./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe021_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe021_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3b331c69061baff9dd735833d300343e0b2344c ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:35:57,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:35:57,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:35:57,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:35:57,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:35:57,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:35:57,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:35:57,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:35:57,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:35:57,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:35:57,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:35:57,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:35:57,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:35:57,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:35:57,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:35:57,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:35:57,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:35:57,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:35:57,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:35:57,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:35:57,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:35:57,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:35:57,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:35:57,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:35:57,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:35:57,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:35:57,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:35:57,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:35:57,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:35:57,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:35:57,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:35:57,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:35:57,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:35:57,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:35:57,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:35:57,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:35:57,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:35:57,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:35:57,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:35:57,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:35:57,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:35:57,945 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 08:35:57,962 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:35:57,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:35:57,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:35:57,962 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:35:57,963 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:35:57,963 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:35:57,963 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:35:57,963 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:35:57,963 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:35:57,963 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:35:57,963 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:35:57,963 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:35:57,963 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:35:57,963 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:35:57,964 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:35:57,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:35:57,964 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:35:57,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:35:57,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:35:57,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:35:57,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:35:57,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:35:57,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:35:57,965 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:35:57,965 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:35:57,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:35:57,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:35:57,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:35:57,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:35:57,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:35:57,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:35:57,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:35:57,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:35:57,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:35:57,966 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:35:57,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:35:57,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:35:57,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:35:57,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:35:57,967 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3b331c69061baff9dd735833d300343e0b2344c [2020-12-09 08:35:58,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:35:58,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:35:58,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:35:58,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:35:58,152 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:35:58,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe021_tso.opt.i [2020-12-09 08:35:58,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/bin/utaipan/data/90282ce88/a15722d4e9454a27a90991fcaff6721e/FLAG0555e3edf [2020-12-09 08:35:58,629 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:35:58,630 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/sv-benchmarks/c/pthread-wmm/safe021_tso.opt.i [2020-12-09 08:35:58,645 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/bin/utaipan/data/90282ce88/a15722d4e9454a27a90991fcaff6721e/FLAG0555e3edf [2020-12-09 08:35:58,655 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/bin/utaipan/data/90282ce88/a15722d4e9454a27a90991fcaff6721e [2020-12-09 08:35:58,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:35:58,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:35:58,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:35:58,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:35:58,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:35:58,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:35:58" (1/1) ... [2020-12-09 08:35:58,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8b8faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:35:58, skipping insertion in model container [2020-12-09 08:35:58,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:35:58" (1/1) ... [2020-12-09 08:35:58,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:35:58,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:35:58,833 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/sv-benchmarks/c/pthread-wmm/safe021_tso.opt.i[949,962] [2020-12-09 08:35:58,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:35:58,935 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:35:58,943 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/sv-benchmarks/c/pthread-wmm/safe021_tso.opt.i[949,962] [2020-12-09 08:35:58,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:35:59,017 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:35:59,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:35:59 WrapperNode [2020-12-09 08:35:59,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:35:59,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:35:59,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:35:59,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:35:59,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:35:59" (1/1) ... [2020-12-09 08:35:59,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:35:59" (1/1) ... [2020-12-09 08:35:59,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:35:59,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:35:59,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:35:59,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:35:59,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:35:59" (1/1) ... [2020-12-09 08:35:59,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:35:59" (1/1) ... [2020-12-09 08:35:59,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:35:59" (1/1) ... [2020-12-09 08:35:59,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:35:59" (1/1) ... [2020-12-09 08:35:59,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:35:59" (1/1) ... [2020-12-09 08:35:59,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:35:59" (1/1) ... [2020-12-09 08:35:59,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:35:59" (1/1) ... [2020-12-09 08:35:59,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:35:59,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:35:59,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:35:59,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:35:59,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:35:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:35:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 08:35:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 08:35:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:35:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 08:35:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 08:35:59,147 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 08:35:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 08:35:59,148 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 08:35:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 08:35:59,148 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 08:35:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 08:35:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 08:35:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:35:59,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:35:59,149 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 08:35:59,381 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:35:59,381 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 08:35:59,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:35:59 BoogieIcfgContainer [2020-12-09 08:35:59,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:35:59,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:35:59,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:35:59,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:35:59,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:35:58" (1/3) ... [2020-12-09 08:35:59,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6341f33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:35:59, skipping insertion in model container [2020-12-09 08:35:59,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:35:59" (2/3) ... [2020-12-09 08:35:59,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6341f33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:35:59, skipping insertion in model container [2020-12-09 08:35:59,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:35:59" (3/3) ... [2020-12-09 08:35:59,388 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2020-12-09 08:35:59,398 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 08:35:59,398 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:35:59,401 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 08:35:59,401 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 08:35:59,427 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,427 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,428 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,428 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,428 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,428 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,428 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,428 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,430 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,430 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,430 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,430 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,430 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,430 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,431 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,431 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,432 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,432 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,432 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,432 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,433 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,433 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,433 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,433 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,433 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,436 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,436 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,436 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,436 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,441 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,441 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,441 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,441 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,443 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,443 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,444 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,444 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 08:35:59,445 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 08:35:59,456 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 08:35:59,474 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:35:59,474 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:35:59,474 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:35:59,474 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:35:59,474 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:35:59,475 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:35:59,475 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:35:59,475 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:35:59,483 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 08:35:59,484 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 08:35:59,486 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 08:35:59,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-09 08:35:59,517 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-09 08:35:59,517 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 08:35:59,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 08:35:59,522 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 08:36:01,147 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-09 08:36:01,319 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-09 08:36:01,375 INFO L131 LiptonReduction]: Checked pairs total: 2563 [2020-12-09 08:36:01,375 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-09 08:36:01,379 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-09 08:36:01,397 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-09 08:36:01,398 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-09 08:36:01,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 08:36:01,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:36:01,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:36:01,403 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:36:01,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:36:01,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1485857802, now seen corresponding path program 1 times [2020-12-09 08:36:01,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:36:01,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811122154] [2020-12-09 08:36:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:36:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:36:01,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:36:01,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811122154] [2020-12-09 08:36:01,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:36:01,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:36:01,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499275053] [2020-12-09 08:36:01,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 08:36:01,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:36:01,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 08:36:01,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:36:01,558 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-09 08:36:01,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:36:01,579 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-09 08:36:01,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 08:36:01,580 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 08:36:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:36:01,590 INFO L225 Difference]: With dead ends: 362 [2020-12-09 08:36:01,590 INFO L226 Difference]: Without dead ends: 298 [2020-12-09 08:36:01,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:36:01,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-09 08:36:01,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-09 08:36:01,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-09 08:36:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-09 08:36:01,637 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-09 08:36:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:36:01,638 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-09 08:36:01,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 08:36:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-09 08:36:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 08:36:01,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:36:01,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:36:01,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 08:36:01,639 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:36:01,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:36:01,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1183024898, now seen corresponding path program 1 times [2020-12-09 08:36:01,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:36:01,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629141451] [2020-12-09 08:36:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:36:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:36:01,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:36:01,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629141451] [2020-12-09 08:36:01,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:36:01,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:36:01,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053230334] [2020-12-09 08:36:01,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:36:01,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:36:01,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:36:01,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:36:01,725 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-09 08:36:01,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:36:01,764 INFO L93 Difference]: Finished difference Result 516 states and 1393 transitions. [2020-12-09 08:36:01,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:36:01,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 08:36:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:36:01,769 INFO L225 Difference]: With dead ends: 516 [2020-12-09 08:36:01,769 INFO L226 Difference]: Without dead ends: 398 [2020-12-09 08:36:01,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:36:01,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-12-09 08:36:01,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 338. [2020-12-09 08:36:01,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-12-09 08:36:01,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 944 transitions. [2020-12-09 08:36:01,800 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 944 transitions. Word has length 9 [2020-12-09 08:36:01,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:36:01,800 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 944 transitions. [2020-12-09 08:36:01,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:36:01,800 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 944 transitions. [2020-12-09 08:36:01,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 08:36:01,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:36:01,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:36:01,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 08:36:01,802 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:36:01,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:36:01,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1694304319, now seen corresponding path program 1 times [2020-12-09 08:36:01,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:36:01,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105507849] [2020-12-09 08:36:01,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:36:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:36:01,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:36:01,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105507849] [2020-12-09 08:36:01,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:36:01,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:36:01,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961169296] [2020-12-09 08:36:01,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:36:01,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:36:01,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:36:01,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:36:01,884 INFO L87 Difference]: Start difference. First operand 338 states and 944 transitions. Second operand 5 states. [2020-12-09 08:36:01,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:36:01,927 INFO L93 Difference]: Finished difference Result 428 states and 1127 transitions. [2020-12-09 08:36:01,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 08:36:01,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 08:36:01,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:36:01,931 INFO L225 Difference]: With dead ends: 428 [2020-12-09 08:36:01,931 INFO L226 Difference]: Without dead ends: 362 [2020-12-09 08:36:01,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:36:01,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-12-09 08:36:01,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 290. [2020-12-09 08:36:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-12-09 08:36:01,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 804 transitions. [2020-12-09 08:36:01,947 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 804 transitions. Word has length 10 [2020-12-09 08:36:01,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:36:01,947 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 804 transitions. [2020-12-09 08:36:01,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:36:01,947 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 804 transitions. [2020-12-09 08:36:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 08:36:01,949 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:36:01,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:36:01,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 08:36:01,949 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:36:01,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:36:01,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1980956361, now seen corresponding path program 1 times [2020-12-09 08:36:01,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:36:01,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255592933] [2020-12-09 08:36:01,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:36:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:36:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:36:02,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255592933] [2020-12-09 08:36:02,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:36:02,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:36:02,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965191492] [2020-12-09 08:36:02,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:36:02,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:36:02,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:36:02,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:36:02,013 INFO L87 Difference]: Start difference. First operand 290 states and 804 transitions. Second operand 5 states. [2020-12-09 08:36:02,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:36:02,051 INFO L93 Difference]: Finished difference Result 408 states and 1053 transitions. [2020-12-09 08:36:02,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 08:36:02,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 08:36:02,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:36:02,053 INFO L225 Difference]: With dead ends: 408 [2020-12-09 08:36:02,053 INFO L226 Difference]: Without dead ends: 338 [2020-12-09 08:36:02,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:36:02,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-12-09 08:36:02,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 278. [2020-12-09 08:36:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-12-09 08:36:02,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 760 transitions. [2020-12-09 08:36:02,062 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 760 transitions. Word has length 10 [2020-12-09 08:36:02,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:36:02,062 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 760 transitions. [2020-12-09 08:36:02,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:36:02,062 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 760 transitions. [2020-12-09 08:36:02,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 08:36:02,063 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:36:02,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:36:02,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 08:36:02,063 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:36:02,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:36:02,063 INFO L82 PathProgramCache]: Analyzing trace with hash 983803802, now seen corresponding path program 1 times [2020-12-09 08:36:02,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:36:02,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56285432] [2020-12-09 08:36:02,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:36:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:36:02,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:36:02,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56285432] [2020-12-09 08:36:02,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:36:02,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:36:02,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446904252] [2020-12-09 08:36:02,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:36:02,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:36:02,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:36:02,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:36:02,104 INFO L87 Difference]: Start difference. First operand 278 states and 760 transitions. Second operand 5 states. [2020-12-09 08:36:02,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:36:02,142 INFO L93 Difference]: Finished difference Result 340 states and 898 transitions. [2020-12-09 08:36:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:36:02,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 08:36:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:36:02,144 INFO L225 Difference]: With dead ends: 340 [2020-12-09 08:36:02,144 INFO L226 Difference]: Without dead ends: 178 [2020-12-09 08:36:02,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:36:02,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-12-09 08:36:02,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-12-09 08:36:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-09 08:36:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 444 transitions. [2020-12-09 08:36:02,152 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 444 transitions. Word has length 11 [2020-12-09 08:36:02,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:36:02,153 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 444 transitions. [2020-12-09 08:36:02,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:36:02,153 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 444 transitions. [2020-12-09 08:36:02,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 08:36:02,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:36:02,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:36:02,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 08:36:02,154 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:36:02,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:36:02,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1699197876, now seen corresponding path program 1 times [2020-12-09 08:36:02,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:36:02,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317270533] [2020-12-09 08:36:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:36:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:36:02,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:36:02,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317270533] [2020-12-09 08:36:02,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:36:02,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:36:02,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288116092] [2020-12-09 08:36:02,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:36:02,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:36:02,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:36:02,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:36:02,206 INFO L87 Difference]: Start difference. First operand 178 states and 444 transitions. Second operand 4 states. [2020-12-09 08:36:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:36:02,233 INFO L93 Difference]: Finished difference Result 194 states and 437 transitions. [2020-12-09 08:36:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:36:02,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 08:36:02,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:36:02,235 INFO L225 Difference]: With dead ends: 194 [2020-12-09 08:36:02,235 INFO L226 Difference]: Without dead ends: 150 [2020-12-09 08:36:02,235 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 [2020-12-09 08:36:02,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-09 08:36:02,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-12-09 08:36:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-09 08:36:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 339 transitions. [2020-12-09 08:36:02,242 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 339 transitions. Word has length 12 [2020-12-09 08:36:02,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:36:02,242 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 339 transitions. [2020-12-09 08:36:02,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:36:02,242 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 339 transitions. [2020-12-09 08:36:02,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 08:36:02,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:36:02,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:36:02,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 08:36:02,243 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:36:02,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:36:02,244 INFO L82 PathProgramCache]: Analyzing trace with hash -610429625, now seen corresponding path program 1 times [2020-12-09 08:36:02,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:36:02,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823086614] [2020-12-09 08:36:02,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:36:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:36:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:36:02,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823086614] [2020-12-09 08:36:02,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:36:02,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:36:02,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121507477] [2020-12-09 08:36:02,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:36:02,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:36:02,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:36:02,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:36:02,296 INFO L87 Difference]: Start difference. First operand 150 states and 339 transitions. Second operand 5 states. [2020-12-09 08:36:02,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:36:02,332 INFO L93 Difference]: Finished difference Result 137 states and 280 transitions. [2020-12-09 08:36:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:36:02,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 08:36:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:36:02,333 INFO L225 Difference]: With dead ends: 137 [2020-12-09 08:36:02,334 INFO L226 Difference]: Without dead ends: 109 [2020-12-09 08:36:02,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:36:02,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-09 08:36:02,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-12-09 08:36:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-09 08:36:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 220 transitions. [2020-12-09 08:36:02,338 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 220 transitions. Word has length 13 [2020-12-09 08:36:02,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:36:02,339 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 220 transitions. [2020-12-09 08:36:02,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:36:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 220 transitions. [2020-12-09 08:36:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 08:36:02,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:36:02,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:36:02,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 08:36:02,340 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:36:02,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:36:02,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1583313088, now seen corresponding path program 1 times [2020-12-09 08:36:02,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:36:02,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368854801] [2020-12-09 08:36:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:36:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:36:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:36:02,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368854801] [2020-12-09 08:36:02,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:36:02,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:36:02,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041285613] [2020-12-09 08:36:02,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:36:02,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:36:02,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:36:02,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:36:02,386 INFO L87 Difference]: Start difference. First operand 109 states and 220 transitions. Second operand 6 states. [2020-12-09 08:36:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:36:02,414 INFO L93 Difference]: Finished difference Result 98 states and 196 transitions. [2020-12-09 08:36:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 08:36:02,415 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-09 08:36:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:36:02,415 INFO L225 Difference]: With dead ends: 98 [2020-12-09 08:36:02,415 INFO L226 Difference]: Without dead ends: 81 [2020-12-09 08:36:02,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:36:02,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-09 08:36:02,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2020-12-09 08:36:02,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-09 08:36:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 157 transitions. [2020-12-09 08:36:02,417 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 157 transitions. Word has length 15 [2020-12-09 08:36:02,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:36:02,417 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 157 transitions. [2020-12-09 08:36:02,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:36:02,418 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 157 transitions. [2020-12-09 08:36:02,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 08:36:02,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:36:02,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:36:02,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 08:36:02,418 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:36:02,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:36:02,418 INFO L82 PathProgramCache]: Analyzing trace with hash 414255100, now seen corresponding path program 1 times [2020-12-09 08:36:02,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:36:02,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794190320] [2020-12-09 08:36:02,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:36:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:36:02,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:36:02,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794190320] [2020-12-09 08:36:02,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:36:02,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:36:02,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140991576] [2020-12-09 08:36:02,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:36:02,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:36:02,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:36:02,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:36:02,454 INFO L87 Difference]: Start difference. First operand 77 states and 157 transitions. Second operand 5 states. [2020-12-09 08:36:02,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:36:02,470 INFO L93 Difference]: Finished difference Result 76 states and 156 transitions. [2020-12-09 08:36:02,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:36:02,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 08:36:02,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:36:02,470 INFO L225 Difference]: With dead ends: 76 [2020-12-09 08:36:02,470 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 08:36:02,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:36:02,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 08:36:02,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 08:36:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 08:36:02,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 08:36:02,471 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-09 08:36:02,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:36:02,471 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 08:36:02,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:36:02,471 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 08:36:02,471 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 08:36:02,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 08:36:02,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:36:02 BasicIcfg [2020-12-09 08:36:02,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:36:02,474 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:36:02,474 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:36:02,474 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:36:02,474 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:35:59" (3/4) ... [2020-12-09 08:36:02,476 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 08:36:02,480 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 08:36:02,480 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 08:36:02,481 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 08:36:02,484 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 08:36:02,484 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 08:36:02,484 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 08:36:02,484 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 08:36:02,509 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4ceb97dc-1042-45ae-8560-9996dabce028/bin/utaipan/witness.graphml [2020-12-09 08:36:02,510 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:36:02,510 INFO L168 Benchmark]: Toolchain (without parser) took 3851.52 ms. Allocated memory was 132.1 MB in the beginning and 195.0 MB in the end (delta: 62.9 MB). Free memory was 99.6 MB in the beginning and 102.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 60.0 MB. Max. memory is 16.1 GB. [2020-12-09 08:36:02,511 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 75.5 MB. Free memory was 35.9 MB in the beginning and 35.9 MB in the end (delta: 54.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:36:02,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.11 ms. Allocated memory is still 132.1 MB. Free memory was 99.6 MB in the beginning and 87.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 08:36:02,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.18 ms. Allocated memory is still 132.1 MB. Free memory was 87.4 MB in the beginning and 85.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:36:02,512 INFO L168 Benchmark]: Boogie Preprocessor took 24.89 ms. Allocated memory is still 132.1 MB. Free memory was 85.8 MB in the beginning and 84.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:36:02,512 INFO L168 Benchmark]: RCFGBuilder took 297.11 ms. Allocated memory is still 132.1 MB. Free memory was 84.6 MB in the beginning and 62.2 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:36:02,513 INFO L168 Benchmark]: TraceAbstraction took 3089.80 ms. Allocated memory was 132.1 MB in the beginning and 195.0 MB in the end (delta: 62.9 MB). Free memory was 61.6 MB in the beginning and 104.8 MB in the end (delta: -43.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2020-12-09 08:36:02,513 INFO L168 Benchmark]: Witness Printer took 35.98 ms. Allocated memory is still 195.0 MB. Free memory was 104.8 MB in the beginning and 102.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:36:02,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 75.5 MB. Free memory was 35.9 MB in the beginning and 35.9 MB in the end (delta: 54.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 358.11 ms. Allocated memory is still 132.1 MB. Free memory was 99.6 MB in the beginning and 87.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.18 ms. Allocated memory is still 132.1 MB. Free memory was 87.4 MB in the beginning and 85.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.89 ms. Allocated memory is still 132.1 MB. Free memory was 85.8 MB in the beginning and 84.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 297.11 ms. Allocated memory is still 132.1 MB. Free memory was 84.6 MB in the beginning and 62.2 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3089.80 ms. Allocated memory was 132.1 MB in the beginning and 195.0 MB in the end (delta: 62.9 MB). Free memory was 61.6 MB in the beginning and 104.8 MB in the end (delta: -43.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. * Witness Printer took 35.98 ms. Allocated memory is still 195.0 MB. Free memory was 104.8 MB in the beginning and 102.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 782 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 67 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2563 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 220 SDtfs, 216 SDslu, 367 SDs, 0 SdLazy, 141 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 9 MinimizatonAttempts, 196 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 4703 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...