/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 14:57:13,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 14:57:13,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 14:57:13,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 14:57:13,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 14:57:13,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 14:57:13,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 14:57:13,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 14:57:13,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 14:57:13,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 14:57:13,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 14:57:13,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 14:57:13,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 14:57:13,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 14:57:13,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 14:57:13,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 14:57:13,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 14:57:13,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 14:57:13,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 14:57:13,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 14:57:13,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 14:57:13,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 14:57:13,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 14:57:13,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 14:57:13,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 14:57:13,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 14:57:13,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 14:57:13,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 14:57:13,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 14:57:13,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 14:57:13,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 14:57:13,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 14:57:13,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 14:57:13,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 14:57:13,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 14:57:13,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 14:57:13,361 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-11-09 14:57:13,443 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 14:57:13,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 14:57:13,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 14:57:13,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 14:57:13,448 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 14:57:13,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 14:57:13,448 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 14:57:13,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 14:57:13,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 14:57:13,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 14:57:13,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 14:57:13,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 14:57:13,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 14:57:13,452 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 14:57:13,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 14:57:13,452 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 14:57:13,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 14:57:13,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 14:57:13,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 14:57:13,453 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 14:57:13,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 14:57:13,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 14:57:13,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 14:57:13,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 14:57:13,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 14:57:13,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 14:57:13,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 14:57:13,455 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 14:57:13,455 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 14:57:13,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 14:57:13,456 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 14:57:13,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 14:57:13,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 14:57:13,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 14:57:13,961 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 14:57:13,961 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 14:57:13,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-11-09 14:57:14,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25d65db0/5c25ccef4ae5424ab6bb64a2aa18237d/FLAG456b4328f [2020-11-09 14:57:14,691 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 14:57:14,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-11-09 14:57:14,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25d65db0/5c25ccef4ae5424ab6bb64a2aa18237d/FLAG456b4328f [2020-11-09 14:57:14,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25d65db0/5c25ccef4ae5424ab6bb64a2aa18237d [2020-11-09 14:57:14,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 14:57:14,980 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 14:57:14,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 14:57:14,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 14:57:14,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 14:57:14,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:57:14" (1/1) ... [2020-11-09 14:57:15,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@361d9810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:57:14, skipping insertion in model container [2020-11-09 14:57:15,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:57:14" (1/1) ... [2020-11-09 14:57:15,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 14:57:15,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 14:57:15,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 14:57:15,428 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 14:57:15,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 14:57:15,645 INFO L208 MainTranslator]: Completed translation [2020-11-09 14:57:15,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:57:15 WrapperNode [2020-11-09 14:57:15,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 14:57:15,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 14:57:15,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 14:57:15,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 14:57:15,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:57:15" (1/1) ... [2020-11-09 14:57:15,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:57:15" (1/1) ... [2020-11-09 14:57:15,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 14:57:15,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 14:57:15,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 14:57:15,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 14:57:15,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:57:15" (1/1) ... [2020-11-09 14:57:15,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:57:15" (1/1) ... [2020-11-09 14:57:15,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:57:15" (1/1) ... [2020-11-09 14:57:15,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:57:15" (1/1) ... [2020-11-09 14:57:15,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:57:15" (1/1) ... [2020-11-09 14:57:15,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:57:15" (1/1) ... [2020-11-09 14:57:15,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:57:15" (1/1) ... [2020-11-09 14:57:15,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 14:57:15,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 14:57:15,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 14:57:15,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 14:57:15,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:57:15" (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 [2020-11-09 14:57:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-09 14:57:15,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-09 14:57:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 14:57:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 14:57:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 14:57:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 14:57:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 14:57:15,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 14:57:15,913 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 14:57:16,852 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 14:57:16,853 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-09 14:57:16,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:57:16 BoogieIcfgContainer [2020-11-09 14:57:16,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 14:57:16,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 14:57:16,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 14:57:16,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 14:57:16,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:57:14" (1/3) ... [2020-11-09 14:57:16,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369d5248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:57:16, skipping insertion in model container [2020-11-09 14:57:16,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:57:15" (2/3) ... [2020-11-09 14:57:16,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369d5248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:57:16, skipping insertion in model container [2020-11-09 14:57:16,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:57:16" (3/3) ... [2020-11-09 14:57:16,865 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2020-11-09 14:57:16,880 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 14:57:16,881 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 14:57:16,885 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-09 14:57:16,886 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 14:57:16,912 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,913 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,913 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,913 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,913 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,914 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,914 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,914 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,915 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,916 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,916 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,916 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,916 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,916 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,917 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,917 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,917 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,917 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,918 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,918 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,918 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,918 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,919 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,919 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,919 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,922 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,922 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,922 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,923 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,924 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,924 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,926 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,927 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,927 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,928 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,928 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,928 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:57:16,934 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 14:57:16,946 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 14:57:16,968 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 14:57:16,969 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 14:57:16,969 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 14:57:16,969 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 14:57:16,969 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 14:57:16,969 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 14:57:16,970 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 14:57:16,970 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 14:57:16,981 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 14:57:16,982 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 47 transitions, 99 flow [2020-11-09 14:57:16,986 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 47 transitions, 99 flow [2020-11-09 14:57:16,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 47 transitions, 99 flow [2020-11-09 14:57:17,021 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2020-11-09 14:57:17,022 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 14:57:17,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2020-11-09 14:57:17,027 INFO L116 LiptonReduction]: Number of co-enabled transitions 378 [2020-11-09 14:57:17,702 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-11-09 14:57:19,041 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 14:57:19,532 WARN L194 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-11-09 14:57:19,830 WARN L194 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-11-09 14:57:20,115 INFO L131 LiptonReduction]: Checked pairs total: 979 [2020-11-09 14:57:20,115 INFO L133 LiptonReduction]: Total number of compositions: 32 [2020-11-09 14:57:20,123 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 16 transitions, 37 flow [2020-11-09 14:57:20,132 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-11-09 14:57:20,134 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-09 14:57:20,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-09 14:57:20,139 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:57:20,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-09 14:57:20,140 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:57:20,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:57:20,147 INFO L82 PathProgramCache]: Analyzing trace with hash 363609204, now seen corresponding path program 1 times [2020-11-09 14:57:20,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:57:20,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405059771] [2020-11-09 14:57:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:57:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:57:20,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 14:57:20,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405059771] [2020-11-09 14:57:20,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 14:57:20,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 14:57:20,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1864501240] [2020-11-09 14:57:20,355 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:57:20,358 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:57:20,371 INFO L252 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-11-09 14:57:20,371 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:57:20,376 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:57:20,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 14:57:20,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:57:20,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 14:57:20,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 14:57:20,396 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-11-09 14:57:20,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:57:20,424 INFO L93 Difference]: Finished difference Result 34 states and 59 transitions. [2020-11-09 14:57:20,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 14:57:20,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-09 14:57:20,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:57:20,434 INFO L225 Difference]: With dead ends: 34 [2020-11-09 14:57:20,435 INFO L226 Difference]: Without dead ends: 32 [2020-11-09 14:57:20,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 14:57:20,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-09 14:57:20,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-09 14:57:20,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-09 14:57:20,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 56 transitions. [2020-11-09 14:57:20,476 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 56 transitions. Word has length 5 [2020-11-09 14:57:20,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:57:20,476 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 56 transitions. [2020-11-09 14:57:20,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 14:57:20,476 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 56 transitions. [2020-11-09 14:57:20,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-09 14:57:20,477 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:57:20,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:57:20,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 14:57:20,478 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:57:20,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:57:20,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1542295268, now seen corresponding path program 1 times [2020-11-09 14:57:20,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:57:20,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815532212] [2020-11-09 14:57:20,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:57:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:57:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 14:57:20,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815532212] [2020-11-09 14:57:20,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 14:57:20,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 14:57:20,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1447340117] [2020-11-09 14:57:20,538 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:57:20,539 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:57:20,541 INFO L252 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-11-09 14:57:20,541 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:57:20,542 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:57:20,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 14:57:20,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:57:20,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 14:57:20,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 14:57:20,545 INFO L87 Difference]: Start difference. First operand 32 states and 56 transitions. Second operand 3 states. [2020-11-09 14:57:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:57:20,554 INFO L93 Difference]: Finished difference Result 27 states and 45 transitions. [2020-11-09 14:57:20,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 14:57:20,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-09 14:57:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:57:20,556 INFO L225 Difference]: With dead ends: 27 [2020-11-09 14:57:20,556 INFO L226 Difference]: Without dead ends: 24 [2020-11-09 14:57:20,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 14:57:20,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-09 14:57:20,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-09 14:57:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-09 14:57:20,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2020-11-09 14:57:20,565 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 37 transitions. Word has length 7 [2020-11-09 14:57:20,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:57:20,566 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 37 transitions. [2020-11-09 14:57:20,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 14:57:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 37 transitions. [2020-11-09 14:57:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 14:57:20,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:57:20,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:57:20,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 14:57:20,567 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:57:20,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:57:20,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1242480641, now seen corresponding path program 1 times [2020-11-09 14:57:20,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:57:20,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604693752] [2020-11-09 14:57:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:57:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:57:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 14:57:20,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604693752] [2020-11-09 14:57:20,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 14:57:20,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 14:57:20,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1947314366] [2020-11-09 14:57:20,661 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:57:20,662 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:57:20,665 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-11-09 14:57:20,665 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:57:20,679 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:57:20,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 14:57:20,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:57:20,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 14:57:20,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 14:57:20,680 INFO L87 Difference]: Start difference. First operand 24 states and 37 transitions. Second operand 4 states. [2020-11-09 14:57:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:57:20,705 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2020-11-09 14:57:20,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 14:57:20,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 14:57:20,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:57:20,706 INFO L225 Difference]: With dead ends: 18 [2020-11-09 14:57:20,706 INFO L226 Difference]: Without dead ends: 18 [2020-11-09 14:57:20,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 14:57:20,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-09 14:57:20,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-09 14:57:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-09 14:57:20,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2020-11-09 14:57:20,710 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 9 [2020-11-09 14:57:20,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:57:20,711 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-11-09 14:57:20,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 14:57:20,711 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2020-11-09 14:57:20,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 14:57:20,712 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:57:20,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:57:20,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 14:57:20,712 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:57:20,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:57:20,713 INFO L82 PathProgramCache]: Analyzing trace with hash -15968702, now seen corresponding path program 1 times [2020-11-09 14:57:20,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:57:20,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883627959] [2020-11-09 14:57:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:57:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:57:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 14:57:20,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883627959] [2020-11-09 14:57:20,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 14:57:20,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 14:57:20,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1282599176] [2020-11-09 14:57:20,790 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:57:20,791 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:57:20,794 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-11-09 14:57:20,794 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:57:20,817 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:57:20,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 14:57:20,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:57:20,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 14:57:20,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 14:57:20,819 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 4 states. [2020-11-09 14:57:20,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:57:20,826 INFO L93 Difference]: Finished difference Result 17 states and 24 transitions. [2020-11-09 14:57:20,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 14:57:20,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 14:57:20,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:57:20,828 INFO L225 Difference]: With dead ends: 17 [2020-11-09 14:57:20,828 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 14:57:20,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 14:57:20,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 14:57:20,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 14:57:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 14:57:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 14:57:20,829 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-11-09 14:57:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:57:20,829 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 14:57:20,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 14:57:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 14:57:20,830 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 14:57:20,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 14:57:20,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 02:57:20 BasicIcfg [2020-11-09 14:57:20,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 14:57:20,836 INFO L168 Benchmark]: Toolchain (without parser) took 5861.08 ms. Allocated memory was 160.4 MB in the beginning and 201.3 MB in the end (delta: 40.9 MB). Free memory was 135.0 MB in the beginning and 121.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 56.4 MB. Max. memory is 8.0 GB. [2020-11-09 14:57:20,836 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 160.4 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 14:57:20,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.10 ms. Allocated memory is still 160.4 MB. Free memory was 134.2 MB in the beginning and 141.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-11-09 14:57:20,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.41 ms. Allocated memory is still 160.4 MB. Free memory was 141.2 MB in the beginning and 139.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 14:57:20,839 INFO L168 Benchmark]: Boogie Preprocessor took 64.85 ms. Allocated memory is still 160.4 MB. Free memory was 139.1 MB in the beginning and 137.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 14:57:20,840 INFO L168 Benchmark]: RCFGBuilder took 1035.43 ms. Allocated memory is still 160.4 MB. Free memory was 137.5 MB in the beginning and 90.3 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2020-11-09 14:57:20,841 INFO L168 Benchmark]: TraceAbstraction took 3976.48 ms. Allocated memory was 160.4 MB in the beginning and 201.3 MB in the end (delta: 40.9 MB). Free memory was 90.3 MB in the beginning and 121.0 MB in the end (delta: -30.7 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. [2020-11-09 14:57:20,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 160.4 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 664.10 ms. Allocated memory is still 160.4 MB. Free memory was 134.2 MB in the beginning and 141.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 106.41 ms. Allocated memory is still 160.4 MB. Free memory was 141.2 MB in the beginning and 139.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.85 ms. Allocated memory is still 160.4 MB. Free memory was 139.1 MB in the beginning and 137.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1035.43 ms. Allocated memory is still 160.4 MB. Free memory was 137.5 MB in the beginning and 90.3 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3976.48 ms. Allocated memory was 160.4 MB in the beginning and 201.3 MB in the end (delta: 40.9 MB). Free memory was 90.3 MB in the beginning and 121.0 MB in the end (delta: -30.7 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 177 VarBasedMoverChecksPositive, 15 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 23 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 49 PlacesBefore, 18 PlacesAfterwards, 47 TransitionsBefore, 16 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 32 TotalNumberOfCompositions, 979 MoverChecksTotal - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 46 SDtfs, 18 SDslu, 29 SDs, 0 SdLazy, 22 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 804 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...