/usr/bin/java -Xmx16000000000 -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-dev-29289db [2021-06-04 22:16:39,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-04 22:16:39,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-04 22:16:39,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-04 22:16:39,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-04 22:16:39,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-04 22:16:39,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-04 22:16:39,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-04 22:16:39,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-04 22:16:39,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-04 22:16:39,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-04 22:16:39,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-04 22:16:39,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-04 22:16:39,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-04 22:16:39,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-04 22:16:39,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-04 22:16:39,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-04 22:16:39,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-04 22:16:39,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-04 22:16:39,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-04 22:16:39,471 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 [2021-06-04 22:16:39,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-04 22:16:39,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-04 22:16:39,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-04 22:16:39,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-04 22:16:39,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-04 22:16:39,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-04 22:16:39,487 INFO L138 SettingsManager]: * Use SBE=true [2021-06-04 22:16:39,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-04 22:16:39,487 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-04 22:16:39,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-04 22:16:39,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-04 22:16:39,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-04 22:16:39,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-04 22:16:39,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-04 22:16:39,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-04 22:16:39,488 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-04 22:16:39,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-04 22:16:39,488 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-04 22:16:39,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-04 22:16:39,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-04 22:16:39,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-04 22:16:39,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-04 22:16:39,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-04 22:16:39,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-04 22:16:39,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-04 22:16:39,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-04 22:16:39,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-04 22:16:39,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-04 22:16:39,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-04 22:16:39,490 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-04 22:16:39,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-04 22:16:39,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-04 22:16:39,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-04 22:16:39,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-04 22:16:39,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-04 22:16:39,714 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-04 22:16:39,714 INFO L275 PluginConnector]: CDTParser initialized [2021-06-04 22:16:39,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-06-04 22:16:39,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e7a61a4b/7ca0ddbc995c43e8acbf7cd40ab7ea58/FLAG06a8667c1 [2021-06-04 22:16:40,111 INFO L306 CDTParser]: Found 1 translation units. [2021-06-04 22:16:40,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-06-04 22:16:40,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e7a61a4b/7ca0ddbc995c43e8acbf7cd40ab7ea58/FLAG06a8667c1 [2021-06-04 22:16:40,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e7a61a4b/7ca0ddbc995c43e8acbf7cd40ab7ea58 [2021-06-04 22:16:40,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-04 22:16:40,484 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-04 22:16:40,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-04 22:16:40,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-04 22:16:40,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-04 22:16:40,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 10:16:40" (1/1) ... [2021-06-04 22:16:40,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61365a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 10:16:40, skipping insertion in model container [2021-06-04 22:16:40,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 10:16:40" (1/1) ... [2021-06-04 22:16:40,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-04 22:16:40,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-04 22:16:40,731 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] [2021-06-04 22:16:40,734 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] [2021-06-04 22:16:40,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-04 22:16:40,743 INFO L203 MainTranslator]: Completed pre-run [2021-06-04 22:16:40,764 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] [2021-06-04 22:16:40,765 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] [2021-06-04 22:16:40,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-04 22:16:40,827 INFO L208 MainTranslator]: Completed translation [2021-06-04 22:16:40,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 10:16:40 WrapperNode [2021-06-04 22:16:40,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-04 22:16:40,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-04 22:16:40,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-04 22:16:40,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-04 22:16:40,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 10:16:40" (1/1) ... [2021-06-04 22:16:40,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 10:16:40" (1/1) ... [2021-06-04 22:16:40,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-04 22:16:40,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-04 22:16:40,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-04 22:16:40,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-04 22:16:40,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 10:16:40" (1/1) ... [2021-06-04 22:16:40,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 10:16:40" (1/1) ... [2021-06-04 22:16:40,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 10:16:40" (1/1) ... [2021-06-04 22:16:40,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 10:16:40" (1/1) ... [2021-06-04 22:16:40,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 10:16:40" (1/1) ... [2021-06-04 22:16:40,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 10:16:40" (1/1) ... [2021-06-04 22:16:40,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 10:16:40" (1/1) ... [2021-06-04 22:16:40,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-04 22:16:40,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-04 22:16:40,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-04 22:16:40,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-04 22:16:40,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 10:16:40" (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 [2021-06-04 22:16:40,972 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-06-04 22:16:40,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-06-04 22:16:40,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-04 22:16:40,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-04 22:16:40,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-04 22:16:40,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-04 22:16:40,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-04 22:16:40,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-04 22:16:40,975 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-04 22:16:41,499 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-04 22:16:41,499 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-04 22:16:41,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 10:16:41 BoogieIcfgContainer [2021-06-04 22:16:41,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-04 22:16:41,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-04 22:16:41,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-04 22:16:41,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-04 22:16:41,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 10:16:40" (1/3) ... [2021-06-04 22:16:41,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10170668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 10:16:41, skipping insertion in model container [2021-06-04 22:16:41,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 10:16:40" (2/3) ... [2021-06-04 22:16:41,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10170668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 10:16:41, skipping insertion in model container [2021-06-04 22:16:41,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 10:16:41" (3/3) ... [2021-06-04 22:16:41,505 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2021-06-04 22:16:41,509 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-04 22:16:41,509 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-04 22:16:41,509 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-04 22:16:41,510 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-04 22:16:41,523 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,528 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,528 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,529 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,529 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,530 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,530 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,530 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 22:16:41,532 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-04 22:16:41,546 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-04 22:16:41,558 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-04 22:16:41,559 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-04 22:16:41,559 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-04 22:16:41,559 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-04 22:16:41,559 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-04 22:16:41,559 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-04 22:16:41,559 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-04 22:16:41,559 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-04 22:16:41,565 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 50 transitions, 105 flow [2021-06-04 22:16:41,578 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 228 states, 224 states have (on average 1.90625) internal successors, (427), 227 states have internal predecessors, (427), 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) [2021-06-04 22:16:41,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 228 states, 224 states have (on average 1.90625) internal successors, (427), 227 states have internal predecessors, (427), 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) [2021-06-04 22:16:41,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-04 22:16:41,584 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 22:16:41,585 INFO L521 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] [2021-06-04 22:16:41,585 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 22:16:41,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 22:16:41,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1797871661, now seen corresponding path program 1 times [2021-06-04 22:16:41,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 22:16:41,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153251112] [2021-06-04 22:16:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 22:16:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 22:16:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 22:16:41,719 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 22:16:41,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153251112] [2021-06-04 22:16:41,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153251112] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 22:16:41,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 22:16:41,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-04 22:16:41,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686851606] [2021-06-04 22:16:41,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-04 22:16:41,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 22:16:41,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-04 22:16:41,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-04 22:16:41,733 INFO L87 Difference]: Start difference. First operand has 228 states, 224 states have (on average 1.90625) internal successors, (427), 227 states have internal predecessors, (427), 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) [2021-06-04 22:16:41,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 22:16:41,753 INFO L93 Difference]: Finished difference Result 162 states and 285 transitions. [2021-06-04 22:16:41,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-04 22:16:41,754 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 [2021-06-04 22:16:41,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 22:16:41,760 INFO L225 Difference]: With dead ends: 162 [2021-06-04 22:16:41,760 INFO L226 Difference]: Without dead ends: 126 [2021-06-04 22:16:41,761 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-04 22:16:41,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-06-04 22:16:41,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-06-04 22:16:41,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.776) internal successors, (222), 125 states have internal predecessors, (222), 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) [2021-06-04 22:16:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 222 transitions. [2021-06-04 22:16:41,787 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 222 transitions. Word has length 23 [2021-06-04 22:16:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 22:16:41,787 INFO L482 AbstractCegarLoop]: Abstraction has 126 states and 222 transitions. [2021-06-04 22:16:41,787 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) [2021-06-04 22:16:41,787 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 222 transitions. [2021-06-04 22:16:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-06-04 22:16:41,788 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 22:16:41,788 INFO L521 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] [2021-06-04 22:16:41,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-04 22:16:41,789 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 22:16:41,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 22:16:41,789 INFO L82 PathProgramCache]: Analyzing trace with hash 363008193, now seen corresponding path program 1 times [2021-06-04 22:16:41,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 22:16:41,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725443230] [2021-06-04 22:16:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 22:16:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 22:16:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 22:16:41,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 22:16:41,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725443230] [2021-06-04 22:16:41,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725443230] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 22:16:41,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 22:16:41,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-04 22:16:41,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750947452] [2021-06-04 22:16:41,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-04 22:16:41,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 22:16:41,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-04 22:16:41,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-04 22:16:41,846 INFO L87 Difference]: Start difference. First operand 126 states and 222 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) [2021-06-04 22:16:41,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 22:16:41,857 INFO L93 Difference]: Finished difference Result 115 states and 199 transitions. [2021-06-04 22:16:41,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-04 22:16:41,858 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 [2021-06-04 22:16:41,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 22:16:41,859 INFO L225 Difference]: With dead ends: 115 [2021-06-04 22:16:41,859 INFO L226 Difference]: Without dead ends: 110 [2021-06-04 22:16:41,860 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-04 22:16:41,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-06-04 22:16:41,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-06-04 22:16:41,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.6972477064220184) internal successors, (185), 109 states have internal predecessors, (185), 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) [2021-06-04 22:16:41,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 185 transitions. [2021-06-04 22:16:41,865 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 185 transitions. Word has length 29 [2021-06-04 22:16:41,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 22:16:41,866 INFO L482 AbstractCegarLoop]: Abstraction has 110 states and 185 transitions. [2021-06-04 22:16:41,866 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) [2021-06-04 22:16:41,866 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 185 transitions. [2021-06-04 22:16:41,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-06-04 22:16:41,866 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 22:16:41,867 INFO L521 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] [2021-06-04 22:16:41,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-04 22:16:41,867 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 22:16:41,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 22:16:41,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1406188349, now seen corresponding path program 1 times [2021-06-04 22:16:41,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 22:16:41,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834862925] [2021-06-04 22:16:41,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 22:16:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 22:16:41,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 22:16:41,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 22:16:41,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834862925] [2021-06-04 22:16:41,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834862925] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 22:16:41,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 22:16:41,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-04 22:16:41,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492728423] [2021-06-04 22:16:41,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-04 22:16:41,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 22:16:41,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-04 22:16:41,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-04 22:16:41,925 INFO L87 Difference]: Start difference. First operand 110 states and 185 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) [2021-06-04 22:16:41,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 22:16:41,942 INFO L93 Difference]: Finished difference Result 107 states and 179 transitions. [2021-06-04 22:16:41,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-04 22:16:41,942 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 [2021-06-04 22:16:41,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 22:16:41,944 INFO L225 Difference]: With dead ends: 107 [2021-06-04 22:16:41,944 INFO L226 Difference]: Without dead ends: 107 [2021-06-04 22:16:41,944 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-04 22:16:41,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-06-04 22:16:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2021-06-04 22:16:41,949 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) [2021-06-04 22:16:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 173 transitions. [2021-06-04 22:16:41,950 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 173 transitions. Word has length 33 [2021-06-04 22:16:41,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 22:16:41,950 INFO L482 AbstractCegarLoop]: Abstraction has 104 states and 173 transitions. [2021-06-04 22:16:41,950 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) [2021-06-04 22:16:41,950 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 173 transitions. [2021-06-04 22:16:41,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-06-04 22:16:41,951 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 22:16:41,951 INFO L521 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] [2021-06-04 22:16:41,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-04 22:16:41,951 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-04 22:16:41,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 22:16:41,952 INFO L82 PathProgramCache]: Analyzing trace with hash 251057858, now seen corresponding path program 1 times [2021-06-04 22:16:41,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 22:16:41,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448074315] [2021-06-04 22:16:41,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 22:16:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 22:16:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 22:16:42,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 22:16:42,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448074315] [2021-06-04 22:16:42,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448074315] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 22:16:42,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 22:16:42,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-04 22:16:42,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579760753] [2021-06-04 22:16:42,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-04 22:16:42,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 22:16:42,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-04 22:16:42,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-04 22:16:42,011 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) [2021-06-04 22:16:42,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 22:16:42,021 INFO L93 Difference]: Finished difference Result 101 states and 168 transitions. [2021-06-04 22:16:42,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-04 22:16:42,029 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 [2021-06-04 22:16:42,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 22:16:42,030 INFO L225 Difference]: With dead ends: 101 [2021-06-04 22:16:42,030 INFO L226 Difference]: Without dead ends: 0 [2021-06-04 22:16:42,031 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-04 22:16:42,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-04 22:16:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-04 22:16:42,031 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) [2021-06-04 22:16:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-04 22:16:42,031 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-06-04 22:16:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 22:16:42,031 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-04 22:16:42,032 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) [2021-06-04 22:16:42,032 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-04 22:16:42,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-04 22:16:42,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-04 22:16:42,034 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-04 22:16:42,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 10:16:42 BasicIcfg [2021-06-04 22:16:42,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-04 22:16:42,037 INFO L168 Benchmark]: Toolchain (without parser) took 1551.88 ms. Allocated memory is still 362.8 MB. Free memory was 325.9 MB in the beginning and 217.7 MB in the end (delta: 108.2 MB). Peak memory consumption was 108.0 MB. Max. memory is 16.0 GB. [2021-06-04 22:16:42,038 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 362.8 MB. Free memory was 343.6 MB in the beginning and 343.4 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-04 22:16:42,041 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.44 ms. Allocated memory is still 362.8 MB. Free memory was 325.7 MB in the beginning and 325.6 MB in the end (delta: 100.4 kB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. [2021-06-04 22:16:42,042 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.50 ms. Allocated memory is still 362.8 MB. Free memory was 325.6 MB in the beginning and 323.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-04 22:16:42,042 INFO L168 Benchmark]: Boogie Preprocessor took 27.72 ms. Allocated memory is still 362.8 MB. Free memory was 323.6 MB in the beginning and 322.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-04 22:16:42,042 INFO L168 Benchmark]: RCFGBuilder took 597.09 ms. Allocated memory is still 362.8 MB. Free memory was 322.5 MB in the beginning and 277.4 MB in the end (delta: 45.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.0 GB. [2021-06-04 22:16:42,042 INFO L168 Benchmark]: TraceAbstraction took 534.33 ms. Allocated memory is still 362.8 MB. Free memory was 277.4 MB in the beginning and 217.7 MB in the end (delta: 59.8 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.0 GB. [2021-06-04 22:16:42,048 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 362.8 MB. Free memory was 343.6 MB in the beginning and 343.4 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 342.44 ms. Allocated memory is still 362.8 MB. Free memory was 325.7 MB in the beginning and 325.6 MB in the end (delta: 100.4 kB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 46.50 ms. Allocated memory is still 362.8 MB. Free memory was 325.6 MB in the beginning and 323.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.72 ms. Allocated memory is still 362.8 MB. Free memory was 323.6 MB in the beginning and 322.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 597.09 ms. Allocated memory is still 362.8 MB. Free memory was 322.5 MB in the beginning and 277.4 MB in the end (delta: 45.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 534.33 ms. Allocated memory is still 362.8 MB. Free memory was 277.4 MB in the beginning and 217.7 MB in the end (delta: 59.8 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.0 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 with 1 thread instances CFG has 3 procedures, 60 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 475.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 8.5ms, AutomataDifference: 91.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 178 SDtfs, 46 SDslu, 168 SDs, 0 SdLazy, 23 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=228occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.6ms SsaConstructionTime, 42.6ms SatisfiabilityAnalysisTime, 178.4ms InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 295 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...