2022-01-10 07:28:01,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 140 states have (on average 1.4785714285714286) internal successors, (207), 142 states have internal predecessors, (207), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-01-10 07:28:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 353 transitions. [2022-01-10 07:28:01,170 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 353 transitions. Word has length 96 [2022-01-10 07:28:01,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:28:01,170 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 353 transitions. [2022-01-10 07:28:01,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-01-10 07:28:01,171 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 353 transitions. [2022-01-10 07:28:01,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:28:01,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:28:01,174 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:01,365 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 07:28:01,395 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 07:28:01,396 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:28:01,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:28:01,396 INFO L85 PathProgramCache]: Analyzing trace with hash -36735240, now seen corresponding path program 1 times [2022-01-10 07:28:01,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:28:01,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043803908] [2022-01-10 07:28:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:28:01,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:28:01,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:28:01,400 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 07:28:01,402 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 07:28:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:28:14,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 10910 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:28:14,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:28:15,099 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-10 07:28:15,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:28:15,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:28:15,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043803908] [2022-01-10 07:28:15,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043803908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:28:15,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:28:15,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:28:15,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201088819] [2022-01-10 07:28:15,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:28:15,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:28:15,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:28:15,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:28:15,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:28:15,101 INFO L87 Difference]: Start difference. First operand 223 states and 353 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-01-10 07:28:15,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:28:15,203 INFO L93 Difference]: Finished difference Result 447 states and 709 transitions. [2022-01-10 07:28:15,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:28:15,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 101 [2022-01-10 07:28:15,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:28:15,208 INFO L225 Difference]: With dead ends: 447 [2022-01-10 07:28:15,208 INFO L226 Difference]: Without dead ends: 227 [2022-01-10 07:28:15,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 07:28:15,210 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 2 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:28:15,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 691 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:28:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-01-10 07:28:15,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2022-01-10 07:28:15,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 142 states have (on average 1.471830985915493) internal successors, (209), 144 states have internal predecessors, (209), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-01-10 07:28:15,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 355 transitions. [2022-01-10 07:28:15,230 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 355 transitions. Word has length 101 [2022-01-10 07:28:15,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:28:15,231 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 355 transitions. [2022-01-10 07:28:15,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-01-10 07:28:15,231 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 355 transitions. [2022-01-10 07:28:15,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 07:28:15,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:28:15,234 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:15,444 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 07:28:15,447 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 07:28:15,447 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:28:15,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:28:15,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1158934788, now seen corresponding path program 1 times [2022-01-10 07:28:15,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:28:15,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180162586] [2022-01-10 07:28:15,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:28:15,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:28:15,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:28:15,450 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 07:28:15,451 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 07:28:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:28:29,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 10942 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:28:29,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:28:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-01-10 07:28:29,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:28:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-01-10 07:28:29,860 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:28:29,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180162586] [2022-01-10 07:28:29,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180162586] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:28:29,861 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:28:29,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 07:28:29,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822906257] [2022-01-10 07:28:29,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:28:29,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:28:29,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:28:29,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:28:29,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:28:29,863 INFO L87 Difference]: Start difference. First operand 225 states and 355 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-01-10 07:28:30,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:28:30,142 INFO L93 Difference]: Finished difference Result 456 states and 720 transitions. [2022-01-10 07:28:30,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:28:30,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 105 [2022-01-10 07:28:30,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:28:30,147 INFO L225 Difference]: With dead ends: 456 [2022-01-10 07:28:30,147 INFO L226 Difference]: Without dead ends: 234 [2022-01-10 07:28:30,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:28:30,149 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 10 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:28:30,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1034 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:28:30,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-01-10 07:28:30,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2022-01-10 07:28:30,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 150 states have (on average 1.4466666666666668) internal successors, (217), 152 states have internal predecessors, (217), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-01-10 07:28:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 363 transitions. [2022-01-10 07:28:30,171 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 363 transitions. Word has length 105 [2022-01-10 07:28:30,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:28:30,171 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 363 transitions. [2022-01-10 07:28:30,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-01-10 07:28:30,172 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 363 transitions. [2022-01-10 07:28:30,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 07:28:30,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:28:30,174 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:30,409 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forcibly destroying the process [2022-01-10 07:28:30,469 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 07:28:30,470 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 07:28:30,470 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:28:30,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:28:30,470 INFO L85 PathProgramCache]: Analyzing trace with hash -613512956, now seen corresponding path program 2 times [2022-01-10 07:28:30,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:28:30,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86647171] [2022-01-10 07:28:30,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 07:28:30,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:28:30,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:28:30,473 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 07:28:30,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process