/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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:27:27,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:27:27,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:27:27,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:27:27,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:27:27,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:27:27,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:27:27,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:27:27,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:27:27,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:27:27,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:27:27,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:27:27,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:27:27,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:27:27,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:27:27,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:27:27,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:27:27,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:27:27,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:27:27,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:27:27,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:27:27,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:27:27,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:27:27,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:27:27,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 07:27:27,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 07:27:27,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 07:27:27,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 07:27:27,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 07:27:27,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-10 07:27:27,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:27:27,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:27:27,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:27:27,370 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 07:27:27,390 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:27:27,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:27:27,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:27:27,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:27:27,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:27:27,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:27:27,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:27:27,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:27:27,395 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:27:27,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:27:27,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:27:27,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:27:27,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:27:27,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:27:27,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:27:27,396 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:27:27,396 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:27:27,396 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:27:27,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:27:27,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:27:27,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:27:27,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:27:27,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:27:27,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:27:27,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:27:27,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:27:27,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:27:27,398 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:27:27,398 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:27:27,398 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:27:27,398 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:27:27,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:27:27,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:27:27,399 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:27:27,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:27:27,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:27:27,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:27:27,621 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:27:27,621 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:27:27,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_stack-2.i [2022-01-10 07:27:27,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bf9e39dc/76feaaaf22934c6ab27d769fff461a7f/FLAG3e6f4a79d [2022-01-10 07:27:28,106 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:27:28,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_stack-2.i [2022-01-10 07:27:28,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bf9e39dc/76feaaaf22934c6ab27d769fff461a7f/FLAG3e6f4a79d [2022-01-10 07:27:28,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bf9e39dc/76feaaaf22934c6ab27d769fff461a7f [2022-01-10 07:27:28,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:27:28,423 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:27:28,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:27:28,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:27:28,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:27:28,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:27:28" (1/1) ... [2022-01-10 07:27:28,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@587314a3 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 07:27:28,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:27:28" (1/1) ... [2022-01-10 07:27:28,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:27:28,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:27:28,866 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-2.i[34556,34569] [2022-01-10 07:27:28,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:27:29,004 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:27:29,044 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-2.i[34556,34569] [2022-01-10 07:27:29,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:27:29,132 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:27:29,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:29 WrapperNode [2022-01-10 07:27:29,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:27:29,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:27:29,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:27:29,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:27:29,139 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 07:27:29,178 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 07:27:29,232 INFO L137 Inliner]: procedures = 256, calls = 290, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 627 [2022-01-10 07:27:29,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:27:29,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:27:29,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:27:29,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:27:29,241 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 07:27:29,242 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 07:27:29,252 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 07:27:29,252 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 07:27:29,284 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 07:27:29,300 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 07:27:29,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:27:29,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:27:29,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:27:29,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:27:29,320 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 07:27:29,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:27:29,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:27:29,347 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 07:27:29,354 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 07:27:29,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-01-10 07:27:29,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 07:27:29,374 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-10 07:27:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-10 07:27:29,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 07:27:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2022-01-10 07:27:29,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2022-01-10 07:27:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 07:27:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-01-10 07:27:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 07:27:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 07:27:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 07:27:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:27:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 07:27:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2022-01-10 07:27:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2022-01-10 07:27:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2022-01-10 07:27:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2022-01-10 07:27:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:27:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 07:27:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-01-10 07:27:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-01-10 07:27:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-01-10 07:27:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-01-10 07:27:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-01-10 07:27:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-01-10 07:27:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-01-10 07:27:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-01-10 07:27:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-01-10 07:27:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-01-10 07:27:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:27:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:27:29,534 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:27:29,536 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:27:29,599 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:29,600 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);#res := 0bv32; [2022-01-10 07:27:29,613 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0); [2022-01-10 07:27:29,613 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:29,613 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:29,614 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0); [2022-01-10 07:27:29,614 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0); [2022-01-10 07:27:29,614 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:29,614 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:29,614 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0); [2022-01-10 07:27:29,614 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L930: SUMMARY for call __CS_cs(); srcloc: null [2022-01-10 07:27:29,994 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:29,994 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);push_#res#1 := 0bv32; [2022-01-10 07:27:29,994 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:29,994 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);pop_#res#1 := 0bv32; [2022-01-10 07:27:29,995 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:29,995 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);pop_#res#1 := 0bv32; [2022-01-10 07:27:29,995 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:29,995 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);pop_#res#1 := 0bv32; [2022-01-10 07:27:29,996 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);pop_#res#1 := 0bv32; [2022-01-10 07:27:29,996 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0));pop_#res#1 := 0bv32; [2022-01-10 07:27:29,996 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L986-3: SUMMARY for call __CS_cs(); srcloc: null [2022-01-10 07:27:29,996 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);push_#res#1 := 0bv32; [2022-01-10 07:27:29,997 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:32,463 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:27:32,476 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:27:32,476 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 07:27:32,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:27:32 BoogieIcfgContainer [2022-01-10 07:27:32,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:27:32,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:27:32,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:27:32,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:27:32,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:27:28" (1/3) ... [2022-01-10 07:27:32,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525117c0 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 07:27:32,484 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 07:27:32,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525117c0 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 07:27:32,484 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 07:27:32,485 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_stack-2.i [2022-01-10 07:27:32,489 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:27:32,489 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:27:32,534 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:27:32,538 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 07:27:32,538 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:27:32,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 138 states have internal predecessors, (205), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-01-10 07:27:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 07:27:32,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:32,580 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] [2022-01-10 07:27:32,581 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:32,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:32,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1061206243, now seen corresponding path program 1 times [2022-01-10 07:27:32,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:32,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763687953] [2022-01-10 07:27:32,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:32,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:32,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:32,600 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 07:27:32,629 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 07:27:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:46,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 10869 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 07:27:46,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-01-10 07:27:47,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:47,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:47,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763687953] [2022-01-10 07:27:47,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763687953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:47,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:47,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:27:47,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757714946] [2022-01-10 07:27:47,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:47,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 07:27:47,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:47,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 07:27:47,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 07:27:47,331 INFO L87 Difference]: Start difference. First operand has 221 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 138 states have internal predecessors, (205), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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 07:27:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:47,380 INFO L93 Difference]: Finished difference Result 438 states and 773 transitions. [2022-01-10 07:27:47,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 07:27:47,382 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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 94 [2022-01-10 07:27:47,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:47,400 INFO L225 Difference]: With dead ends: 438 [2022-01-10 07:27:47,400 INFO L226 Difference]: Without dead ends: 217 [2022-01-10 07:27:47,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 93 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 07:27:47,408 INFO L933 BasicCegarLoop]: 351 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, 351 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 07:27:47,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:27:47,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-01-10 07:27:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-01-10 07:27:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 132 states have (on average 1.4924242424242424) internal successors, (197), 134 states have internal predecessors, (197), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-01-10 07:27:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 347 transitions. [2022-01-10 07:27:47,498 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 347 transitions. Word has length 94 [2022-01-10 07:27:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:47,499 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 347 transitions. [2022-01-10 07:27:47,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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 07:27:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 347 transitions. [2022-01-10 07:27:47,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 07:27:47,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:47,505 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] [2022-01-10 07:27:47,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 07:27:47,743 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 07:27:47,743 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:47,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:47,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1675687679, now seen corresponding path program 1 times [2022-01-10 07:27:47,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:47,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521811110] [2022-01-10 07:27:47,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:47,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:47,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:47,746 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 07:27:47,747 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 07:28:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:28:02,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 10869 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:28:02,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:28:02,472 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 07:28:02,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:28:02,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:28:02,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521811110] [2022-01-10 07:28:02,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521811110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:28:02,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:28:02,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:28:02,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856340552] [2022-01-10 07:28:02,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:28:02,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:28:02,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:28:02,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:28:02,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:28:02,475 INFO L87 Difference]: Start difference. First operand 217 states and 347 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 07:28:02,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:28:02,513 INFO L93 Difference]: Finished difference Result 428 states and 685 transitions. [2022-01-10 07:28:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:28:02,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 94 [2022-01-10 07:28:02,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:28:02,516 INFO L225 Difference]: With dead ends: 428 [2022-01-10 07:28:02,516 INFO L226 Difference]: Without dead ends: 217 [2022-01-10 07:28:02,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 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 07:28:02,517 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 0 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:28:02,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 689 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:28:02,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-01-10 07:28:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-01-10 07:28:02,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 132 states have (on average 1.4848484848484849) internal successors, (196), 134 states have internal predecessors, (196), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-01-10 07:28:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 346 transitions. [2022-01-10 07:28:02,531 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 346 transitions. Word has length 94 [2022-01-10 07:28:02,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:28:02,531 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 346 transitions. [2022-01-10 07:28:02,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 07:28:02,532 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 346 transitions. [2022-01-10 07:28:02,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 07:28:02,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:28:02,540 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:02,744 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 07:28:02,759 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 07:28:02,759 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:28:02,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:28:02,760 INFO L85 PathProgramCache]: Analyzing trace with hash 123783020, now seen corresponding path program 1 times [2022-01-10 07:28:02,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:28:02,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763888386] [2022-01-10 07:28:02,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:28:02,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:28:02,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:28:02,763 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 07:28:02,764 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 07:28:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:28:17,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 10949 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:28:17,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:28:17,052 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-01-10 07:28:17,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-01-10 07:28:17,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-01-10 07:28:17,115 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-01-10 07:28:17,474 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-10 07:28:17,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:28:17,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:28:17,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763888386] [2022-01-10 07:28:17,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763888386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:28:17,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:28:17,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:28:17,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238253753] [2022-01-10 07:28:17,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:28:17,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:28:17,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:28:17,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:28:17,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:28:17,477 INFO L87 Difference]: Start difference. First operand 217 states and 346 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-01-10 07:28:18,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:28:18,793 INFO L93 Difference]: Finished difference Result 649 states and 1042 transitions. [2022-01-10 07:28:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:28:18,794 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), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 117 [2022-01-10 07:28:18,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:28:18,799 INFO L225 Difference]: With dead ends: 649 [2022-01-10 07:28:18,799 INFO L226 Difference]: Without dead ends: 436 [2022-01-10 07:28:18,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 114 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 07:28:18,803 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 488 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:28:18,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 996 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 07:28:18,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-01-10 07:28:18,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 220. [2022-01-10 07:28:18,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 134 states have (on average 1.4776119402985075) internal successors, (198), 137 states have internal predecessors, (198), 75 states have call successors, (75), 9 states have call predecessors, (75), 10 states have return successors, (77), 75 states have call predecessors, (77), 75 states have call successors, (77) [2022-01-10 07:28:18,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 350 transitions. [2022-01-10 07:28:18,844 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 350 transitions. Word has length 117 [2022-01-10 07:28:18,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:28:18,844 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 350 transitions. [2022-01-10 07:28:18,844 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), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-01-10 07:28:18,844 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 350 transitions. [2022-01-10 07:28:18,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 07:28:18,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:28:18,847 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:19,056 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forcibly destroying the process [2022-01-10 07:28:19,079 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 07:28:19,079 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 07:28:19,080 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:28:19,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:28:19,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1858280641, now seen corresponding path program 1 times [2022-01-10 07:28:19,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:28:19,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115032849] [2022-01-10 07:28:19,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:28:19,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:28:19,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:28:19,083 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 07:28:19,083 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 07:28:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:28:33,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 10966 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:28:33,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:28:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-10 07:28:33,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:28:33,883 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:28:33,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115032849] [2022-01-10 07:28:33,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115032849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:28:33,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:28:33,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:28:33,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863984934] [2022-01-10 07:28:33,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:28:33,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:28:33,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:28:33,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:28:33,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:28:33,884 INFO L87 Difference]: Start difference. First operand 220 states and 350 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 07:28:35,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:28:35,293 INFO L93 Difference]: Finished difference Result 575 states and 970 transitions. [2022-01-10 07:28:35,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:28:35,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 116 [2022-01-10 07:28:35,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:28:35,296 INFO L225 Difference]: With dead ends: 575 [2022-01-10 07:28:35,296 INFO L226 Difference]: Without dead ends: 359 [2022-01-10 07:28:35,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:28:35,298 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 539 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:28:35,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 585 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 07:28:35,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-01-10 07:28:35,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 354. [2022-01-10 07:28:35,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 232 states have (on average 1.3017241379310345) internal successors, (302), 203 states have internal predecessors, (302), 103 states have call successors, (103), 11 states have call predecessors, (103), 18 states have return successors, (161), 143 states have call predecessors, (161), 103 states have call successors, (161) [2022-01-10 07:28:35,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 566 transitions. [2022-01-10 07:28:35,332 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 566 transitions. Word has length 116 [2022-01-10 07:28:35,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:28:35,333 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 566 transitions. [2022-01-10 07:28:35,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 07:28:35,333 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 566 transitions. [2022-01-10 07:28:35,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 07:28:35,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:28:35,337 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:35,543 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forcibly destroying the process [2022-01-10 07:28:35,554 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 07:28:35,554 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 07:28:35,554 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:28:35,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:28:35,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1886780931, now seen corresponding path program 1 times [2022-01-10 07:28:35,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:28:35,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366924692] [2022-01-10 07:28:35,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:28:35,555 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:28:35,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:28:35,556 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 07:28:35,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process