./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-atomic/peterson.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8ea00c2e3fea3404fda3ea48cf79b928a35b683 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 02:45:17,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 02:45:17,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 02:45:17,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 02:45:17,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 02:45:17,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 02:45:17,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 02:45:17,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 02:45:17,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 02:45:17,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 02:45:17,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 02:45:17,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 02:45:17,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 02:45:17,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 02:45:17,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 02:45:17,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 02:45:17,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 02:45:17,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 02:45:17,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 02:45:17,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 02:45:17,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 02:45:17,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 02:45:17,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 02:45:17,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 02:45:17,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 02:45:17,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 02:45:17,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 02:45:17,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 02:45:17,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 02:45:17,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 02:45:17,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 02:45:17,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 02:45:17,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 02:45:17,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 02:45:17,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 02:45:17,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 02:45:17,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 02:45:17,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 02:45:17,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 02:45:17,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 02:45:17,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 02:45:17,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 02:45:17,856 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 02:45:17,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 02:45:17,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 02:45:17,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 02:45:17,858 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 02:45:17,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 02:45:17,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 02:45:17,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 02:45:17,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 02:45:17,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 02:45:17,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 02:45:17,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 02:45:17,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 02:45:17,860 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 02:45:17,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 02:45:17,860 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 02:45:17,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 02:45:17,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 02:45:17,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 02:45:17,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 02:45:17,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 02:45:17,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 02:45:17,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 02:45:17,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 02:45:17,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 02:45:17,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 02:45:17,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 02:45:17,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 02:45:17,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 02:45:17,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8ea00c2e3fea3404fda3ea48cf79b928a35b683 [2020-10-20 02:45:18,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 02:45:18,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 02:45:18,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 02:45:18,092 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 02:45:18,093 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 02:45:18,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/peterson.i [2020-10-20 02:45:18,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e07524b3/836e23467eb1487294ee2907ded812a7/FLAG6806e7b5c [2020-10-20 02:45:18,687 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 02:45:18,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i [2020-10-20 02:45:18,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e07524b3/836e23467eb1487294ee2907ded812a7/FLAG6806e7b5c [2020-10-20 02:45:18,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e07524b3/836e23467eb1487294ee2907ded812a7 [2020-10-20 02:45:18,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 02:45:18,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 02:45:18,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 02:45:18,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 02:45:18,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 02:45:18,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:45:18" (1/1) ... [2020-10-20 02:45:18,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@511364a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:18, skipping insertion in model container [2020-10-20 02:45:18,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:45:18" (1/1) ... [2020-10-20 02:45:18,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 02:45:19,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 02:45:19,389 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-20 02:45:19,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:45:19,630 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 02:45:19,661 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-20 02:45:19,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:45:19,815 INFO L208 MainTranslator]: Completed translation [2020-10-20 02:45:19,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:19 WrapperNode [2020-10-20 02:45:19,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 02:45:19,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 02:45:19,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 02:45:19,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 02:45:19,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:19" (1/1) ... [2020-10-20 02:45:19,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:19" (1/1) ... [2020-10-20 02:45:19,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 02:45:19,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 02:45:19,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 02:45:19,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 02:45:19,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:19" (1/1) ... [2020-10-20 02:45:19,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:19" (1/1) ... [2020-10-20 02:45:19,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:19" (1/1) ... [2020-10-20 02:45:19,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:19" (1/1) ... [2020-10-20 02:45:19,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:19" (1/1) ... [2020-10-20 02:45:19,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:19" (1/1) ... [2020-10-20 02:45:19,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:19" (1/1) ... [2020-10-20 02:45:19,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 02:45:19,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 02:45:19,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 02:45:19,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 02:45:19,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:19" (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 [2020-10-20 02:45:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 02:45:20,011 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-20 02:45:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-20 02:45:20,011 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-20 02:45:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-20 02:45:20,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 02:45:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 02:45:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 02:45:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 02:45:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 02:45:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 02:45:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 02:45:20,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 02:45:20,014 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 02:45:20,377 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 02:45:20,377 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 02:45:20,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:45:20 BoogieIcfgContainer [2020-10-20 02:45:20,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 02:45:20,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 02:45:20,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 02:45:20,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 02:45:20,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 02:45:18" (1/3) ... [2020-10-20 02:45:20,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd4e230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:45:20, skipping insertion in model container [2020-10-20 02:45:20,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:19" (2/3) ... [2020-10-20 02:45:20,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd4e230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:45:20, skipping insertion in model container [2020-10-20 02:45:20,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:45:20" (3/3) ... [2020-10-20 02:45:20,393 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2020-10-20 02:45:20,406 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 02:45:20,406 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 02:45:20,414 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 02:45:20,415 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 02:45:20,446 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,446 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,447 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,447 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,448 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,448 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,448 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,449 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,449 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,454 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,455 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,455 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,456 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,456 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,457 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,457 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,458 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,458 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,458 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,458 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,459 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,459 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,460 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,462 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,462 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,462 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,463 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,463 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,463 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,463 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,464 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,464 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,469 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,471 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,471 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,471 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,472 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,472 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,472 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,472 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:20,505 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-20 02:45:20,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 02:45:20,534 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 02:45:20,535 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 02:45:20,535 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 02:45:20,535 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 02:45:20,535 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 02:45:20,535 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 02:45:20,535 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 02:45:20,535 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 02:45:20,550 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 02:45:20,553 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 178 flow [2020-10-20 02:45:20,556 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 78 transitions, 178 flow [2020-10-20 02:45:20,558 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 178 flow [2020-10-20 02:45:20,614 INFO L129 PetriNetUnfolder]: 9/78 cut-off events. [2020-10-20 02:45:20,614 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-20 02:45:20,620 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 78 events. 9/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 51. Up to 3 conditions per place. [2020-10-20 02:45:20,623 INFO L117 LiptonReduction]: Number of co-enabled transitions 1320 [2020-10-20 02:45:22,120 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-20 02:45:22,239 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-20 02:45:22,256 INFO L132 LiptonReduction]: Checked pairs total: 4014 [2020-10-20 02:45:22,256 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-20 02:45:22,278 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 35 transitions, 92 flow [2020-10-20 02:45:22,321 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 239 states. [2020-10-20 02:45:22,324 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states. [2020-10-20 02:45:22,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 02:45:22,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:22,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:22,333 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:22,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:22,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1618910569, now seen corresponding path program 1 times [2020-10-20 02:45:22,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:22,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435453454] [2020-10-20 02:45:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:22,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435453454] [2020-10-20 02:45:22,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:22,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:45:22,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740311693] [2020-10-20 02:45:22,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:45:22,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:22,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:45:22,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:22,597 INFO L87 Difference]: Start difference. First operand 239 states. Second operand 3 states. [2020-10-20 02:45:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:22,653 INFO L93 Difference]: Finished difference Result 275 states and 588 transitions. [2020-10-20 02:45:22,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:45:22,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 02:45:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:22,673 INFO L225 Difference]: With dead ends: 275 [2020-10-20 02:45:22,673 INFO L226 Difference]: Without dead ends: 187 [2020-10-20 02:45:22,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:22,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-20 02:45:22,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 173. [2020-10-20 02:45:22,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-20 02:45:22,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 391 transitions. [2020-10-20 02:45:22,733 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 391 transitions. Word has length 8 [2020-10-20 02:45:22,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:22,734 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 391 transitions. [2020-10-20 02:45:22,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:45:22,735 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 391 transitions. [2020-10-20 02:45:22,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 02:45:22,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:22,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:22,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 02:45:22,740 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:22,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:22,740 INFO L82 PathProgramCache]: Analyzing trace with hash -866632567, now seen corresponding path program 1 times [2020-10-20 02:45:22,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:22,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562573834] [2020-10-20 02:45:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:22,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:22,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562573834] [2020-10-20 02:45:22,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:22,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:45:22,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103153533] [2020-10-20 02:45:22,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:45:22,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:22,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:45:22,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:22,866 INFO L87 Difference]: Start difference. First operand 173 states and 391 transitions. Second operand 3 states. [2020-10-20 02:45:22,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:22,888 INFO L93 Difference]: Finished difference Result 166 states and 361 transitions. [2020-10-20 02:45:22,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:45:22,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 02:45:22,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:22,891 INFO L225 Difference]: With dead ends: 166 [2020-10-20 02:45:22,891 INFO L226 Difference]: Without dead ends: 120 [2020-10-20 02:45:22,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:22,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-20 02:45:22,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-10-20 02:45:22,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-20 02:45:22,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 259 transitions. [2020-10-20 02:45:22,906 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 259 transitions. Word has length 10 [2020-10-20 02:45:22,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:22,907 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 259 transitions. [2020-10-20 02:45:22,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:45:22,907 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 259 transitions. [2020-10-20 02:45:22,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 02:45:22,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:22,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:22,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 02:45:22,910 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:22,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:22,910 INFO L82 PathProgramCache]: Analyzing trace with hash 351078122, now seen corresponding path program 1 times [2020-10-20 02:45:22,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:22,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540855268] [2020-10-20 02:45:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:23,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540855268] [2020-10-20 02:45:23,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:23,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 02:45:23,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088239757] [2020-10-20 02:45:23,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 02:45:23,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:23,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 02:45:23,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 02:45:23,046 INFO L87 Difference]: Start difference. First operand 120 states and 259 transitions. Second operand 6 states. [2020-10-20 02:45:23,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:23,150 INFO L93 Difference]: Finished difference Result 162 states and 364 transitions. [2020-10-20 02:45:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 02:45:23,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 02:45:23,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:23,153 INFO L225 Difference]: With dead ends: 162 [2020-10-20 02:45:23,153 INFO L226 Difference]: Without dead ends: 100 [2020-10-20 02:45:23,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 02:45:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-20 02:45:23,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-20 02:45:23,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-20 02:45:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 193 transitions. [2020-10-20 02:45:23,164 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 193 transitions. Word has length 15 [2020-10-20 02:45:23,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:23,164 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 193 transitions. [2020-10-20 02:45:23,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 02:45:23,165 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 193 transitions. [2020-10-20 02:45:23,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 02:45:23,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:23,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:23,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 02:45:23,167 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:23,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:23,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1265425900, now seen corresponding path program 2 times [2020-10-20 02:45:23,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:23,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227302155] [2020-10-20 02:45:23,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:23,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227302155] [2020-10-20 02:45:23,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:23,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 02:45:23,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750695770] [2020-10-20 02:45:23,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 02:45:23,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:23,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 02:45:23,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 02:45:23,235 INFO L87 Difference]: Start difference. First operand 100 states and 193 transitions. Second operand 6 states. [2020-10-20 02:45:23,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:23,282 INFO L93 Difference]: Finished difference Result 58 states and 122 transitions. [2020-10-20 02:45:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 02:45:23,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 02:45:23,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:23,284 INFO L225 Difference]: With dead ends: 58 [2020-10-20 02:45:23,284 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 02:45:23,284 INFO L677 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 [2020-10-20 02:45:23,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 02:45:23,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 02:45:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 02:45:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 02:45:23,286 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-20 02:45:23,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:23,286 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 02:45:23,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 02:45:23,286 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 02:45:23,286 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 02:45:23,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 02:45:23,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 02:45:23 BasicIcfg [2020-10-20 02:45:23,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 02:45:23,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 02:45:23,291 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 02:45:23,291 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 02:45:23,292 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:45:20" (3/4) ... [2020-10-20 02:45:23,296 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 02:45:23,303 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2020-10-20 02:45:23,303 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-10-20 02:45:23,308 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-20 02:45:23,308 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 02:45:23,308 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 02:45:23,308 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 02:45:23,420 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 02:45:23,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 02:45:23,422 INFO L168 Benchmark]: Toolchain (without parser) took 4448.46 ms. Allocated memory was 35.7 MB in the beginning and 71.8 MB in the end (delta: 36.2 MB). Free memory was 15.1 MB in the beginning and 54.5 MB in the end (delta: -39.4 MB). Peak memory consumption was 43.6 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:23,423 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 34.1 MB. Free memory was 10.2 MB in the beginning and 10.1 MB in the end (delta: 45.4 kB). Peak memory consumption was 45.4 kB. Max. memory is 14.3 GB. [2020-10-20 02:45:23,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 836.69 ms. Allocated memory was 35.7 MB in the beginning and 46.7 MB in the end (delta: 11.0 MB). Free memory was 14.2 MB in the beginning and 19.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:23,424 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.40 ms. Allocated memory is still 46.7 MB. Free memory was 19.0 MB in the beginning and 17.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:23,425 INFO L168 Benchmark]: Boogie Preprocessor took 29.31 ms. Allocated memory is still 46.7 MB. Free memory was 17.0 MB in the beginning and 15.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:23,426 INFO L168 Benchmark]: RCFGBuilder took 449.21 ms. Allocated memory was 46.7 MB in the beginning and 48.2 MB in the end (delta: 1.6 MB). Free memory was 15.4 MB in the beginning and 25.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:23,427 INFO L168 Benchmark]: TraceAbstraction took 2907.83 ms. Allocated memory was 48.2 MB in the beginning and 66.6 MB in the end (delta: 18.4 MB). Free memory was 25.0 MB in the beginning and 7.3 MB in the end (delta: 17.7 MB). Peak memory consumption was 36.0 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:23,428 INFO L168 Benchmark]: Witness Printer took 129.40 ms. Allocated memory was 66.6 MB in the beginning and 71.8 MB in the end (delta: 5.2 MB). Free memory was 7.3 MB in the beginning and 54.5 MB in the end (delta: -47.2 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:23,432 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 34.1 MB. Free memory was 10.2 MB in the beginning and 10.1 MB in the end (delta: 45.4 kB). Peak memory consumption was 45.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 836.69 ms. Allocated memory was 35.7 MB in the beginning and 46.7 MB in the end (delta: 11.0 MB). Free memory was 14.2 MB in the beginning and 19.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 84.40 ms. Allocated memory is still 46.7 MB. Free memory was 19.0 MB in the beginning and 17.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 29.31 ms. Allocated memory is still 46.7 MB. Free memory was 17.0 MB in the beginning and 15.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 449.21 ms. Allocated memory was 46.7 MB in the beginning and 48.2 MB in the end (delta: 1.6 MB). Free memory was 15.4 MB in the beginning and 25.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2907.83 ms. Allocated memory was 48.2 MB in the beginning and 66.6 MB in the end (delta: 18.4 MB). Free memory was 25.0 MB in the beginning and 7.3 MB in the end (delta: 17.7 MB). Peak memory consumption was 36.0 MB. Max. memory is 14.3 GB. * Witness Printer took 129.40 ms. Allocated memory was 66.6 MB in the beginning and 71.8 MB in the end (delta: 5.2 MB). Free memory was 7.3 MB in the beginning and 54.5 MB in the end (delta: -47.2 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 970 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 190 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 75 PlacesBefore, 36 PlacesAfterwards, 78 TransitionsBefore, 35 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 63 TotalNumberOfCompositions, 4014 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 147 SDtfs, 111 SDslu, 174 SDs, 0 SdLazy, 87 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1338 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...