./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 96f16385 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_1.5.800.v20200727-1323.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-ext/17_szymanski.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 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 11:44:42,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 11:44:42,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 11:44:42,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 11:44:42,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 11:44:42,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 11:44:42,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 11:44:42,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 11:44:42,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 11:44:42,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 11:44:42,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 11:44:42,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 11:44:42,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 11:44:42,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 11:44:42,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 11:44:42,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 11:44:42,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 11:44:42,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 11:44:42,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 11:44:42,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 11:44:42,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 11:44:42,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 11:44:42,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 11:44:42,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 11:44:42,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 11:44:42,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 11:44:42,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 11:44:42,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 11:44:42,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 11:44:42,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 11:44:42,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 11:44:42,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 11:44:42,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 11:44:42,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 11:44:42,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 11:44:42,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 11:44:42,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 11:44:42,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 11:44:42,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 11:44:42,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 11:44:42,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 11:44:42,811 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 11:44:42,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 11:44:42,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 11:44:42,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 11:44:42,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 11:44:42,861 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 11:44:42,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 11:44:42,861 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 11:44:42,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 11:44:42,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 11:44:42,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 11:44:42,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 11:44:42,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 11:44:42,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 11:44:42,863 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 11:44:42,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 11:44:42,864 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 11:44:42,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 11:44:42,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 11:44:42,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 11:44:42,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 11:44:42,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 11:44:42,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 11:44:42,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 11:44:42,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 11:44:42,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 11:44:42,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 11:44:42,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 11:44:42,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 11:44:42,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 11:44:42,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 [2020-12-02 11:44:43,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 11:44:43,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 11:44:43,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 11:44:43,281 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 11:44:43,282 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 11:44:43,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/17_szymanski.i [2020-12-02 11:44:43,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77e94dcb9/db1749bab94440f7abcc504d8065be7d/FLAG8c4314104 [2020-12-02 11:44:44,172 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 11:44:44,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/17_szymanski.i [2020-12-02 11:44:44,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77e94dcb9/db1749bab94440f7abcc504d8065be7d/FLAG8c4314104 [2020-12-02 11:44:44,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77e94dcb9/db1749bab94440f7abcc504d8065be7d [2020-12-02 11:44:44,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 11:44:44,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 11:44:44,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 11:44:44,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 11:44:44,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 11:44:44,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:44:44" (1/1) ... [2020-12-02 11:44:44,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34cd9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:44, skipping insertion in model container [2020-12-02 11:44:44,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:44:44" (1/1) ... [2020-12-02 11:44:44,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 11:44:44,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 11:44:44,861 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/17_szymanski.i[30132,30145] [2020-12-02 11:44:44,868 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/17_szymanski.i[30481,30494] [2020-12-02 11:44:44,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 11:44:44,884 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 11:44:44,933 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/17_szymanski.i[30132,30145] [2020-12-02 11:44:44,939 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/17_szymanski.i[30481,30494] [2020-12-02 11:44:44,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 11:44:45,053 INFO L208 MainTranslator]: Completed translation [2020-12-02 11:44:45,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:45 WrapperNode [2020-12-02 11:44:45,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 11:44:45,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 11:44:45,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 11:44:45,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 11:44:45,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:45" (1/1) ... [2020-12-02 11:44:45,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:45" (1/1) ... [2020-12-02 11:44:45,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 11:44:45,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 11:44:45,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 11:44:45,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 11:44:45,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:45" (1/1) ... [2020-12-02 11:44:45,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:45" (1/1) ... [2020-12-02 11:44:45,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:45" (1/1) ... [2020-12-02 11:44:45,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:45" (1/1) ... [2020-12-02 11:44:45,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:45" (1/1) ... [2020-12-02 11:44:45,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:45" (1/1) ... [2020-12-02 11:44:45,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:45" (1/1) ... [2020-12-02 11:44:45,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 11:44:45,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 11:44:45,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 11:44:45,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 11:44:45,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:45" (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 [2020-12-02 11:44:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-12-02 11:44:45,287 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-12-02 11:44:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 11:44:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 11:44:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 11:44:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 11:44:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 11:44:45,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 11:44:45,290 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 11:44:45,866 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 11:44:45,866 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-02 11:44:45,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:44:45 BoogieIcfgContainer [2020-12-02 11:44:45,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 11:44:45,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 11:44:45,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 11:44:45,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 11:44:45,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:44:44" (1/3) ... [2020-12-02 11:44:45,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2e1e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:44:45, skipping insertion in model container [2020-12-02 11:44:45,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:45" (2/3) ... [2020-12-02 11:44:45,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2e1e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:44:45, skipping insertion in model container [2020-12-02 11:44:45,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:44:45" (3/3) ... [2020-12-02 11:44:45,882 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-12-02 11:44:45,900 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 11:44:45,901 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 11:44:45,905 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-02 11:44:45,906 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 11:44:45,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,941 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,942 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,942 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,942 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,942 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,942 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,943 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,943 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,943 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,943 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,947 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,947 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,948 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,948 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:45,954 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 11:44:45,968 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 11:44:45,992 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 11:44:45,992 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 11:44:45,992 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 11:44:45,993 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 11:44:45,993 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 11:44:45,993 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 11:44:45,993 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 11:44:45,993 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 11:44:46,006 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 11:44:46,009 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 88 transitions, 181 flow [2020-12-02 11:44:46,012 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 88 transitions, 181 flow [2020-12-02 11:44:46,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 88 transitions, 181 flow [2020-12-02 11:44:46,065 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2020-12-02 11:44:46,066 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 11:44:46,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 24/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 140 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 72. Up to 3 conditions per place. [2020-12-02 11:44:46,092 INFO L116 LiptonReduction]: Number of co-enabled transitions 2542 [2020-12-02 11:44:47,757 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-12-02 11:44:48,010 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-12-02 11:44:48,097 INFO L131 LiptonReduction]: Checked pairs total: 4971 [2020-12-02 11:44:48,097 INFO L133 LiptonReduction]: Total number of compositions: 49 [2020-12-02 11:44:48,103 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2020-12-02 11:44:48,123 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2020-12-02 11:44:48,126 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-12-02 11:44:48,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 11:44:48,134 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 11:44:48,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 11:44:48,136 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 11:44:48,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 11:44:48,142 INFO L82 PathProgramCache]: Analyzing trace with hash 2012510747, now seen corresponding path program 1 times [2020-12-02 11:44:48,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 11:44:48,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498555514] [2020-12-02 11:44:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 11:44:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 11:44:48,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 11:44:48,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498555514] [2020-12-02 11:44:48,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 11:44:48,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 11:44:48,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853005402] [2020-12-02 11:44:48,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 11:44:48,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 11:44:48,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 11:44:48,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 11:44:48,342 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2020-12-02 11:44:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 11:44:48,370 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2020-12-02 11:44:48,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 11:44:48,372 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-02 11:44:48,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 11:44:48,387 INFO L225 Difference]: With dead ends: 198 [2020-12-02 11:44:48,387 INFO L226 Difference]: Without dead ends: 198 [2020-12-02 11:44:48,388 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 [2020-12-02 11:44:48,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-02 11:44:48,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-12-02 11:44:48,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-02 11:44:48,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2020-12-02 11:44:48,462 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2020-12-02 11:44:48,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 11:44:48,462 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2020-12-02 11:44:48,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 11:44:48,462 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2020-12-02 11:44:48,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 11:44:48,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 11:44:48,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 11:44:48,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 11:44:48,465 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 11:44:48,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 11:44:48,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1380149915, now seen corresponding path program 1 times [2020-12-02 11:44:48,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 11:44:48,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866241830] [2020-12-02 11:44:48,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 11:44:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 11:44:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 11:44:48,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866241830] [2020-12-02 11:44:48,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 11:44:48,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 11:44:48,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605700951] [2020-12-02 11:44:48,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 11:44:48,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 11:44:48,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 11:44:48,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 11:44:48,540 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2020-12-02 11:44:48,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 11:44:48,576 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2020-12-02 11:44:48,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 11:44:48,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-02 11:44:48,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 11:44:48,582 INFO L225 Difference]: With dead ends: 362 [2020-12-02 11:44:48,583 INFO L226 Difference]: Without dead ends: 362 [2020-12-02 11:44:48,584 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 [2020-12-02 11:44:48,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-12-02 11:44:48,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2020-12-02 11:44:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-12-02 11:44:48,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2020-12-02 11:44:48,611 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2020-12-02 11:44:48,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 11:44:48,611 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2020-12-02 11:44:48,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 11:44:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2020-12-02 11:44:48,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 11:44:48,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 11:44:48,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 11:44:48,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 11:44:48,616 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 11:44:48,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 11:44:48,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1068535658, now seen corresponding path program 1 times [2020-12-02 11:44:48,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 11:44:48,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681500746] [2020-12-02 11:44:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 11:44:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 11:44:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 11:44:48,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681500746] [2020-12-02 11:44:48,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 11:44:48,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 11:44:48,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207394778] [2020-12-02 11:44:48,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 11:44:48,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 11:44:48,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 11:44:48,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 11:44:48,722 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2020-12-02 11:44:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 11:44:48,754 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2020-12-02 11:44:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 11:44:48,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-02 11:44:48,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 11:44:48,763 INFO L225 Difference]: With dead ends: 348 [2020-12-02 11:44:48,764 INFO L226 Difference]: Without dead ends: 348 [2020-12-02 11:44:48,764 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 [2020-12-02 11:44:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-12-02 11:44:48,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2020-12-02 11:44:48,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-02 11:44:48,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2020-12-02 11:44:48,786 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2020-12-02 11:44:48,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 11:44:48,786 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2020-12-02 11:44:48,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 11:44:48,787 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2020-12-02 11:44:48,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-02 11:44:48,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 11:44:48,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 11:44:48,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 11:44:48,790 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 11:44:48,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 11:44:48,790 INFO L82 PathProgramCache]: Analyzing trace with hash 979559035, now seen corresponding path program 1 times [2020-12-02 11:44:48,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 11:44:48,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097410954] [2020-12-02 11:44:48,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 11:44:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 11:44:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 11:44:48,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097410954] [2020-12-02 11:44:48,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 11:44:48,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 11:44:48,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610657665] [2020-12-02 11:44:48,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 11:44:48,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 11:44:48,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 11:44:48,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 11:44:48,833 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 3 states. [2020-12-02 11:44:48,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 11:44:48,892 INFO L93 Difference]: Finished difference Result 238 states and 595 transitions. [2020-12-02 11:44:48,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 11:44:48,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-02 11:44:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 11:44:48,897 INFO L225 Difference]: With dead ends: 238 [2020-12-02 11:44:48,897 INFO L226 Difference]: Without dead ends: 238 [2020-12-02 11:44:48,898 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 [2020-12-02 11:44:48,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-12-02 11:44:48,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-12-02 11:44:48,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-12-02 11:44:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 595 transitions. [2020-12-02 11:44:48,949 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 595 transitions. Word has length 19 [2020-12-02 11:44:48,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 11:44:48,949 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 595 transitions. [2020-12-02 11:44:48,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 11:44:48,950 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 595 transitions. [2020-12-02 11:44:48,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-02 11:44:48,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 11:44:48,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 11:44:48,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 11:44:48,958 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 11:44:48,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 11:44:48,959 INFO L82 PathProgramCache]: Analyzing trace with hash 908200443, now seen corresponding path program 2 times [2020-12-02 11:44:48,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 11:44:48,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668643758] [2020-12-02 11:44:48,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 11:44:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 11:44:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 11:44:49,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668643758] [2020-12-02 11:44:49,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 11:44:49,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 11:44:49,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545586059] [2020-12-02 11:44:49,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 11:44:49,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 11:44:49,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 11:44:49,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 11:44:49,009 INFO L87 Difference]: Start difference. First operand 238 states and 595 transitions. Second operand 3 states. [2020-12-02 11:44:49,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 11:44:49,051 INFO L93 Difference]: Finished difference Result 246 states and 592 transitions. [2020-12-02 11:44:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 11:44:49,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-02 11:44:49,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 11:44:49,054 INFO L225 Difference]: With dead ends: 246 [2020-12-02 11:44:49,055 INFO L226 Difference]: Without dead ends: 245 [2020-12-02 11:44:49,055 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 [2020-12-02 11:44:49,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-12-02 11:44:49,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 243. [2020-12-02 11:44:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-02 11:44:49,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 584 transitions. [2020-12-02 11:44:49,071 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 584 transitions. Word has length 19 [2020-12-02 11:44:49,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 11:44:49,072 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 584 transitions. [2020-12-02 11:44:49,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 11:44:49,072 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 584 transitions. [2020-12-02 11:44:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-02 11:44:49,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 11:44:49,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 11:44:49,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 11:44:49,075 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 11:44:49,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 11:44:49,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1161819517, now seen corresponding path program 3 times [2020-12-02 11:44:49,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 11:44:49,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668572765] [2020-12-02 11:44:49,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 11:44:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 11:44:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 11:44:49,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668572765] [2020-12-02 11:44:49,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 11:44:49,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 11:44:49,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400701048] [2020-12-02 11:44:49,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 11:44:49,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 11:44:49,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 11:44:49,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 11:44:49,140 INFO L87 Difference]: Start difference. First operand 243 states and 584 transitions. Second operand 3 states. [2020-12-02 11:44:49,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 11:44:49,178 INFO L93 Difference]: Finished difference Result 241 states and 568 transitions. [2020-12-02 11:44:49,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 11:44:49,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-02 11:44:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 11:44:49,182 INFO L225 Difference]: With dead ends: 241 [2020-12-02 11:44:49,182 INFO L226 Difference]: Without dead ends: 241 [2020-12-02 11:44:49,184 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 [2020-12-02 11:44:49,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-12-02 11:44:49,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-12-02 11:44:49,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-12-02 11:44:49,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 568 transitions. [2020-12-02 11:44:49,197 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 568 transitions. Word has length 19 [2020-12-02 11:44:49,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 11:44:49,197 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 568 transitions. [2020-12-02 11:44:49,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 11:44:49,197 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 568 transitions. [2020-12-02 11:44:49,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-02 11:44:49,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 11:44:49,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 11:44:49,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 11:44:49,205 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 11:44:49,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 11:44:49,206 INFO L82 PathProgramCache]: Analyzing trace with hash 853429251, now seen corresponding path program 4 times [2020-12-02 11:44:49,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 11:44:49,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33063476] [2020-12-02 11:44:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 11:44:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 11:44:49,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 11:44:49,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33063476] [2020-12-02 11:44:49,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 11:44:49,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 11:44:49,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070786674] [2020-12-02 11:44:49,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 11:44:49,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 11:44:49,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 11:44:49,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 11:44:49,245 INFO L87 Difference]: Start difference. First operand 241 states and 568 transitions. Second operand 3 states. [2020-12-02 11:44:49,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 11:44:49,276 INFO L93 Difference]: Finished difference Result 193 states and 449 transitions. [2020-12-02 11:44:49,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 11:44:49,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-02 11:44:49,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 11:44:49,277 INFO L225 Difference]: With dead ends: 193 [2020-12-02 11:44:49,277 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 11:44:49,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 11:44:49,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 11:44:49,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 11:44:49,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 11:44:49,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 11:44:49,278 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-12-02 11:44:49,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 11:44:49,278 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 11:44:49,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 11:44:49,279 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 11:44:49,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 11:44:49,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 11:44:49,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:44:49 BasicIcfg [2020-12-02 11:44:49,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 11:44:49,284 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 11:44:49,284 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 11:44:49,284 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 11:44:49,285 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:44:45" (3/4) ... [2020-12-02 11:44:49,288 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 11:44:49,296 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-12-02 11:44:49,301 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-02 11:44:49,302 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 11:44:49,302 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 11:44:49,302 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 11:44:49,348 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 11:44:49,348 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 11:44:49,350 INFO L168 Benchmark]: Toolchain (without parser) took 4912.84 ms. Allocated memory was 48.2 MB in the beginning and 104.9 MB in the end (delta: 56.6 MB). Free memory was 23.7 MB in the beginning and 42.5 MB in the end (delta: -18.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2020-12-02 11:44:49,350 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 39.8 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 11:44:49,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.76 ms. Allocated memory is still 48.2 MB. Free memory was 23.4 MB in the beginning and 28.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-12-02 11:44:49,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.57 ms. Allocated memory is still 48.2 MB. Free memory was 28.5 MB in the beginning and 26.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 11:44:49,352 INFO L168 Benchmark]: Boogie Preprocessor took 58.01 ms. Allocated memory is still 48.2 MB. Free memory was 26.7 MB in the beginning and 25.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 11:44:49,353 INFO L168 Benchmark]: RCFGBuilder took 680.88 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 23.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-12-02 11:44:49,354 INFO L168 Benchmark]: TraceAbstraction took 3409.22 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 39.6 MB in the beginning and 45.4 MB in the end (delta: -5.8 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. [2020-12-02 11:44:49,362 INFO L168 Benchmark]: Witness Printer took 64.45 ms. Allocated memory is still 104.9 MB. Free memory was 45.4 MB in the beginning and 42.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 11:44:49,366 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 39.8 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 615.76 ms. Allocated memory is still 48.2 MB. Free memory was 23.4 MB in the beginning and 28.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.57 ms. Allocated memory is still 48.2 MB. Free memory was 28.5 MB in the beginning and 26.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.01 ms. Allocated memory is still 48.2 MB. Free memory was 26.7 MB in the beginning and 25.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 680.88 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 23.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3409.22 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 39.6 MB in the beginning and 45.4 MB in the end (delta: -5.8 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. * Witness Printer took 64.45 ms. Allocated memory is still 104.9 MB. Free memory was 45.4 MB in the beginning and 42.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1204 VarBasedMoverChecksPositive, 63 VarBasedMoverChecksNegative, 36 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 192 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 68 PlacesBefore, 35 PlacesAfterwards, 88 TransitionsBefore, 51 TransitionsAfterwards, 2542 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 49 TotalNumberOfCompositions, 4971 MoverChecksTotal - PositiveResult [Line: 698]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 716]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 65 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 373 SDtfs, 153 SDslu, 139 SDs, 0 SdLazy, 97 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 273 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 2104 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...