/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 16:28:28,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 16:28:28,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 16:28:28,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 16:28:28,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 16:28:28,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 16:28:28,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 16:28:28,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 16:28:28,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 16:28:28,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 16:28:28,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 16:28:28,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 16:28:28,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 16:28:28,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 16:28:28,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 16:28:28,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 16:28:28,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 16:28:28,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 16:28:28,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 16:28:28,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 16:28:28,175 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-07-09 16:28:28,224 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 16:28:28,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 16:28:28,224 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 16:28:28,224 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 16:28:28,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 16:28:28,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 16:28:28,227 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 16:28:28,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 16:28:28,227 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 16:28:28,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 16:28:28,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 16:28:28,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 16:28:28,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 16:28:28,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 16:28:28,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 16:28:28,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 16:28:28,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 16:28:28,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 16:28:28,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 16:28:28,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 16:28:28,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 16:28:28,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 16:28:28,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 16:28:28,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 16:28:28,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 16:28:28,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 16:28:28,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 16:28:28,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 16:28:28,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 16:28:28,230 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 16:28:28,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 16:28:28,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 16:28:28,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 16:28:28,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 16:28:28,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 16:28:28,521 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 16:28:28,521 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 16:28:28,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-07-09 16:28:28,558 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ea64c10f/899ae714b17e48fd9e0283b2420ec426/FLAGc8e2bc147 [2021-07-09 16:28:28,994 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 16:28:28,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-07-09 16:28:29,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ea64c10f/899ae714b17e48fd9e0283b2420ec426/FLAGc8e2bc147 [2021-07-09 16:28:29,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ea64c10f/899ae714b17e48fd9e0283b2420ec426 [2021-07-09 16:28:29,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 16:28:29,026 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 16:28:29,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 16:28:29,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 16:28:29,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 16:28:29,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:28:29" (1/1) ... [2021-07-09 16:28:29,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@599c2605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:29, skipping insertion in model container [2021-07-09 16:28:29,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:28:29" (1/1) ... [2021-07-09 16:28:29,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 16:28:29,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 16:28:29,327 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2021-07-09 16:28:29,338 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2021-07-09 16:28:29,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:28:29,348 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 16:28:29,384 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2021-07-09 16:28:29,395 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2021-07-09 16:28:29,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:28:29,420 INFO L208 MainTranslator]: Completed translation [2021-07-09 16:28:29,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:29 WrapperNode [2021-07-09 16:28:29,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 16:28:29,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 16:28:29,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 16:28:29,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 16:28:29,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:29" (1/1) ... [2021-07-09 16:28:29,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:29" (1/1) ... [2021-07-09 16:28:29,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 16:28:29,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 16:28:29,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 16:28:29,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 16:28:29,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:29" (1/1) ... [2021-07-09 16:28:29,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:29" (1/1) ... [2021-07-09 16:28:29,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:29" (1/1) ... [2021-07-09 16:28:29,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:29" (1/1) ... [2021-07-09 16:28:29,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:29" (1/1) ... [2021-07-09 16:28:29,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:29" (1/1) ... [2021-07-09 16:28:29,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:29" (1/1) ... [2021-07-09 16:28:29,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 16:28:29,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 16:28:29,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 16:28:29,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 16:28:29,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 16:28:29,520 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-07-09 16:28:29,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-07-09 16:28:29,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 16:28:29,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 16:28:29,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 16:28:29,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 16:28:29,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 16:28:29,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 16:28:29,522 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 16:28:29,894 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 16:28:29,894 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-09 16:28:29,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:28:29 BoogieIcfgContainer [2021-07-09 16:28:29,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 16:28:29,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 16:28:29,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 16:28:29,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 16:28:29,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 04:28:29" (1/3) ... [2021-07-09 16:28:29,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6e6652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:28:29, skipping insertion in model container [2021-07-09 16:28:29,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:28:29" (2/3) ... [2021-07-09 16:28:29,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6e6652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:28:29, skipping insertion in model container [2021-07-09 16:28:29,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:28:29" (3/3) ... [2021-07-09 16:28:29,900 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2021-07-09 16:28:29,904 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 16:28:29,904 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 16:28:29,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-09 16:28:29,905 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 16:28:29,918 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,919 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,919 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,919 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,922 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,922 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,922 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,922 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,923 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,923 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,923 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,923 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,924 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,924 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:28:29,926 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-09 16:28:29,940 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-09 16:28:29,951 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 16:28:29,951 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 16:28:29,951 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 16:28:29,951 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 16:28:29,951 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 16:28:29,951 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 16:28:29,951 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 16:28:29,951 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr1Thread1of1ForFork0======== [2021-07-09 16:28:29,957 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 50 transitions, 105 flow [2021-07-09 16:28:29,969 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 144 states, 142 states have (on average 1.795774647887324) internal successors, (255), 143 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:29,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 142 states have (on average 1.795774647887324) internal successors, (255), 143 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:29,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-07-09 16:28:29,975 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:28:29,975 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:28:29,975 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:28:29,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:28:29,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1797871661, now seen corresponding path program 1 times [2021-07-09 16:28:29,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:28:29,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614319700] [2021-07-09 16:28:29,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:28:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:28:30,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:28:30,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:28:30,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614319700] [2021-07-09 16:28:30,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614319700] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:28:30,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:28:30,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-09 16:28:30,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874078638] [2021-07-09 16:28:30,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 16:28:30,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:28:30,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 16:28:30,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 16:28:30,198 INFO L87 Difference]: Start difference. First operand has 144 states, 142 states have (on average 1.795774647887324) internal successors, (255), 143 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:28:30,215 INFO L93 Difference]: Finished difference Result 78 states and 126 transitions. [2021-07-09 16:28:30,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 16:28:30,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-07-09 16:28:30,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:28:30,220 INFO L225 Difference]: With dead ends: 78 [2021-07-09 16:28:30,220 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 16:28:30,222 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 16:28:30,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 16:28:30,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 16:28:30,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 16:28:30,236 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-07-09 16:28:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:28:30,236 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 16:28:30,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,237 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 16:28:30,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 16:28:30,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 16:28:30,237 INFO L301 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE (1/2) [2021-07-09 16:28:30,239 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-07-09 16:28:30,244 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 16:28:30,245 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 16:28:30,246 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 16:28:30,247 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 16:28:30,247 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 16:28:30,247 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 16:28:30,250 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 16:28:30,251 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 16:28:30,252 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 50 transitions, 105 flow [2021-07-09 16:28:30,258 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 138 states, 136 states have (on average 1.8823529411764706) internal successors, (256), 137 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 136 states have (on average 1.8823529411764706) internal successors, (256), 137 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-07-09 16:28:30,262 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:28:30,262 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:28:30,262 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:28:30,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:28:30,266 INFO L82 PathProgramCache]: Analyzing trace with hash 362978402, now seen corresponding path program 1 times [2021-07-09 16:28:30,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:28:30,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962709873] [2021-07-09 16:28:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:28:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:28:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:28:30,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:28:30,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962709873] [2021-07-09 16:28:30,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962709873] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:28:30,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:28:30,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-09 16:28:30,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704784213] [2021-07-09 16:28:30,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-09 16:28:30,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:28:30,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-09 16:28:30,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-09 16:28:30,311 INFO L87 Difference]: Start difference. First operand has 138 states, 136 states have (on average 1.8823529411764706) internal successors, (256), 137 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:28:30,323 INFO L93 Difference]: Finished difference Result 138 states and 246 transitions. [2021-07-09 16:28:30,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 16:28:30,323 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-07-09 16:28:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:28:30,328 INFO L225 Difference]: With dead ends: 138 [2021-07-09 16:28:30,328 INFO L226 Difference]: Without dead ends: 138 [2021-07-09 16:28:30,328 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-09 16:28:30,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-07-09 16:28:30,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-07-09 16:28:30,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 136 states have (on average 1.8088235294117647) internal successors, (246), 137 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 246 transitions. [2021-07-09 16:28:30,354 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 246 transitions. Word has length 29 [2021-07-09 16:28:30,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:28:30,354 INFO L482 AbstractCegarLoop]: Abstraction has 138 states and 246 transitions. [2021-07-09 16:28:30,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,355 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 246 transitions. [2021-07-09 16:28:30,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-07-09 16:28:30,356 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:28:30,356 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:28:30,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 16:28:30,357 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:28:30,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:28:30,357 INFO L82 PathProgramCache]: Analyzing trace with hash 363008193, now seen corresponding path program 1 times [2021-07-09 16:28:30,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:28:30,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597923782] [2021-07-09 16:28:30,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:28:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:28:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:28:30,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:28:30,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597923782] [2021-07-09 16:28:30,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597923782] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:28:30,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:28:30,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 16:28:30,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809487531] [2021-07-09 16:28:30,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 16:28:30,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:28:30,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 16:28:30,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 16:28:30,424 INFO L87 Difference]: Start difference. First operand 138 states and 246 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:28:30,438 INFO L93 Difference]: Finished difference Result 128 states and 225 transitions. [2021-07-09 16:28:30,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 16:28:30,438 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-07-09 16:28:30,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:28:30,441 INFO L225 Difference]: With dead ends: 128 [2021-07-09 16:28:30,441 INFO L226 Difference]: Without dead ends: 122 [2021-07-09 16:28:30,442 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 16:28:30,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-07-09 16:28:30,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-07-09 16:28:30,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 120 states have (on average 1.7333333333333334) internal successors, (208), 121 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 208 transitions. [2021-07-09 16:28:30,453 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 208 transitions. Word has length 29 [2021-07-09 16:28:30,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:28:30,454 INFO L482 AbstractCegarLoop]: Abstraction has 122 states and 208 transitions. [2021-07-09 16:28:30,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,454 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 208 transitions. [2021-07-09 16:28:30,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-07-09 16:28:30,455 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:28:30,455 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:28:30,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 16:28:30,455 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:28:30,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:28:30,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1406188349, now seen corresponding path program 1 times [2021-07-09 16:28:30,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:28:30,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304671918] [2021-07-09 16:28:30,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:28:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:28:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:28:30,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:28:30,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304671918] [2021-07-09 16:28:30,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304671918] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:28:30,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:28:30,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 16:28:30,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515312939] [2021-07-09 16:28:30,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 16:28:30,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:28:30,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 16:28:30,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-09 16:28:30,550 INFO L87 Difference]: Start difference. First operand 122 states and 208 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:28:30,610 INFO L93 Difference]: Finished difference Result 116 states and 196 transitions. [2021-07-09 16:28:30,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 16:28:30,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-07-09 16:28:30,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:28:30,611 INFO L225 Difference]: With dead ends: 116 [2021-07-09 16:28:30,612 INFO L226 Difference]: Without dead ends: 107 [2021-07-09 16:28:30,612 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-09 16:28:30,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-07-09 16:28:30,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2021-07-09 16:28:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.6796116504854368) internal successors, (173), 103 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 173 transitions. [2021-07-09 16:28:30,615 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 173 transitions. Word has length 33 [2021-07-09 16:28:30,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:28:30,615 INFO L482 AbstractCegarLoop]: Abstraction has 104 states and 173 transitions. [2021-07-09 16:28:30,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,616 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 173 transitions. [2021-07-09 16:28:30,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-07-09 16:28:30,616 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:28:30,616 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:28:30,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 16:28:30,617 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:28:30,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:28:30,617 INFO L82 PathProgramCache]: Analyzing trace with hash 251057858, now seen corresponding path program 1 times [2021-07-09 16:28:30,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:28:30,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409132107] [2021-07-09 16:28:30,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:28:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:28:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:28:30,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:28:30,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409132107] [2021-07-09 16:28:30,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409132107] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:28:30,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:28:30,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 16:28:30,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341546090] [2021-07-09 16:28:30,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 16:28:30,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:28:30,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 16:28:30,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 16:28:30,689 INFO L87 Difference]: Start difference. First operand 104 states and 173 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:28:30,708 INFO L93 Difference]: Finished difference Result 101 states and 168 transitions. [2021-07-09 16:28:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 16:28:30,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-07-09 16:28:30,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:28:30,709 INFO L225 Difference]: With dead ends: 101 [2021-07-09 16:28:30,709 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 16:28:30,709 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 16:28:30,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 16:28:30,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 16:28:30,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 16:28:30,709 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-07-09 16:28:30,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:28:30,710 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 16:28:30,710 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:28:30,710 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 16:28:30,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 16:28:30,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 16:28:30,710 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/2) [2021-07-09 16:28:30,710 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 16:28:30,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 04:28:30 BasicIcfg [2021-07-09 16:28:30,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 16:28:30,713 INFO L168 Benchmark]: Toolchain (without parser) took 1687.00 ms. Allocated memory is still 190.8 MB. Free memory was 154.4 MB in the beginning and 157.4 MB in the end (delta: -3.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 16:28:30,713 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 190.8 MB. Free memory is still 172.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 16:28:30,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.30 ms. Allocated memory is still 190.8 MB. Free memory was 154.2 MB in the beginning and 164.4 MB in the end (delta: -10.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:30,714 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.33 ms. Allocated memory is still 190.8 MB. Free memory was 164.4 MB in the beginning and 162.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:30,714 INFO L168 Benchmark]: Boogie Preprocessor took 15.07 ms. Allocated memory is still 190.8 MB. Free memory was 162.8 MB in the beginning and 161.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:30,715 INFO L168 Benchmark]: RCFGBuilder took 433.57 ms. Allocated memory is still 190.8 MB. Free memory was 161.3 MB in the beginning and 117.2 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:28:30,715 INFO L168 Benchmark]: TraceAbstraction took 815.68 ms. Allocated memory is still 190.8 MB. Free memory was 116.7 MB in the beginning and 157.4 MB in the end (delta: -40.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 16:28:30,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 190.8 MB. Free memory is still 172.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 389.30 ms. Allocated memory is still 190.8 MB. Free memory was 154.2 MB in the beginning and 164.4 MB in the end (delta: -10.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.33 ms. Allocated memory is still 190.8 MB. Free memory was 164.4 MB in the beginning and 162.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 15.07 ms. Allocated memory is still 190.8 MB. Free memory was 162.8 MB in the beginning and 161.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 433.57 ms. Allocated memory is still 190.8 MB. Free memory was 161.3 MB in the beginning and 117.2 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 815.68 ms. Allocated memory is still 190.8 MB. Free memory was 116.7 MB in the beginning and 157.4 MB in the end (delta: -40.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 707]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 721]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1Thread1of1ForFork0 with 1 thread instances CFG has 3 procedures, 60 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 288.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.3ms, AutomataDifference: 37.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 12 SDslu, 10 SDs, 0 SdLazy, 1 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.9ms SsaConstructionTime, 34.2ms SatisfiabilityAnalysisTime, 104.6ms InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 46 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 60 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 466.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 7.1ms, AutomataDifference: 120.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 175 SDtfs, 43 SDslu, 108 SDs, 0 SdLazy, 15 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 40.4ms AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.3ms SsaConstructionTime, 37.4ms SatisfiabilityAnalysisTime, 191.2ms InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 277 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...