./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc.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.oepc.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 5e3a13afdd4064627690571de84930a283adde5b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 00:29:02,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:29:02,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:29:02,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:29:02,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:29:02,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:29:02,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:29:02,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:29:02,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:29:02,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:29:02,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:29:02,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:29:02,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:29:02,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:29:02,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:29:02,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:29:02,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:29:02,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:29:02,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:29:02,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:29:02,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:29:02,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:29:02,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:29:02,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:29:02,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:29:02,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:29:02,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:29:02,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:29:02,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:29:02,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:29:02,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:29:02,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:29:02,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:29:02,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:29:02,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:29:02,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:29:02,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:29:02,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:29:02,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:29:02,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:29:02,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:29:02,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:29:02,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:29:02,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:29:02,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:29:02,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:29:02,505 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:29:02,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:29:02,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:29:02,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:29:02,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:29:02,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:29:02,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:29:02,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:29:02,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:29:02,509 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:29:02,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:29:02,509 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:29:02,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:29:02,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:29:02,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:29:02,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:29:02,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:29:02,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:29:02,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:29:02,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:29:02,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:29:02,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:29:02,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:29:02,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:29:02,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:29:02,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e3a13afdd4064627690571de84930a283adde5b [2020-10-26 00:29:02,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:29:02,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:29:02,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:29:03,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:29:03,002 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:29:03,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc.i [2020-10-26 00:29:03,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d103e8a3/68c9e65bc8434e6b8c99e520e59164f4/FLAGbc2fd2343 [2020-10-26 00:29:03,662 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:29:03,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc.i [2020-10-26 00:29:03,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d103e8a3/68c9e65bc8434e6b8c99e520e59164f4/FLAGbc2fd2343 [2020-10-26 00:29:03,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d103e8a3/68c9e65bc8434e6b8c99e520e59164f4 [2020-10-26 00:29:03,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:29:03,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:29:03,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:29:03,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:29:03,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:29:03,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:29:03" (1/1) ... [2020-10-26 00:29:03,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2b0c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:03, skipping insertion in model container [2020-10-26 00:29:03,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:29:03" (1/1) ... [2020-10-26 00:29:03,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:29:04,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:29:04,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:29:04,477 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:29:04,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:29:04,726 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:29:04,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:04 WrapperNode [2020-10-26 00:29:04,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:29:04,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:29:04,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:29:04,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:29:04,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:04" (1/1) ... [2020-10-26 00:29:04,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:04" (1/1) ... [2020-10-26 00:29:04,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:29:04,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:29:04,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:29:04,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:29:04,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:04" (1/1) ... [2020-10-26 00:29:04,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:04" (1/1) ... [2020-10-26 00:29:04,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:04" (1/1) ... [2020-10-26 00:29:04,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:04" (1/1) ... [2020-10-26 00:29:04,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:04" (1/1) ... [2020-10-26 00:29:04,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:04" (1/1) ... [2020-10-26 00:29:04,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:04" (1/1) ... [2020-10-26 00:29:04,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:29:04,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:29:04,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:29:04,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:29:04,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:04" (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 00:29:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:29:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:29:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:29:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:29:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:29:04,941 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:29:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:29:04,941 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:29:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:29:04,942 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:29:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:29:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:29:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:29:04,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:29:04,949 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 00:29:05,406 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:29:05,407 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:29:05,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:29:05 BoogieIcfgContainer [2020-10-26 00:29:05,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:29:05,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:29:05,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:29:05,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:29:05,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:29:03" (1/3) ... [2020-10-26 00:29:05,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772f48be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:29:05, skipping insertion in model container [2020-10-26 00:29:05,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:04" (2/3) ... [2020-10-26 00:29:05,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772f48be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:29:05, skipping insertion in model container [2020-10-26 00:29:05,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:29:05" (3/3) ... [2020-10-26 00:29:05,423 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc.i [2020-10-26 00:29:05,435 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:29:05,435 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:29:05,441 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:29:05,442 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:29:05,478 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,478 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,479 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,479 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,479 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,479 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,480 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,481 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,481 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,482 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,482 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,482 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,482 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,485 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,485 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,485 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,486 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,492 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,493 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,493 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,493 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,497 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,497 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,497 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,498 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:05,503 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:29:05,521 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 00:29:05,557 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:29:05,558 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:29:05,559 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:29:05,559 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:29:05,559 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:29:05,559 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:29:05,559 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:29:05,560 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:29:05,575 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:29:05,579 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-26 00:29:05,583 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-26 00:29:05,585 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-10-26 00:29:05,657 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-10-26 00:29:05,657 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:29:05,663 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 00:29:05,667 INFO L116 LiptonReduction]: Number of co-enabled transitions 1356 [2020-10-26 00:29:08,239 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-26 00:29:08,803 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-26 00:29:08,966 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-26 00:29:08,987 INFO L131 LiptonReduction]: Checked pairs total: 2462 [2020-10-26 00:29:08,987 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-10-26 00:29:08,993 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-26 00:29:09,017 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 282 states. [2020-10-26 00:29:09,019 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2020-10-26 00:29:09,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:29:09,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:09,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:09,027 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:09,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:09,033 INFO L82 PathProgramCache]: Analyzing trace with hash 982566713, now seen corresponding path program 1 times [2020-10-26 00:29:09,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:09,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560347571] [2020-10-26 00:29:09,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:09,219 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 00:29:09,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560347571] [2020-10-26 00:29:09,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:09,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:29:09,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243091074] [2020-10-26 00:29:09,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 00:29:09,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:09,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 00:29:09,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:29:09,243 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 2 states. [2020-10-26 00:29:09,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:09,272 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-26 00:29:09,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 00:29:09,280 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-26 00:29:09,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:09,296 INFO L225 Difference]: With dead ends: 282 [2020-10-26 00:29:09,297 INFO L226 Difference]: Without dead ends: 234 [2020-10-26 00:29:09,298 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 00:29:09,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-26 00:29:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-26 00:29:09,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-26 00:29:09,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2020-10-26 00:29:09,366 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2020-10-26 00:29:09,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:09,367 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2020-10-26 00:29:09,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 00:29:09,368 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2020-10-26 00:29:09,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 00:29:09,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:09,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:09,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:29:09,370 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:09,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:09,371 INFO L82 PathProgramCache]: Analyzing trace with hash 394788315, now seen corresponding path program 1 times [2020-10-26 00:29:09,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:09,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535829914] [2020-10-26 00:29:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:09,452 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 00:29:09,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535829914] [2020-10-26 00:29:09,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:09,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:29:09,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067314475] [2020-10-26 00:29:09,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:29:09,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:09,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:29:09,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:29:09,456 INFO L87 Difference]: Start difference. First operand 234 states and 656 transitions. Second operand 3 states. [2020-10-26 00:29:09,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:09,485 INFO L93 Difference]: Finished difference Result 180 states and 440 transitions. [2020-10-26 00:29:09,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:29:09,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-26 00:29:09,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:09,488 INFO L225 Difference]: With dead ends: 180 [2020-10-26 00:29:09,488 INFO L226 Difference]: Without dead ends: 180 [2020-10-26 00:29:09,489 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 00:29:09,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-26 00:29:09,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-10-26 00:29:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-26 00:29:09,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 440 transitions. [2020-10-26 00:29:09,505 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 440 transitions. Word has length 9 [2020-10-26 00:29:09,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:09,506 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 440 transitions. [2020-10-26 00:29:09,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:29:09,506 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 440 transitions. [2020-10-26 00:29:09,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 00:29:09,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:09,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:09,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:29:09,508 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:09,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:09,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1410976981, now seen corresponding path program 1 times [2020-10-26 00:29:09,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:09,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118321993] [2020-10-26 00:29:09,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:09,616 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 00:29:09,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118321993] [2020-10-26 00:29:09,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:09,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:29:09,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306328340] [2020-10-26 00:29:09,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:29:09,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:09,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:29:09,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:29:09,620 INFO L87 Difference]: Start difference. First operand 180 states and 440 transitions. Second operand 4 states. [2020-10-26 00:29:09,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:09,660 INFO L93 Difference]: Finished difference Result 117 states and 251 transitions. [2020-10-26 00:29:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:29:09,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-26 00:29:09,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:09,662 INFO L225 Difference]: With dead ends: 117 [2020-10-26 00:29:09,662 INFO L226 Difference]: Without dead ends: 117 [2020-10-26 00:29:09,663 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 00:29:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-26 00:29:09,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-26 00:29:09,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-26 00:29:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 251 transitions. [2020-10-26 00:29:09,672 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 251 transitions. Word has length 11 [2020-10-26 00:29:09,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:09,672 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 251 transitions. [2020-10-26 00:29:09,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:29:09,673 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 251 transitions. [2020-10-26 00:29:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:29:09,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:09,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:09,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:29:09,675 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:09,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1834300814, now seen corresponding path program 1 times [2020-10-26 00:29:09,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:09,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265673544] [2020-10-26 00:29:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:09,772 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 00:29:09,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265673544] [2020-10-26 00:29:09,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:09,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:29:09,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566598866] [2020-10-26 00:29:09,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:29:09,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:09,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:29:09,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:29:09,775 INFO L87 Difference]: Start difference. First operand 117 states and 251 transitions. Second operand 5 states. [2020-10-26 00:29:09,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:09,817 INFO L93 Difference]: Finished difference Result 93 states and 203 transitions. [2020-10-26 00:29:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:29:09,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-26 00:29:09,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:09,819 INFO L225 Difference]: With dead ends: 93 [2020-10-26 00:29:09,819 INFO L226 Difference]: Without dead ends: 93 [2020-10-26 00:29:09,820 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 00:29:09,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-26 00:29:09,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-26 00:29:09,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-26 00:29:09,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 203 transitions. [2020-10-26 00:29:09,826 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 203 transitions. Word has length 14 [2020-10-26 00:29:09,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:09,826 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 203 transitions. [2020-10-26 00:29:09,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:29:09,826 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 203 transitions. [2020-10-26 00:29:09,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:29:09,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:09,828 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 00:29:09,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:29:09,829 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:09,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:09,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1160615665, now seen corresponding path program 1 times [2020-10-26 00:29:09,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:09,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992121065] [2020-10-26 00:29:09,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:09,921 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 00:29:09,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992121065] [2020-10-26 00:29:09,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:09,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:29:09,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745692115] [2020-10-26 00:29:09,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:29:09,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:09,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:29:09,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:29:09,924 INFO L87 Difference]: Start difference. First operand 93 states and 203 transitions. Second operand 4 states. [2020-10-26 00:29:09,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:09,956 INFO L93 Difference]: Finished difference Result 111 states and 233 transitions. [2020-10-26 00:29:09,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:29:09,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-26 00:29:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:09,959 INFO L225 Difference]: With dead ends: 111 [2020-10-26 00:29:09,959 INFO L226 Difference]: Without dead ends: 77 [2020-10-26 00:29:09,960 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 00:29:09,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-26 00:29:09,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-26 00:29:09,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-26 00:29:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 159 transitions. [2020-10-26 00:29:09,964 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 159 transitions. Word has length 17 [2020-10-26 00:29:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:09,965 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 159 transitions. [2020-10-26 00:29:09,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:29:09,965 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 159 transitions. [2020-10-26 00:29:09,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:29:09,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:09,966 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 00:29:09,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:29:09,966 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:09,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:09,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1741772653, now seen corresponding path program 2 times [2020-10-26 00:29:09,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:09,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555379816] [2020-10-26 00:29:09,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:10,041 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 00:29:10,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555379816] [2020-10-26 00:29:10,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:10,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:29:10,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177462046] [2020-10-26 00:29:10,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:29:10,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:10,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:29:10,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:29:10,044 INFO L87 Difference]: Start difference. First operand 77 states and 159 transitions. Second operand 5 states. [2020-10-26 00:29:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:10,096 INFO L93 Difference]: Finished difference Result 109 states and 220 transitions. [2020-10-26 00:29:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:29:10,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-26 00:29:10,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:10,097 INFO L225 Difference]: With dead ends: 109 [2020-10-26 00:29:10,097 INFO L226 Difference]: Without dead ends: 53 [2020-10-26 00:29:10,098 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 00:29:10,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-26 00:29:10,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-26 00:29:10,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-26 00:29:10,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 99 transitions. [2020-10-26 00:29:10,101 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 99 transitions. Word has length 17 [2020-10-26 00:29:10,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:10,101 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 99 transitions. [2020-10-26 00:29:10,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:29:10,102 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 99 transitions. [2020-10-26 00:29:10,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:29:10,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:10,102 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 00:29:10,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:29:10,103 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:10,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:10,103 INFO L82 PathProgramCache]: Analyzing trace with hash 477726785, now seen corresponding path program 3 times [2020-10-26 00:29:10,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:10,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975130581] [2020-10-26 00:29:10,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:10,191 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 00:29:10,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975130581] [2020-10-26 00:29:10,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:10,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:29:10,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571428118] [2020-10-26 00:29:10,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:29:10,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:10,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:29:10,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:29:10,194 INFO L87 Difference]: Start difference. First operand 53 states and 99 transitions. Second operand 5 states. [2020-10-26 00:29:10,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:10,232 INFO L93 Difference]: Finished difference Result 52 states and 98 transitions. [2020-10-26 00:29:10,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:29:10,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-26 00:29:10,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:10,233 INFO L225 Difference]: With dead ends: 52 [2020-10-26 00:29:10,233 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:29:10,234 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 00:29:10,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:29:10,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:29:10,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:29:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:29:10,235 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-26 00:29:10,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:10,235 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:29:10,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:29:10,235 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:29:10,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:29:10,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:29:10,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:29:10 BasicIcfg [2020-10-26 00:29:10,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:29:10,240 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:29:10,240 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:29:10,240 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:29:10,241 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:29:05" (3/4) ... [2020-10-26 00:29:10,244 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:29:10,251 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:29:10,251 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:29:10,251 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:29:10,256 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-26 00:29:10,256 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:29:10,257 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:29:10,257 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:29:10,301 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:29:10,302 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:29:10,303 INFO L168 Benchmark]: Toolchain (without parser) took 6336.80 ms. Allocated memory was 52.4 MB in the beginning and 98.6 MB in the end (delta: 46.1 MB). Free memory was 32.2 MB in the beginning and 40.5 MB in the end (delta: -8.4 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:10,304 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 52.4 MB. Free memory is still 38.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:29:10,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 754.87 ms. Allocated memory is still 52.4 MB. Free memory was 31.6 MB in the beginning and 26.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:10,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.12 ms. Allocated memory is still 52.4 MB. Free memory was 26.8 MB in the beginning and 24.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:10,306 INFO L168 Benchmark]: Boogie Preprocessor took 42.47 ms. Allocated memory is still 52.4 MB. Free memory was 24.8 MB in the beginning and 23.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:10,306 INFO L168 Benchmark]: RCFGBuilder took 549.46 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 23.4 MB in the beginning and 31.6 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:10,307 INFO L168 Benchmark]: TraceAbstraction took 4828.62 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 31.3 MB in the beginning and 43.5 MB in the end (delta: -12.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:10,308 INFO L168 Benchmark]: Witness Printer took 61.92 ms. Allocated memory is still 98.6 MB. Free memory was 43.5 MB in the beginning and 40.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:10,312 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 52.4 MB. Free memory is still 38.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 754.87 ms. Allocated memory is still 52.4 MB. Free memory was 31.6 MB in the beginning and 26.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.12 ms. Allocated memory is still 52.4 MB. Free memory was 26.8 MB in the beginning and 24.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.47 ms. Allocated memory is still 52.4 MB. Free memory was 24.8 MB in the beginning and 23.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 549.46 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 23.4 MB in the beginning and 31.6 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4828.62 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 31.3 MB in the beginning and 43.5 MB in the end (delta: -12.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. * Witness Printer took 61.92 ms. Allocated memory is still 98.6 MB. Free memory was 43.5 MB in the beginning and 40.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 945 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 74 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 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: 4.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, 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, 0.2s 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: 0.0s 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...