/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/join_correct.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 03:07:50,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 03:07:50,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 03:07:50,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 03:07:50,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 03:07:50,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 03:07:50,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 03:07:50,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 03:07:50,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 03:07:50,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 03:07:50,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 03:07:50,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 03:07:50,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 03:07:50,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 03:07:50,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 03:07:50,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 03:07:50,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 03:07:50,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 03:07:50,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 03:07:50,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 03:07:50,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 03:07:50,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 03:07:50,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 03:07:50,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 03:07:50,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 03:07:50,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 03:07:50,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 03:07:50,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 03:07:50,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 03:07:50,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 03:07:50,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 03:07:50,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 03:07:50,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 03:07:50,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 03:07:50,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 03:07:50,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 03:07:50,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 03:07:50,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 03:07:50,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 03:07:50,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 03:07:50,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 03:07:50,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 03:07:50,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 03:07:50,759 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 03:07:50,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 03:07:50,759 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 03:07:50,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 03:07:50,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 03:07:50,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 03:07:50,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 03:07:50,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 03:07:50,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 03:07:50,761 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 03:07:50,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 03:07:50,761 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 03:07:50,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 03:07:50,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 03:07:50,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 03:07:50,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 03:07:50,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 03:07:50,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 03:07:50,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 03:07:50,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 03:07:50,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 03:07:50,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 03:07:50,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 03:07:50,763 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 03:07:50,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 03:07:50,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 03:07:51,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 03:07:51,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 03:07:51,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 03:07:51,070 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 03:07:51,072 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 03:07:51,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/join_correct.c [2021-06-05 03:07:51,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81ea6a1c8/5b02f8be429e4fdd824e9965b3e9f138/FLAGb929df11f [2021-06-05 03:07:51,693 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 03:07:51,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/join_correct.c [2021-06-05 03:07:51,693 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 03:07:51,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81ea6a1c8/5b02f8be429e4fdd824e9965b3e9f138/FLAGb929df11f [2021-06-05 03:07:52,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81ea6a1c8/5b02f8be429e4fdd824e9965b3e9f138 [2021-06-05 03:07:52,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 03:07:52,163 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 03:07:52,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 03:07:52,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 03:07:52,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 03:07:52,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 03:07:52" (1/1) ... [2021-06-05 03:07:52,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b020f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:52, skipping insertion in model container [2021-06-05 03:07:52,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 03:07:52" (1/1) ... [2021-06-05 03:07:52,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 03:07:52,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 03:07:52,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 03:07:52,350 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 03:07:52,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 03:07:52,413 INFO L208 MainTranslator]: Completed translation [2021-06-05 03:07:52,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:52 WrapperNode [2021-06-05 03:07:52,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 03:07:52,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 03:07:52,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 03:07:52,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 03:07:52,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:52" (1/1) ... [2021-06-05 03:07:52,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:52" (1/1) ... [2021-06-05 03:07:52,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 03:07:52,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 03:07:52,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 03:07:52,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 03:07:52,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:52" (1/1) ... [2021-06-05 03:07:52,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:52" (1/1) ... [2021-06-05 03:07:52,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:52" (1/1) ... [2021-06-05 03:07:52,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:52" (1/1) ... [2021-06-05 03:07:52,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:52" (1/1) ... [2021-06-05 03:07:52,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:52" (1/1) ... [2021-06-05 03:07:52,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:52" (1/1) ... [2021-06-05 03:07:52,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 03:07:52,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 03:07:52,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 03:07:52,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 03:07:52,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 03:07:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-06-05 03:07:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 03:07:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-06-05 03:07:52,540 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2021-06-05 03:07:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 03:07:52,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 03:07:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 03:07:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-06-05 03:07:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 03:07:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 03:07:52,543 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 03:07:52,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 03:07:52,821 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-06-05 03:07:52,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:07:52 BoogieIcfgContainer [2021-06-05 03:07:52,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 03:07:52,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 03:07:52,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 03:07:52,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 03:07:52,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 03:07:52" (1/3) ... [2021-06-05 03:07:52,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a02512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 03:07:52, skipping insertion in model container [2021-06-05 03:07:52,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:52" (2/3) ... [2021-06-05 03:07:52,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a02512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 03:07:52, skipping insertion in model container [2021-06-05 03:07:52,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:07:52" (3/3) ... [2021-06-05 03:07:52,834 INFO L111 eAbstractionObserver]: Analyzing ICFG join_correct.c [2021-06-05 03:07:52,852 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 03:07:52,853 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 03:07:52,853 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 03:07:52,854 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 03:07:52,878 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,878 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,879 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,879 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,879 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,880 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,880 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,880 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,880 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,880 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,881 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,881 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,881 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,881 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,882 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,882 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,884 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,884 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,884 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,885 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:52,909 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-05 03:07:52,930 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 03:07:52,963 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 03:07:52,964 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 03:07:52,964 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 03:07:52,964 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 03:07:52,964 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 03:07:52,964 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 03:07:52,964 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 03:07:52,965 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 03:07:52,974 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 38 transitions, 84 flow [2021-06-05 03:07:52,993 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:52,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:07:53,009 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:07:53,010 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:07:53,011 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:07:53,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:07:53,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1623463023, now seen corresponding path program 1 times [2021-06-05 03:07:53,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:07:53,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258917726] [2021-06-05 03:07:53,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:07:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 03:07:53,125 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 03:07:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 03:07:53,151 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 03:07:53,170 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 03:07:53,171 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 03:07:53,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 03:07:53,172 WARN L242 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 03:07:53,172 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-06-05 03:07:53,179 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,180 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,180 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,180 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,180 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,180 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,180 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,180 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,181 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,181 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,181 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,181 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,181 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,181 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,182 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,182 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,182 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,182 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,182 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,182 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,183 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,183 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,183 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,183 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,183 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,183 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,183 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,184 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,184 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,184 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,184 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,184 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,185 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,185 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,185 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,185 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,187 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,188 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,188 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,188 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:53,194 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-05 03:07:53,194 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 03:07:53,196 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 03:07:53,196 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 03:07:53,197 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 03:07:53,197 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 03:07:53,197 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 03:07:53,197 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 03:07:53,197 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 03:07:53,197 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 03:07:53,199 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 43 transitions, 104 flow [2021-06-05 03:07:53,226 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 416 states, 408 states have (on average 2.156862745098039) internal successors, (880), 415 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:53,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 416 states, 408 states have (on average 2.156862745098039) internal successors, (880), 415 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:53,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 03:07:53,243 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:07:53,248 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:07:53,249 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:07:53,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:07:53,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1533845642, now seen corresponding path program 1 times [2021-06-05 03:07:53,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:07:53,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711948074] [2021-06-05 03:07:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:07:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:07:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:07:53,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:07:53,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711948074] [2021-06-05 03:07:53,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711948074] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:07:53,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:07:53,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 03:07:53,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618444431] [2021-06-05 03:07:53,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 03:07:53,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:07:53,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 03:07:53,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 03:07:53,318 INFO L87 Difference]: Start difference. First operand has 416 states, 408 states have (on average 2.156862745098039) internal successors, (880), 415 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:53,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:07:53,340 INFO L93 Difference]: Finished difference Result 416 states and 859 transitions. [2021-06-05 03:07:53,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 03:07:53,341 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2021-06-05 03:07:53,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:07:53,352 INFO L225 Difference]: With dead ends: 416 [2021-06-05 03:07:53,352 INFO L226 Difference]: Without dead ends: 341 [2021-06-05 03:07:53,354 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 03:07:53,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-06-05 03:07:53,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-06-05 03:07:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 337 states have (on average 2.1839762611275964) internal successors, (736), 340 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:53,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 736 transitions. [2021-06-05 03:07:53,412 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 736 transitions. Word has length 28 [2021-06-05 03:07:53,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:07:53,412 INFO L482 AbstractCegarLoop]: Abstraction has 341 states and 736 transitions. [2021-06-05 03:07:53,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:53,412 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 736 transitions. [2021-06-05 03:07:53,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 03:07:53,414 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:07:53,414 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:07:53,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 03:07:53,414 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:07:53,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:07:53,415 INFO L82 PathProgramCache]: Analyzing trace with hash -273608821, now seen corresponding path program 1 times [2021-06-05 03:07:53,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:07:53,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896306951] [2021-06-05 03:07:53,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:07:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:07:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:07:53,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:07:53,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896306951] [2021-06-05 03:07:53,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896306951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:07:53,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882391978] [2021-06-05 03:07:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:07:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:07:53,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 03:07:53,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:07:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:07:53,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882391978] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:07:53,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:07:53,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 03:07:53,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396781410] [2021-06-05 03:07:53,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:07:53,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:07:53,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:07:53,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:07:53,735 INFO L87 Difference]: Start difference. First operand 341 states and 736 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2021-06-05 03:07:53,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:07:53,810 INFO L93 Difference]: Finished difference Result 323 states and 709 transitions. [2021-06-05 03:07:53,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 03:07:53,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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 28 [2021-06-05 03:07:53,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:07:53,812 INFO L225 Difference]: With dead ends: 323 [2021-06-05 03:07:53,813 INFO L226 Difference]: Without dead ends: 323 [2021-06-05 03:07:53,813 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:07:53,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-06-05 03:07:53,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-06-05 03:07:53,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 320 states have (on average 2.215625) internal successors, (709), 322 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 709 transitions. [2021-06-05 03:07:53,829 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 709 transitions. Word has length 28 [2021-06-05 03:07:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:07:53,829 INFO L482 AbstractCegarLoop]: Abstraction has 323 states and 709 transitions. [2021-06-05 03:07:53,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2021-06-05 03:07:53,829 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 709 transitions. [2021-06-05 03:07:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-06-05 03:07:53,831 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:07:53,831 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:07:54,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-05 03:07:54,048 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:07:54,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:07:54,049 INFO L82 PathProgramCache]: Analyzing trace with hash -451166546, now seen corresponding path program 1 times [2021-06-05 03:07:54,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:07:54,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617163509] [2021-06-05 03:07:54,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:07:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:07:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:07:54,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:07:54,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617163509] [2021-06-05 03:07:54,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617163509] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:07:54,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249594317] [2021-06-05 03:07:54,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:07:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:07:54,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 03:07:54,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:07:54,286 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:07:54,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249594317] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:07:54,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 03:07:54,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-06-05 03:07:54,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126053773] [2021-06-05 03:07:54,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:07:54,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:07:54,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:07:54,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:07:54,288 INFO L87 Difference]: Start difference. First operand 323 states and 709 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:54,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:07:54,395 INFO L93 Difference]: Finished difference Result 243 states and 509 transitions. [2021-06-05 03:07:54,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:07:54,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 31 [2021-06-05 03:07:54,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:07:54,397 INFO L225 Difference]: With dead ends: 243 [2021-06-05 03:07:54,397 INFO L226 Difference]: Without dead ends: 243 [2021-06-05 03:07:54,397 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 03:07:54,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-06-05 03:07:54,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-06-05 03:07:54,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 241 states have (on average 2.112033195020747) internal successors, (509), 242 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 509 transitions. [2021-06-05 03:07:54,408 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 509 transitions. Word has length 31 [2021-06-05 03:07:54,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:07:54,408 INFO L482 AbstractCegarLoop]: Abstraction has 243 states and 509 transitions. [2021-06-05 03:07:54,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:54,415 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 509 transitions. [2021-06-05 03:07:54,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-06-05 03:07:54,417 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:07:54,417 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:07:54,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:07:54,641 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:07:54,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:07:54,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1144972007, now seen corresponding path program 1 times [2021-06-05 03:07:54,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:07:54,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752389557] [2021-06-05 03:07:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:07:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:07:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-05 03:07:54,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:07:54,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752389557] [2021-06-05 03:07:54,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752389557] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:07:54,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273694359] [2021-06-05 03:07:54,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:07:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:07:54,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 03:07:54,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:07:55,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 03:07:55,065 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 03:07:55,070 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 03:07:55,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 03:07:55,074 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 03:07:55,079 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 03:07:55,080 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-05 03:07:55,081 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2021-06-05 03:07:55,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-06-05 03:07:55,145 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 03:07:55,151 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 03:07:55,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-06-05 03:07:55,154 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 03:07:55,158 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 03:07:55,159 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-05 03:07:55,159 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2021-06-05 03:07:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-05 03:07:55,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273694359] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:07:55,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:07:55,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-06-05 03:07:55,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230959312] [2021-06-05 03:07:55,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:07:55,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:07:55,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:07:55,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:07:55,164 INFO L87 Difference]: Start difference. First operand 243 states and 509 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:55,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:07:55,436 INFO L93 Difference]: Finished difference Result 239 states and 502 transitions. [2021-06-05 03:07:55,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 03:07:55,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-06-05 03:07:55,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:07:55,439 INFO L225 Difference]: With dead ends: 239 [2021-06-05 03:07:55,439 INFO L226 Difference]: Without dead ends: 219 [2021-06-05 03:07:55,439 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 256.2ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-06-05 03:07:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-06-05 03:07:55,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-06-05 03:07:55,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.1422018348623855) internal successors, (467), 218 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:55,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 467 transitions. [2021-06-05 03:07:55,467 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 467 transitions. Word has length 38 [2021-06-05 03:07:55,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:07:55,468 INFO L482 AbstractCegarLoop]: Abstraction has 219 states and 467 transitions. [2021-06-05 03:07:55,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:55,468 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 467 transitions. [2021-06-05 03:07:55,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-06-05 03:07:55,469 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:07:55,469 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:07:55,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:07:55,670 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:07:55,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:07:55,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1397908089, now seen corresponding path program 1 times [2021-06-05 03:07:55,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:07:55,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213347667] [2021-06-05 03:07:55,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:07:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:07:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:07:56,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:07:56,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213347667] [2021-06-05 03:07:56,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213347667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:07:56,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503188692] [2021-06-05 03:07:56,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:07:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:07:56,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 03:07:56,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:07:56,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 03:07:56,220 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 03:07:56,228 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 03:07:56,231 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-05 03:07:56,231 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:33 [2021-06-05 03:07:56,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 03:07:56,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 29 [2021-06-05 03:07:56,347 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 03:07:56,356 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 03:07:56,358 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-05 03:07:56,359 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:36 [2021-06-05 03:07:56,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 03:07:56,614 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 03:07:56,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 17 [2021-06-05 03:07:56,616 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 03:07:56,621 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 03:07:56,624 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-05 03:07:56,624 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:50, output treesize:11 [2021-06-05 03:07:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:07:56,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503188692] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:07:56,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:07:56,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2021-06-05 03:07:56,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841076934] [2021-06-05 03:07:56,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 03:07:56,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:07:56,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 03:07:56,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-06-05 03:07:56,673 INFO L87 Difference]: Start difference. First operand 219 states and 467 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:56,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:07:56,933 INFO L93 Difference]: Finished difference Result 195 states and 425 transitions. [2021-06-05 03:07:56,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 03:07:56,933 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 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 38 [2021-06-05 03:07:56,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:07:56,934 INFO L225 Difference]: With dead ends: 195 [2021-06-05 03:07:56,934 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 03:07:56,934 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 551.4ms TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2021-06-05 03:07:56,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 03:07:56,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 03:07:56,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 03:07:56,935 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2021-06-05 03:07:56,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:07:56,935 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 03:07:56,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:07:56,935 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 03:07:56,935 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 03:07:57,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:07:57,150 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2021-06-05 03:07:57,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 03:07:57 BasicIcfg [2021-06-05 03:07:57,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 03:07:57,152 INFO L168 Benchmark]: Toolchain (without parser) took 4989.09 ms. Allocated memory is still 339.7 MB. Free memory was 301.7 MB in the beginning and 258.4 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.0 GB. [2021-06-05 03:07:57,152 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 339.7 MB. Free memory was 320.3 MB in the beginning and 320.2 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 03:07:57,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.97 ms. Allocated memory is still 339.7 MB. Free memory was 301.5 MB in the beginning and 323.7 MB in the end (delta: -22.2 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. [2021-06-05 03:07:57,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.00 ms. Allocated memory is still 339.7 MB. Free memory was 322.6 MB in the beginning and 321.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 03:07:57,152 INFO L168 Benchmark]: Boogie Preprocessor took 26.30 ms. Allocated memory is still 339.7 MB. Free memory was 321.6 MB in the beginning and 320.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 03:07:57,152 INFO L168 Benchmark]: RCFGBuilder took 356.86 ms. Allocated memory is still 339.7 MB. Free memory was 320.5 MB in the beginning and 303.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-06-05 03:07:57,153 INFO L168 Benchmark]: TraceAbstraction took 4322.65 ms. Allocated memory is still 339.7 MB. Free memory was 303.7 MB in the beginning and 258.4 MB in the end (delta: 45.3 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.0 GB. [2021-06-05 03:07:57,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 339.7 MB. Free memory was 320.3 MB in the beginning and 320.2 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 248.97 ms. Allocated memory is still 339.7 MB. Free memory was 301.5 MB in the beginning and 323.7 MB in the end (delta: -22.2 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 29.00 ms. Allocated memory is still 339.7 MB. Free memory was 322.6 MB in the beginning and 321.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.30 ms. Allocated memory is still 339.7 MB. Free memory was 321.6 MB in the beginning and 320.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 356.86 ms. Allocated memory is still 339.7 MB. Free memory was 320.5 MB in the beginning and 303.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4322.65 ms. Allocated memory is still 339.7 MB. Free memory was 303.7 MB in the beginning and 258.4 MB in the end (delta: 45.3 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 210.6ms, OverallIterations: 1, TraceHistogramMax: 2, EmptinessCheckTime: 16.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 28.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.7ms SsaConstructionTime, 28.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3952.5ms, OverallIterations: 5, TraceHistogramMax: 3, EmptinessCheckTime: 22.6ms, AutomataDifference: 777.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 29.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 237 SDtfs, 324 SDslu, 751 SDs, 0 SdLazy, 302 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 217.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 961.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=416occurred in iteration=0, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 100.2ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 48.5ms SsaConstructionTime, 164.7ms SatisfiabilityAnalysisTime, 1736.4ms InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 289 ConstructedInterpolants, 12 QuantifiedInterpolants, 2523 SizeOfPredicates, 30 NumberOfNonLiveVariables, 340 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 43/91 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...