/usr/bin/java -Xmx16000000000 -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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-New_States.epf -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 12:31:28,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 12:31:28,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 12:31:28,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 12:31:28,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 12:31:28,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 12:31:28,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 12:31:28,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 12:31:28,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 12:31:28,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 12:31:28,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 12:31:28,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 12:31:28,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 12:31:28,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 12:31:28,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 12:31:28,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 12:31:28,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 12:31:28,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 12:31:28,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 12:31:28,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 12:31:28,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 12:31:28,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 12:31:28,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 12:31:28,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 12:31:28,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 12:31:28,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 12:31:28,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 12:31:28,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 12:31:28,293 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-New_States.epf [2020-11-12 12:31:28,328 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 12:31:28,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 12:31:28,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 12:31:28,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 12:31:28,331 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 12:31:28,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 12:31:28,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 12:31:28,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 12:31:28,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 12:31:28,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 12:31:28,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 12:31:28,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 12:31:28,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 12:31:28,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 12:31:28,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 12:31:28,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 12:31:28,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 12:31:28,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 12:31:28,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 12:31:28,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 12:31:28,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 12:31:28,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:31:28,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 12:31:28,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 12:31:28,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 12:31:28,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 12:31:28,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 12:31:28,336 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 12:31:28,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 12:31:28,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 12:31:28,337 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 12:31:28,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 12:31:28,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 12:31:28,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 12:31:28,800 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 12:31:28,800 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 12:31:28,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-11-12 12:31:28,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4218e6c2/37534cd8e45f41bfae2d0aedafcb20fe/FLAG3006dc451 [2020-11-12 12:31:29,592 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 12:31:29,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-11-12 12:31:29,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4218e6c2/37534cd8e45f41bfae2d0aedafcb20fe/FLAG3006dc451 [2020-11-12 12:31:29,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4218e6c2/37534cd8e45f41bfae2d0aedafcb20fe [2020-11-12 12:31:29,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 12:31:29,915 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 12:31:29,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 12:31:29,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 12:31:29,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 12:31:29,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:31:29" (1/1) ... [2020-11-12 12:31:29,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53164346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:31:29, skipping insertion in model container [2020-11-12 12:31:29,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:31:29" (1/1) ... [2020-11-12 12:31:29,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 12:31:30,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 12:31:30,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:31:30,450 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 12:31:30,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:31:30,653 INFO L208 MainTranslator]: Completed translation [2020-11-12 12:31:30,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:31:30 WrapperNode [2020-11-12 12:31:30,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 12:31:30,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 12:31:30,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 12:31:30,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 12:31:30,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:31:30" (1/1) ... [2020-11-12 12:31:30,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:31:30" (1/1) ... [2020-11-12 12:31:30,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 12:31:30,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 12:31:30,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 12:31:30,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 12:31:30,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:31:30" (1/1) ... [2020-11-12 12:31:30,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:31:30" (1/1) ... [2020-11-12 12:31:30,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:31:30" (1/1) ... [2020-11-12 12:31:30,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:31:30" (1/1) ... [2020-11-12 12:31:30,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:31:30" (1/1) ... [2020-11-12 12:31:30,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:31:30" (1/1) ... [2020-11-12 12:31:30,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:31:30" (1/1) ... [2020-11-12 12:31:30,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 12:31:30,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 12:31:30,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 12:31:30,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 12:31:30,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:31:30" (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 [2020-11-12 12:31:30,899 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-11-12 12:31:30,900 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-11-12 12:31:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 12:31:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 12:31:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 12:31:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 12:31:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 12:31:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 12:31:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 12:31:30,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 12:31:30,903 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 12:31:31,438 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 12:31:31,438 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-11-12 12:31:31,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:31:31 BoogieIcfgContainer [2020-11-12 12:31:31,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 12:31:31,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 12:31:31,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 12:31:31,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 12:31:31,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:31:29" (1/3) ... [2020-11-12 12:31:31,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16775740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:31:31, skipping insertion in model container [2020-11-12 12:31:31,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:31:30" (2/3) ... [2020-11-12 12:31:31,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16775740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:31:31, skipping insertion in model container [2020-11-12 12:31:31,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:31:31" (3/3) ... [2020-11-12 12:31:31,449 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-11-12 12:31:31,465 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 12:31:31,465 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 12:31:31,469 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 12:31:31,470 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 12:31:31,500 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,500 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,500 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,501 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,501 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,501 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,501 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,501 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,502 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,502 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,502 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,502 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,503 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,503 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,503 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,503 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,503 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,504 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,504 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,504 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,504 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,504 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,505 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,505 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,505 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,505 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,505 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,506 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,506 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,506 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,506 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,506 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,507 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,507 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,507 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,507 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,507 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,508 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,508 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,508 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,508 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,508 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,509 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,509 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,509 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,510 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,510 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,510 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,510 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,511 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,511 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,511 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,511 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,511 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,512 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,512 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,512 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,512 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,513 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,513 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,515 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,516 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,516 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,516 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,516 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,517 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,517 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,517 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,517 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,517 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,518 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:31:31,521 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 12:31:31,533 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-12 12:31:31,556 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 12:31:31,557 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 12:31:31,557 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 12:31:31,557 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 12:31:31,557 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 12:31:31,557 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 12:31:31,557 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 12:31:31,558 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 12:31:31,570 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 96 transitions, 197 flow [2020-11-12 12:31:31,626 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1101 states, 1099 states have (on average 2.1119199272065514) internal successors, (2321), 1100 states have internal predecessors, (2321), 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) [2020-11-12 12:31:32,222 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 592ms [2020-11-12 12:31:32,226 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 1101 states, 1099 states have (on average 2.1119199272065514) internal successors, (2321), 1100 states have internal predecessors, (2321), 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) [2020-11-12 12:31:32,254 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 14264 states, 13020 states have (on average 1.15284178187404) internal successors, (15010), 14263 states have internal predecessors, (15010), 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) [2020-11-12 12:31:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 14264 states, 13020 states have (on average 1.15284178187404) internal successors, (15010), 14263 states have internal predecessors, (15010), 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) [2020-11-12 12:31:32,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 12:31:32,296 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:31:32,297 INFO L494 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, 1, 1, 1, 1, 1, 1] [2020-11-12 12:31:32,297 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:31:32,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:31:32,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1342416082, now seen corresponding path program 1 times [2020-11-12 12:31:32,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:31:32,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526121134] [2020-11-12 12:31:32,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:31:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:31:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:31:32,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526121134] [2020-11-12 12:31:32,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:31:32,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 12:31:32,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136659129] [2020-11-12 12:31:32,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 12:31:32,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:31:32,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 12:31:32,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 12:31:32,648 INFO L87 Difference]: Start difference. First operand has 14264 states, 13020 states have (on average 1.15284178187404) internal successors, (15010), 14263 states have internal predecessors, (15010), 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, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2020-11-12 12:31:32,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:31:32,735 INFO L93 Difference]: Finished difference Result 5654 states and 5958 transitions. [2020-11-12 12:31:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 12:31:32,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2020-11-12 12:31:32,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:31:32,751 INFO L225 Difference]: With dead ends: 5654 [2020-11-12 12:31:32,752 INFO L226 Difference]: Without dead ends: 307 [2020-11-12 12:31:32,753 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 12:31:32,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-11-12 12:31:32,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 143. [2020-11-12 12:31:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 139 states have (on average 1.0863309352517985) internal successors, (151), 142 states have internal predecessors, (151), 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) [2020-11-12 12:31:32,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2020-11-12 12:31:32,825 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 41 [2020-11-12 12:31:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:31:32,826 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2020-11-12 12:31:32,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2020-11-12 12:31:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2020-11-12 12:31:32,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-12 12:31:32,832 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:31:32,832 INFO L494 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:31:32,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 12:31:32,833 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:31:32,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:31:32,834 INFO L82 PathProgramCache]: Analyzing trace with hash -349437635, now seen corresponding path program 1 times [2020-11-12 12:31:32,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:31:32,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352981666] [2020-11-12 12:31:32,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:31:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:31:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:31:33,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352981666] [2020-11-12 12:31:33,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:31:33,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-12 12:31:33,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965192834] [2020-11-12 12:31:33,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 12:31:33,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:31:33,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 12:31:33,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-12 12:31:33,034 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2020-11-12 12:31:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:31:33,107 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2020-11-12 12:31:33,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 12:31:33,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 42 [2020-11-12 12:31:33,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:31:33,110 INFO L225 Difference]: With dead ends: 112 [2020-11-12 12:31:33,110 INFO L226 Difference]: Without dead ends: 103 [2020-11-12 12:31:33,111 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:31:33,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-12 12:31:33,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-11-12 12:31:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 98 states have (on average 1.0714285714285714) internal successors, (105), 100 states have internal predecessors, (105), 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) [2020-11-12 12:31:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-11-12 12:31:33,120 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 42 [2020-11-12 12:31:33,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:31:33,120 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-11-12 12:31:33,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2020-11-12 12:31:33,121 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-11-12 12:31:33,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-12 12:31:33,122 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:31:33,123 INFO L494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:31:33,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 12:31:33,123 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:31:33,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:31:33,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1772769385, now seen corresponding path program 1 times [2020-11-12 12:31:33,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:31:33,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420794087] [2020-11-12 12:31:33,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:31:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:31:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:31:33,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420794087] [2020-11-12 12:31:33,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:31:33,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-12 12:31:33,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112824285] [2020-11-12 12:31:33,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 12:31:33,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:31:33,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 12:31:33,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-12 12:31:33,265 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2020-11-12 12:31:33,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:31:33,388 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2020-11-12 12:31:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 12:31:33,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2020-11-12 12:31:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:31:33,391 INFO L225 Difference]: With dead ends: 105 [2020-11-12 12:31:33,391 INFO L226 Difference]: Without dead ends: 101 [2020-11-12 12:31:33,392 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:31:33,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-12 12:31:33,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-11-12 12:31:33,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 98 states have (on average 1.0612244897959184) internal successors, (104), 100 states have internal predecessors, (104), 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) [2020-11-12 12:31:33,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2020-11-12 12:31:33,402 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 59 [2020-11-12 12:31:33,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:31:33,404 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2020-11-12 12:31:33,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2020-11-12 12:31:33,404 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2020-11-12 12:31:33,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-12 12:31:33,407 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:31:33,408 INFO L494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:31:33,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 12:31:33,408 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:31:33,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:31:33,409 INFO L82 PathProgramCache]: Analyzing trace with hash 576617955, now seen corresponding path program 1 times [2020-11-12 12:31:33,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:31:33,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195508663] [2020-11-12 12:31:33,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:31:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:31:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:31:33,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195508663] [2020-11-12 12:31:33,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:31:33,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-12 12:31:33,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66572044] [2020-11-12 12:31:33,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 12:31:33,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:31:33,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 12:31:33,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-12 12:31:33,539 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2020-11-12 12:31:33,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:31:33,673 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2020-11-12 12:31:33,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 12:31:33,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2020-11-12 12:31:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:31:33,674 INFO L225 Difference]: With dead ends: 106 [2020-11-12 12:31:33,674 INFO L226 Difference]: Without dead ends: 100 [2020-11-12 12:31:33,675 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:31:33,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-11-12 12:31:33,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-11-12 12:31:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 99 states have internal predecessors, (102), 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) [2020-11-12 12:31:33,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2020-11-12 12:31:33,691 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 60 [2020-11-12 12:31:33,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:31:33,692 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2020-11-12 12:31:33,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2020-11-12 12:31:33,692 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2020-11-12 12:31:33,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 12:31:33,693 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:31:33,693 INFO L494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:31:33,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 12:31:33,697 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:31:33,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:31:33,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1041614598, now seen corresponding path program 1 times [2020-11-12 12:31:33,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:31:33,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358002902] [2020-11-12 12:31:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:31:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:31:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:31:33,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358002902] [2020-11-12 12:31:33,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:31:33,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 12:31:33,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626728707] [2020-11-12 12:31:33,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 12:31:33,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:31:33,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 12:31:33,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:31:33,847 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2020-11-12 12:31:34,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:31:34,030 INFO L93 Difference]: Finished difference Result 106 states and 107 transitions. [2020-11-12 12:31:34,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:31:34,031 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 61 [2020-11-12 12:31:34,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:31:34,032 INFO L225 Difference]: With dead ends: 106 [2020-11-12 12:31:34,032 INFO L226 Difference]: Without dead ends: 81 [2020-11-12 12:31:34,033 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-11-12 12:31:34,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-12 12:31:34,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-11-12 12:31:34,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 79 states have internal predecessors, (80), 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) [2020-11-12 12:31:34,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2020-11-12 12:31:34,037 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 61 [2020-11-12 12:31:34,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:31:34,038 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2020-11-12 12:31:34,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2020-11-12 12:31:34,038 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2020-11-12 12:31:34,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 12:31:34,039 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:31:34,039 INFO L494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:31:34,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 12:31:34,039 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:31:34,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:31:34,040 INFO L82 PathProgramCache]: Analyzing trace with hash 949220092, now seen corresponding path program 2 times [2020-11-12 12:31:34,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:31:34,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742897176] [2020-11-12 12:31:34,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:31:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 12:31:34,057 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 12:31:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 12:31:34,084 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 12:31:34,135 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-12 12:31:34,136 INFO L595 BasicCegarLoop]: Counterexample might be feasible [2020-11-12 12:31:34,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 12:31:34,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:31:34 BasicIcfg [2020-11-12 12:31:34,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 12:31:34,250 INFO L168 Benchmark]: Toolchain (without parser) took 4340.11 ms. Allocated memory is still 302.0 MB. Free memory was 275.4 MB in the beginning and 197.1 MB in the end (delta: 78.4 MB). Peak memory consumption was 80.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:31:34,251 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 302.0 MB. Free memory was 273.1 MB in the beginning and 273.0 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:31:34,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.48 ms. Allocated memory is still 302.0 MB. Free memory was 274.8 MB in the beginning and 278.8 MB in the end (delta: -4.0 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.0 GB. [2020-11-12 12:31:34,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.65 ms. Allocated memory is still 302.0 MB. Free memory was 278.8 MB in the beginning and 276.7 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:31:34,256 INFO L168 Benchmark]: Boogie Preprocessor took 53.70 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 274.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:31:34,257 INFO L168 Benchmark]: RCFGBuilder took 627.79 ms. Allocated memory is still 302.0 MB. Free memory was 274.6 MB in the beginning and 248.3 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2020-11-12 12:31:34,258 INFO L168 Benchmark]: TraceAbstraction took 2805.91 ms. Allocated memory is still 302.0 MB. Free memory was 248.3 MB in the beginning and 197.1 MB in the end (delta: 51.3 MB). Peak memory consumption was 50.2 MB. Max. memory is 16.0 GB. [2020-11-12 12:31:34,267 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 302.0 MB. Free memory was 273.1 MB in the beginning and 273.0 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 736.48 ms. Allocated memory is still 302.0 MB. Free memory was 274.8 MB in the beginning and 278.8 MB in the end (delta: -4.0 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 100.65 ms. Allocated memory is still 302.0 MB. Free memory was 278.8 MB in the beginning and 276.7 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 53.70 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 274.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 627.79 ms. Allocated memory is still 302.0 MB. Free memory was 274.6 MB in the beginning and 248.3 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2805.91 ms. Allocated memory is still 302.0 MB. Free memory was 248.3 MB in the beginning and 197.1 MB in the end (delta: 51.3 MB). Peak memory consumption was 50.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 683]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; VAL [stoppingFlag=0] [L698] 0 volatile int pendingIo; VAL [pendingIo=0, stoppingFlag=0] [L699] 0 volatile int stoppingEvent; VAL [pendingIo=0, stoppingEvent=0, stoppingFlag=0] [L700] 0 volatile int stopped; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L740] 0 pthread_t t; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L741] 0 pendingIo = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L742] 0 stoppingFlag = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L743] 0 stoppingEvent = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L744] 0 stopped = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L724] 0 int status; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L702] COND FALSE 0 !(\read(stoppingFlag)) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L733] 1 stoppingFlag = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L717] 1 int pending; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L711] 1 pendingIo-- [L712] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L705] 0 pendingIo = pendingIo + 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L707] 0 return 0; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L725] 0 status = BCSP_IoIncrement() VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L726] COND TRUE 0 status == 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L714] 1 return tmp; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L718] 1 pending = dec() VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L719] COND TRUE 1 pending == 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L720] 1 stoppingEvent = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=1, stoppingFlag=1] [L686] COND FALSE 1 !(!cond) VAL [pendingIo=1, stopped=0, stoppingEvent=1, stoppingFlag=1] [L736] 1 stopped = 1 VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L689] COND TRUE 0 !(cond) VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L683] COND FALSE 0 !(0) VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L683] 0 __assert_fail ("0", "assert.h", 6, __extension__ __PRETTY_FUNCTION__) VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 367 SDtfs, 133 SDslu, 876 SDs, 0 SdLazy, 105 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14264occurred 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, 5 MinimizatonAttempts, 167 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 324 NumberOfCodeBlocks, 324 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 258 ConstructedInterpolants, 0 QuantifiedInterpolants, 25975 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 incorrect! Received shutdown request...