./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/17_szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/17_szymanski.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/bin/uautomizer --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 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:30,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:30,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:30,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:30,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:30,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:30,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:30,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:30,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:30,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:30,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:30,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:30,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:30,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:30,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:30,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:30,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:30,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:30,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:30,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:30,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:30,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:30,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:30,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:30,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:30,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:30,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:30,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:30,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:30,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:30,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:30,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:30,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:30,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:30,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:30,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:30,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:30,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:30,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:30,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:30,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:30,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:57:30,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:30,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:30,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:30,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:30,821 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:30,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:30,822 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:30,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:30,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:30,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:30,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:30,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:30,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:30,824 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:30,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:30,824 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:30,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:30,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:30,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:30,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:30,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:30,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:30,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:30,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:30,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:30,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:30,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:30,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:30,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:30,828 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:/tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 [2020-11-28 02:57:31,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:31,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:31,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:31,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:31,172 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:31,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/bin/uautomizer/../../sv-benchmarks/c/pthread-ext/17_szymanski.i [2020-11-28 02:57:31,270 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/bin/uautomizer/data/7b76b6434/35b8aa9a0ac140408ef3cf7c603c7edd/FLAG4c0dc0294 [2020-11-28 02:57:32,133 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:32,135 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/sv-benchmarks/c/pthread-ext/17_szymanski.i [2020-11-28 02:57:32,167 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/bin/uautomizer/data/7b76b6434/35b8aa9a0ac140408ef3cf7c603c7edd/FLAG4c0dc0294 [2020-11-28 02:57:32,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/bin/uautomizer/data/7b76b6434/35b8aa9a0ac140408ef3cf7c603c7edd [2020-11-28 02:57:32,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:32,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:32,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:32,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:32,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:32,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:32,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ecb2574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32, skipping insertion in model container [2020-11-28 02:57:32,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:32,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:32,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:32,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:32,726 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:32,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:32,912 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:32,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32 WrapperNode [2020-11-28 02:57:32,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:32,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:32,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:32,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:32,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:32,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:33,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:33,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:33,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:33,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:33,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:33,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:33,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:33,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:33,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:33,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:33,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:33,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:33,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:33,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:33,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:33,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:33,145 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-28 02:57:33,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-28 02:57:33,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:57:33,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:33,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:57:33,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:33,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:33,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:33,149 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 02:57:33,813 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:33,813 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 02:57:33,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:33 BoogieIcfgContainer [2020-11-28 02:57:33,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:33,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:33,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:33,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:33,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:32" (1/3) ... [2020-11-28 02:57:33,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750b8a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:33, skipping insertion in model container [2020-11-28 02:57:33,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (2/3) ... [2020-11-28 02:57:33,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750b8a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:33, skipping insertion in model container [2020-11-28 02:57:33,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:33" (3/3) ... [2020-11-28 02:57:33,830 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-11-28 02:57:33,856 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 02:57:33,856 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:33,862 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 02:57:33,863 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 02:57:33,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,905 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,906 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,906 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,906 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,908 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,909 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,910 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,911 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,914 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,915 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,916 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,916 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,916 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,917 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:33,925 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 02:57:33,939 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 02:57:33,980 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:33,981 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:57:33,981 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:33,981 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:33,981 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:33,981 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:33,982 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:33,982 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:34,001 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 02:57:34,012 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 96 transitions, 197 flow [2020-11-28 02:57:34,016 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 96 transitions, 197 flow [2020-11-28 02:57:34,018 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 96 transitions, 197 flow [2020-11-28 02:57:34,103 INFO L129 PetriNetUnfolder]: 26/95 cut-off events. [2020-11-28 02:57:34,104 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 02:57:34,112 INFO L80 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 26/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 80. Up to 3 conditions per place. [2020-11-28 02:57:34,121 INFO L116 LiptonReduction]: Number of co-enabled transitions 3150 [2020-11-28 02:57:35,482 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-11-28 02:57:35,942 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-11-28 02:57:36,048 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-11-28 02:57:36,086 INFO L131 LiptonReduction]: Checked pairs total: 5734 [2020-11-28 02:57:36,086 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-11-28 02:57:36,092 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2020-11-28 02:57:36,113 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2020-11-28 02:57:36,115 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-11-28 02:57:36,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:57:36,124 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:36,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:36,125 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:36,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:36,131 INFO L82 PathProgramCache]: Analyzing trace with hash 556857473, now seen corresponding path program 1 times [2020-11-28 02:57:36,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:36,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532623050] [2020-11-28 02:57:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:36,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532623050] [2020-11-28 02:57:36,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:36,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:36,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674628246] [2020-11-28 02:57:36,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:57:36,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:36,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:57:36,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:57:36,334 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2020-11-28 02:57:36,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:36,363 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2020-11-28 02:57:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:57:36,365 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-28 02:57:36,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:36,381 INFO L225 Difference]: With dead ends: 198 [2020-11-28 02:57:36,381 INFO L226 Difference]: Without dead ends: 198 [2020-11-28 02:57:36,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:57:36,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-28 02:57:36,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-11-28 02:57:36,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-11-28 02:57:36,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2020-11-28 02:57:36,450 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2020-11-28 02:57:36,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:36,451 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2020-11-28 02:57:36,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:57:36,451 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2020-11-28 02:57:36,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:57:36,453 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:36,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:36,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:57:36,454 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:36,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:36,455 INFO L82 PathProgramCache]: Analyzing trace with hash -265870444, now seen corresponding path program 1 times [2020-11-28 02:57:36,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:36,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280261225] [2020-11-28 02:57:36,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:36,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280261225] [2020-11-28 02:57:36,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:36,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:36,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251135490] [2020-11-28 02:57:36,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:36,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:36,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:36,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:36,541 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2020-11-28 02:57:36,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:36,612 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2020-11-28 02:57:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:36,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-28 02:57:36,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:36,623 INFO L225 Difference]: With dead ends: 362 [2020-11-28 02:57:36,624 INFO L226 Difference]: Without dead ends: 362 [2020-11-28 02:57:36,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:36,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-11-28 02:57:36,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2020-11-28 02:57:36,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-11-28 02:57:36,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2020-11-28 02:57:36,683 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2020-11-28 02:57:36,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:36,683 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2020-11-28 02:57:36,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:36,684 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2020-11-28 02:57:36,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:57:36,685 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:36,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:36,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:57:36,685 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:36,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:36,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1897023782, now seen corresponding path program 1 times [2020-11-28 02:57:36,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:36,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824550310] [2020-11-28 02:57:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:36,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:36,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824550310] [2020-11-28 02:57:36,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:36,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:36,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563511097] [2020-11-28 02:57:36,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:36,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:36,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:36,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:36,809 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2020-11-28 02:57:36,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:36,845 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2020-11-28 02:57:36,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:36,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-28 02:57:36,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:36,850 INFO L225 Difference]: With dead ends: 348 [2020-11-28 02:57:36,850 INFO L226 Difference]: Without dead ends: 348 [2020-11-28 02:57:36,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:36,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-11-28 02:57:36,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2020-11-28 02:57:36,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-28 02:57:36,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2020-11-28 02:57:36,901 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2020-11-28 02:57:36,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:36,901 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2020-11-28 02:57:36,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:36,902 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2020-11-28 02:57:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:57:36,907 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:36,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:36,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:57:36,908 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:36,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:36,909 INFO L82 PathProgramCache]: Analyzing trace with hash -293575379, now seen corresponding path program 1 times [2020-11-28 02:57:36,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:36,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438602553] [2020-11-28 02:57:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:36,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438602553] [2020-11-28 02:57:36,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:36,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:36,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268462110] [2020-11-28 02:57:36,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:36,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:36,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:36,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:36,959 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 3 states. [2020-11-28 02:57:37,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,059 INFO L93 Difference]: Finished difference Result 234 states and 577 transitions. [2020-11-28 02:57:37,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:37,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-28 02:57:37,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,065 INFO L225 Difference]: With dead ends: 234 [2020-11-28 02:57:37,065 INFO L226 Difference]: Without dead ends: 234 [2020-11-28 02:57:37,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:37,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-28 02:57:37,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 230. [2020-11-28 02:57:37,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-28 02:57:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 569 transitions. [2020-11-28 02:57:37,097 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 569 transitions. Word has length 19 [2020-11-28 02:57:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,099 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 569 transitions. [2020-11-28 02:57:37,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:37,099 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 569 transitions. [2020-11-28 02:57:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:57:37,102 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:37,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:37,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:57:37,102 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:37,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:37,103 INFO L82 PathProgramCache]: Analyzing trace with hash -369860675, now seen corresponding path program 2 times [2020-11-28 02:57:37,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:37,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894249427] [2020-11-28 02:57:37,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:37,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894249427] [2020-11-28 02:57:37,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:37,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:37,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426052892] [2020-11-28 02:57:37,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:37,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:37,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:37,182 INFO L87 Difference]: Start difference. First operand 230 states and 569 transitions. Second operand 3 states. [2020-11-28 02:57:37,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,261 INFO L93 Difference]: Finished difference Result 228 states and 553 transitions. [2020-11-28 02:57:37,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:37,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-28 02:57:37,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,264 INFO L225 Difference]: With dead ends: 228 [2020-11-28 02:57:37,264 INFO L226 Difference]: Without dead ends: 228 [2020-11-28 02:57:37,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:37,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-11-28 02:57:37,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-11-28 02:57:37,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-11-28 02:57:37,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 553 transitions. [2020-11-28 02:57:37,279 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 553 transitions. Word has length 19 [2020-11-28 02:57:37,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,279 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 553 transitions. [2020-11-28 02:57:37,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:37,280 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 553 transitions. [2020-11-28 02:57:37,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:57:37,281 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:37,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:37,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:57:37,282 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:37,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:37,283 INFO L82 PathProgramCache]: Analyzing trace with hash -520856579, now seen corresponding path program 3 times [2020-11-28 02:57:37,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:37,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931419902] [2020-11-28 02:57:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:37,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931419902] [2020-11-28 02:57:37,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:37,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:37,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431557572] [2020-11-28 02:57:37,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:37,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:37,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:37,366 INFO L87 Difference]: Start difference. First operand 228 states and 553 transitions. Second operand 3 states. [2020-11-28 02:57:37,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,430 INFO L93 Difference]: Finished difference Result 194 states and 463 transitions. [2020-11-28 02:57:37,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:37,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-28 02:57:37,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,431 INFO L225 Difference]: With dead ends: 194 [2020-11-28 02:57:37,431 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:57:37,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:37,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:57:37,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:57:37,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:57:37,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:57:37,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-28 02:57:37,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,433 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:37,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:37,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:57:37,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:57:37,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:57:37,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:37 BasicIcfg [2020-11-28 02:57:37,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:37,438 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:37,438 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:37,442 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:37,442 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:33" (3/4) ... [2020-11-28 02:57:37,446 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:57:37,453 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-11-28 02:57:37,461 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 02:57:37,462 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:57:37,462 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:37,462 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:37,531 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7a636a9f-7523-433e-8df8-eb89508e80ee/bin/uautomizer/witness.graphml [2020-11-28 02:57:37,532 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:37,533 INFO L168 Benchmark]: Toolchain (without parser) took 5345.20 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 68.1 MB in the beginning and 47.0 MB in the end (delta: 21.1 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:37,534 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 104.9 MB. Free memory was 77.9 MB in the beginning and 77.8 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:37,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.78 ms. Allocated memory is still 104.9 MB. Free memory was 67.8 MB in the beginning and 61.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:37,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.25 ms. Allocated memory is still 104.9 MB. Free memory was 61.7 MB in the beginning and 59.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:37,538 INFO L168 Benchmark]: Boogie Preprocessor took 58.55 ms. Allocated memory is still 104.9 MB. Free memory was 59.6 MB in the beginning and 58.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:37,539 INFO L168 Benchmark]: RCFGBuilder took 753.53 ms. Allocated memory is still 104.9 MB. Free memory was 58.0 MB in the beginning and 80.6 MB in the end (delta: -22.7 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:37,540 INFO L168 Benchmark]: TraceAbstraction took 3616.27 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 80.2 MB in the beginning and 49.1 MB in the end (delta: 31.1 MB). Peak memory consumption was 65.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:37,540 INFO L168 Benchmark]: Witness Printer took 93.65 ms. Allocated memory is still 138.4 MB. Free memory was 49.1 MB in the beginning and 47.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:37,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 104.9 MB. Free memory was 77.9 MB in the beginning and 77.8 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 718.78 ms. Allocated memory is still 104.9 MB. Free memory was 67.8 MB in the beginning and 61.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.25 ms. Allocated memory is still 104.9 MB. Free memory was 61.7 MB in the beginning and 59.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.55 ms. Allocated memory is still 104.9 MB. Free memory was 59.6 MB in the beginning and 58.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 753.53 ms. Allocated memory is still 104.9 MB. Free memory was 58.0 MB in the beginning and 80.6 MB in the end (delta: -22.7 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3616.27 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 80.2 MB in the beginning and 49.1 MB in the end (delta: 31.1 MB). Peak memory consumption was 65.1 MB. Max. memory is 16.1 GB. * Witness Printer took 93.65 ms. Allocated memory is still 138.4 MB. Free memory was 49.1 MB in the beginning and 47.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1482 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 16 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 107 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 74 PlacesBefore, 35 PlacesAfterwards, 96 TransitionsBefore, 51 TransitionsAfterwards, 3150 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 63 TotalNumberOfCompositions, 5734 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 2 procedures, 71 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 314 SDtfs, 133 SDslu, 117 SDs, 0 SdLazy, 76 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 275 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...