./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe009_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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-wmm/safe009_pso.opt.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 7c27a2daf738120df6d86a3fc8fbf4c5c07f3c56 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:29:04,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:29:04,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:29:04,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:29:04,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:29:04,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:29:04,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:29:04,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:29:04,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:29:04,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:29:04,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:29:04,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:29:04,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:29:04,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:29:04,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:29:04,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:29:04,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:29:04,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:29:04,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:29:04,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:29:04,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:29:04,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:29:04,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:29:04,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:29:04,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:29:04,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:29:04,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:29:04,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:29:04,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:29:04,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:29:04,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:29:04,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:29:04,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:29:04,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:29:04,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:29:04,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:29:04,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:29:04,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:29:04,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:29:04,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:29:04,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:29:04,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:29:04,968 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:29:04,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:29:04,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:29:04,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:29:04,970 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:29:04,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:29:04,971 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:29:04,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:29:04,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:29:04,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:29:04,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:29:04,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:29:04,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:29:04,972 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:29:04,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:29:04,973 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:29:04,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:29:04,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:29:04,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:29:04,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:29:04,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:29:04,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:29:04,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:29:04,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:29:04,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:29:04,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:29:04,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:29:04,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:29:04,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:29:04,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c27a2daf738120df6d86a3fc8fbf4c5c07f3c56 [2020-10-26 00:29:05,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:29:05,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:29:05,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:29:05,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:29:05,409 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:29:05,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe009_pso.opt.i [2020-10-26 00:29:05,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08aa76cdf/1bf76307001248f5af0b9f8b46228c78/FLAG8b3cc424b [2020-10-26 00:29:06,190 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:29:06,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_pso.opt.i [2020-10-26 00:29:06,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08aa76cdf/1bf76307001248f5af0b9f8b46228c78/FLAG8b3cc424b [2020-10-26 00:29:06,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08aa76cdf/1bf76307001248f5af0b9f8b46228c78 [2020-10-26 00:29:06,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:29:06,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:29:06,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:29:06,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:29:06,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:29:06,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:29:06" (1/1) ... [2020-10-26 00:29:06,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ab8d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:06, skipping insertion in model container [2020-10-26 00:29:06,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:29:06" (1/1) ... [2020-10-26 00:29:06,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:29:06,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:29:06,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:29:06,946 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:29:07,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:29:07,180 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:29:07,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:07 WrapperNode [2020-10-26 00:29:07,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:29:07,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:29:07,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:29:07,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:29:07,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:07" (1/1) ... [2020-10-26 00:29:07,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:07" (1/1) ... [2020-10-26 00:29:07,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:29:07,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:29:07,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:29:07,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:29:07,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:07" (1/1) ... [2020-10-26 00:29:07,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:07" (1/1) ... [2020-10-26 00:29:07,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:07" (1/1) ... [2020-10-26 00:29:07,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:07" (1/1) ... [2020-10-26 00:29:07,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:07" (1/1) ... [2020-10-26 00:29:07,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:07" (1/1) ... [2020-10-26 00:29:07,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:07" (1/1) ... [2020-10-26 00:29:07,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:29:07,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:29:07,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:29:07,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:29:07,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:29:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:29:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:29:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:29:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:29:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:29:07,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:29:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:29:07,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:29:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:29:07,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:29:07,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:29:07,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:29:07,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:29:07,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:29:07,430 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:29:07,973 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:29:07,973 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:29:07,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:29:07 BoogieIcfgContainer [2020-10-26 00:29:07,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:29:07,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:29:07,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:29:07,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:29:07,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:29:06" (1/3) ... [2020-10-26 00:29:07,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694bba28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:29:07, skipping insertion in model container [2020-10-26 00:29:07,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:07" (2/3) ... [2020-10-26 00:29:07,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694bba28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:29:07, skipping insertion in model container [2020-10-26 00:29:07,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:29:07" (3/3) ... [2020-10-26 00:29:07,986 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_pso.opt.i [2020-10-26 00:29:07,998 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:29:07,998 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:29:08,004 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:29:08,005 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:29:08,043 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,043 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,043 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,043 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,044 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,044 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,045 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,045 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,045 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,045 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,046 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,046 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,047 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,047 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,047 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,047 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,050 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,050 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,050 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,051 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,057 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,057 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,058 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,058 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,061 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,061 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,061 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,061 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:08,064 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:29:08,078 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 00:29:08,102 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:29:08,102 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:29:08,102 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:29:08,102 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:29:08,103 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:29:08,103 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:29:08,103 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:29:08,103 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:29:08,116 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:29:08,118 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-26 00:29:08,122 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-26 00:29:08,124 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-10-26 00:29:08,170 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-10-26 00:29:08,170 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:29:08,175 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-26 00:29:08,178 INFO L116 LiptonReduction]: Number of co-enabled transitions 1356 [2020-10-26 00:29:10,816 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-26 00:29:10,937 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-26 00:29:10,951 INFO L131 LiptonReduction]: Checked pairs total: 2462 [2020-10-26 00:29:10,952 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-10-26 00:29:10,959 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-26 00:29:10,985 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 282 states. [2020-10-26 00:29:10,987 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2020-10-26 00:29:10,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:29:10,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:10,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:10,997 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:11,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:11,003 INFO L82 PathProgramCache]: Analyzing trace with hash 982566713, now seen corresponding path program 1 times [2020-10-26 00:29:11,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:11,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548351298] [2020-10-26 00:29:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:29:11,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548351298] [2020-10-26 00:29:11,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:11,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:29:11,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281595038] [2020-10-26 00:29:11,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 00:29:11,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:11,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 00:29:11,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:29:11,292 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 2 states. [2020-10-26 00:29:11,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:11,342 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-26 00:29:11,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 00:29:11,345 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-26 00:29:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:11,361 INFO L225 Difference]: With dead ends: 282 [2020-10-26 00:29:11,362 INFO L226 Difference]: Without dead ends: 234 [2020-10-26 00:29:11,363 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 [2020-10-26 00:29:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-26 00:29:11,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-26 00:29:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-26 00:29:11,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2020-10-26 00:29:11,436 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2020-10-26 00:29:11,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:11,437 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2020-10-26 00:29:11,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 00:29:11,437 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2020-10-26 00:29:11,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 00:29:11,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:11,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:11,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:29:11,440 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:11,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:11,441 INFO L82 PathProgramCache]: Analyzing trace with hash 394788315, now seen corresponding path program 1 times [2020-10-26 00:29:11,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:11,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14187774] [2020-10-26 00:29:11,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:29:11,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14187774] [2020-10-26 00:29:11,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:11,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:29:11,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865715708] [2020-10-26 00:29:11,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:29:11,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:11,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:29:11,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:29:11,583 INFO L87 Difference]: Start difference. First operand 234 states and 656 transitions. Second operand 3 states. [2020-10-26 00:29:11,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:11,640 INFO L93 Difference]: Finished difference Result 180 states and 440 transitions. [2020-10-26 00:29:11,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:29:11,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-26 00:29:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:11,646 INFO L225 Difference]: With dead ends: 180 [2020-10-26 00:29:11,646 INFO L226 Difference]: Without dead ends: 180 [2020-10-26 00:29:11,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:29:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-26 00:29:11,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-10-26 00:29:11,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-26 00:29:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 440 transitions. [2020-10-26 00:29:11,683 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 440 transitions. Word has length 9 [2020-10-26 00:29:11,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:11,683 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 440 transitions. [2020-10-26 00:29:11,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:29:11,684 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 440 transitions. [2020-10-26 00:29:11,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 00:29:11,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:11,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:11,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:29:11,689 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:11,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:11,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1410976981, now seen corresponding path program 1 times [2020-10-26 00:29:11,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:11,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825750951] [2020-10-26 00:29:11,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:29:11,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825750951] [2020-10-26 00:29:11,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:11,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:29:11,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753458415] [2020-10-26 00:29:11,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:29:11,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:11,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:29:11,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:29:11,757 INFO L87 Difference]: Start difference. First operand 180 states and 440 transitions. Second operand 4 states. [2020-10-26 00:29:11,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:11,794 INFO L93 Difference]: Finished difference Result 117 states and 251 transitions. [2020-10-26 00:29:11,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:29:11,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-26 00:29:11,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:11,796 INFO L225 Difference]: With dead ends: 117 [2020-10-26 00:29:11,796 INFO L226 Difference]: Without dead ends: 117 [2020-10-26 00:29:11,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:29:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-26 00:29:11,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-26 00:29:11,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-26 00:29:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 251 transitions. [2020-10-26 00:29:11,805 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 251 transitions. Word has length 11 [2020-10-26 00:29:11,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:11,805 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 251 transitions. [2020-10-26 00:29:11,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:29:11,806 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 251 transitions. [2020-10-26 00:29:11,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:29:11,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:11,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:11,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:29:11,808 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:11,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:11,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1834300814, now seen corresponding path program 1 times [2020-10-26 00:29:11,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:11,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893401377] [2020-10-26 00:29:11,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:29:11,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893401377] [2020-10-26 00:29:11,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:11,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:29:11,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692295094] [2020-10-26 00:29:11,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:29:11,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:11,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:29:11,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:29:11,918 INFO L87 Difference]: Start difference. First operand 117 states and 251 transitions. Second operand 5 states. [2020-10-26 00:29:11,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:11,952 INFO L93 Difference]: Finished difference Result 93 states and 203 transitions. [2020-10-26 00:29:11,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:29:11,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-26 00:29:11,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:11,954 INFO L225 Difference]: With dead ends: 93 [2020-10-26 00:29:11,954 INFO L226 Difference]: Without dead ends: 93 [2020-10-26 00:29:11,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:29:11,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-26 00:29:11,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-26 00:29:11,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-26 00:29:11,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 203 transitions. [2020-10-26 00:29:11,960 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 203 transitions. Word has length 14 [2020-10-26 00:29:11,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:11,960 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 203 transitions. [2020-10-26 00:29:11,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:29:11,960 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 203 transitions. [2020-10-26 00:29:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:29:11,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:11,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:11,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:29:11,962 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:11,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:11,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1160615665, now seen corresponding path program 1 times [2020-10-26 00:29:11,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:11,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339299967] [2020-10-26 00:29:11,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:12,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:29:12,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339299967] [2020-10-26 00:29:12,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:12,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:29:12,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510991894] [2020-10-26 00:29:12,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:29:12,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:12,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:29:12,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:29:12,053 INFO L87 Difference]: Start difference. First operand 93 states and 203 transitions. Second operand 4 states. [2020-10-26 00:29:12,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:12,097 INFO L93 Difference]: Finished difference Result 111 states and 233 transitions. [2020-10-26 00:29:12,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:29:12,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-26 00:29:12,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:12,100 INFO L225 Difference]: With dead ends: 111 [2020-10-26 00:29:12,100 INFO L226 Difference]: Without dead ends: 77 [2020-10-26 00:29:12,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:29:12,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-26 00:29:12,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-26 00:29:12,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-26 00:29:12,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 159 transitions. [2020-10-26 00:29:12,107 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 159 transitions. Word has length 17 [2020-10-26 00:29:12,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:12,107 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 159 transitions. [2020-10-26 00:29:12,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:29:12,107 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 159 transitions. [2020-10-26 00:29:12,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:29:12,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:12,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:12,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:29:12,109 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:12,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:12,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1741772653, now seen corresponding path program 2 times [2020-10-26 00:29:12,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:12,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337126401] [2020-10-26 00:29:12,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:29:12,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337126401] [2020-10-26 00:29:12,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:12,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:29:12,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339994502] [2020-10-26 00:29:12,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:29:12,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:12,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:29:12,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:29:12,193 INFO L87 Difference]: Start difference. First operand 77 states and 159 transitions. Second operand 5 states. [2020-10-26 00:29:12,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:12,237 INFO L93 Difference]: Finished difference Result 109 states and 220 transitions. [2020-10-26 00:29:12,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:29:12,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-26 00:29:12,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:12,239 INFO L225 Difference]: With dead ends: 109 [2020-10-26 00:29:12,239 INFO L226 Difference]: Without dead ends: 53 [2020-10-26 00:29:12,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:29:12,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-26 00:29:12,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-26 00:29:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-26 00:29:12,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 99 transitions. [2020-10-26 00:29:12,244 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 99 transitions. Word has length 17 [2020-10-26 00:29:12,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:12,244 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 99 transitions. [2020-10-26 00:29:12,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:29:12,245 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 99 transitions. [2020-10-26 00:29:12,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:29:12,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:12,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:12,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:29:12,246 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:12,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:12,247 INFO L82 PathProgramCache]: Analyzing trace with hash 477726785, now seen corresponding path program 3 times [2020-10-26 00:29:12,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:12,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088216689] [2020-10-26 00:29:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:29:12,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088216689] [2020-10-26 00:29:12,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:12,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:29:12,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828083] [2020-10-26 00:29:12,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:29:12,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:12,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:29:12,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:29:12,310 INFO L87 Difference]: Start difference. First operand 53 states and 99 transitions. Second operand 5 states. [2020-10-26 00:29:12,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:12,337 INFO L93 Difference]: Finished difference Result 52 states and 98 transitions. [2020-10-26 00:29:12,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:29:12,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-26 00:29:12,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:12,338 INFO L225 Difference]: With dead ends: 52 [2020-10-26 00:29:12,338 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:29:12,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:29:12,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:29:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:29:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:29:12,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:29:12,339 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-26 00:29:12,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:12,339 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:29:12,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:29:12,340 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:29:12,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:29:12,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:29:12,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:29:12 BasicIcfg [2020-10-26 00:29:12,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:29:12,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:29:12,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:29:12,346 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:29:12,346 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:29:07" (3/4) ... [2020-10-26 00:29:12,350 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:29:12,360 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:29:12,360 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:29:12,361 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:29:12,368 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-26 00:29:12,368 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:29:12,369 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:29:12,369 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:29:12,435 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:29:12,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:29:12,438 INFO L168 Benchmark]: Toolchain (without parser) took 6019.96 ms. Allocated memory was 52.4 MB in the beginning and 92.3 MB in the end (delta: 39.8 MB). Free memory was 34.5 MB in the beginning and 48.3 MB in the end (delta: -13.9 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:12,439 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 41.9 MB. Free memory was 20.2 MB in the beginning and 20.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:29:12,439 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.51 ms. Allocated memory is still 52.4 MB. Free memory was 33.9 MB in the beginning and 25.6 MB in the end (delta: 8.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:12,440 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.21 ms. Allocated memory is still 52.4 MB. Free memory was 25.4 MB in the beginning and 23.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:12,441 INFO L168 Benchmark]: Boogie Preprocessor took 62.84 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 23.4 MB in the beginning and 44.7 MB in the end (delta: -21.2 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:12,442 INFO L168 Benchmark]: RCFGBuilder took 638.18 ms. Allocated memory is still 62.9 MB. Free memory was 44.4 MB in the beginning and 38.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:12,443 INFO L168 Benchmark]: TraceAbstraction took 4367.17 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 38.4 MB in the beginning and 51.6 MB in the end (delta: -13.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:12,443 INFO L168 Benchmark]: Witness Printer took 90.79 ms. Allocated memory is still 92.3 MB. Free memory was 51.6 MB in the beginning and 48.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:12,449 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 41.9 MB. Free memory was 20.2 MB in the beginning and 20.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 756.51 ms. Allocated memory is still 52.4 MB. Free memory was 33.9 MB in the beginning and 25.6 MB in the end (delta: 8.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.21 ms. Allocated memory is still 52.4 MB. Free memory was 25.4 MB in the beginning and 23.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.84 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 23.4 MB in the beginning and 44.7 MB in the end (delta: -21.2 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 638.18 ms. Allocated memory is still 62.9 MB. Free memory was 44.4 MB in the beginning and 38.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4367.17 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 38.4 MB in the beginning and 51.6 MB in the end (delta: -13.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * Witness Printer took 90.79 ms. Allocated memory is still 92.3 MB. Free memory was 51.6 MB in the beginning and 48.3 MB in the end (delta: 3.2 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 945 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 74 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.8s, 84 PlacesBefore, 31 PlacesAfterwards, 77 TransitionsBefore, 22 TransitionsAfterwards, 1356 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2462 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 111 SDtfs, 79 SDslu, 136 SDs, 0 SdLazy, 58 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2892 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...