./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe033_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe033_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 51e6a13673efe5b33c2463d1fc46db9521e3a5a8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 12:13:06,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:13:06,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:13:06,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:13:06,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:13:06,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:13:06,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:13:06,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:13:06,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:13:06,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:13:06,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:13:06,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:13:06,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:13:06,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:13:06,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:13:06,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:13:06,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:13:06,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:13:06,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:13:06,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:13:06,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:13:06,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:13:06,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:13:06,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:13:06,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:13:06,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:13:06,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:13:06,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:13:06,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:13:06,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:13:06,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:13:06,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:13:06,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:13:06,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:13:06,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:13:06,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:13:06,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:13:06,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:13:06,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:13:06,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:13:06,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:13:06,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:13:06,965 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:13:06,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:13:06,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:13:06,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:13:06,967 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:13:06,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:13:06,968 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:13:06,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:13:06,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:13:06,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:13:06,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:13:06,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:13:06,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:13:06,969 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:13:06,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:13:06,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:13:06,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:13:06,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:13:06,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:13:06,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:13:06,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:13:06,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:13:06,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:13:06,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:13:06,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:13:06,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:13:06,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:13:06,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:13:06,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:13:06,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51e6a13673efe5b33c2463d1fc46db9521e3a5a8 [2020-12-02 12:13:07,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:13:07,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:13:07,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:13:07,459 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:13:07,462 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:13:07,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe033_tso.opt.i [2020-12-02 12:13:07,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0de7b1bf/d8a285efe75b437db4679140e2230755/FLAG9d4d43ea8 [2020-12-02 12:13:08,429 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:13:08,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe033_tso.opt.i [2020-12-02 12:13:08,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0de7b1bf/d8a285efe75b437db4679140e2230755/FLAG9d4d43ea8 [2020-12-02 12:13:08,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0de7b1bf/d8a285efe75b437db4679140e2230755 [2020-12-02 12:13:08,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:13:08,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:13:08,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:13:08,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:13:08,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:13:08,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:13:08" (1/1) ... [2020-12-02 12:13:08,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1475ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:08, skipping insertion in model container [2020-12-02 12:13:08,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:13:08" (1/1) ... [2020-12-02 12:13:08,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:13:08,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:13:08,986 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe033_tso.opt.i[949,962] [2020-12-02 12:13:09,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:13:09,296 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:13:09,318 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe033_tso.opt.i[949,962] [2020-12-02 12:13:09,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:13:09,464 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:13:09,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:09 WrapperNode [2020-12-02 12:13:09,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:13:09,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:13:09,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:13:09,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:13:09,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:09" (1/1) ... [2020-12-02 12:13:09,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:09" (1/1) ... [2020-12-02 12:13:09,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:13:09,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:13:09,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:13:09,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:13:09,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:09" (1/1) ... [2020-12-02 12:13:09,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:09" (1/1) ... [2020-12-02 12:13:09,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:09" (1/1) ... [2020-12-02 12:13:09,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:09" (1/1) ... [2020-12-02 12:13:09,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:09" (1/1) ... [2020-12-02 12:13:09,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:09" (1/1) ... [2020-12-02 12:13:09,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:09" (1/1) ... [2020-12-02 12:13:09,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:13:09,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:13:09,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:13:09,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:13:09,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:13:09,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:13:09,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:13:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:13:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:13:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:13:09,676 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:13:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:13:09,677 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:13:09,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:13:09,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:13:09,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:13:09,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:13:09,679 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 12:13:10,091 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:13:10,097 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:13:10,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:13:10 BoogieIcfgContainer [2020-12-02 12:13:10,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:13:10,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:13:10,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:13:10,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:13:10,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:13:08" (1/3) ... [2020-12-02 12:13:10,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d399c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:13:10, skipping insertion in model container [2020-12-02 12:13:10,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:09" (2/3) ... [2020-12-02 12:13:10,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d399c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:13:10, skipping insertion in model container [2020-12-02 12:13:10,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:13:10" (3/3) ... [2020-12-02 12:13:10,127 INFO L111 eAbstractionObserver]: Analyzing ICFG safe033_tso.opt.i [2020-12-02 12:13:10,157 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:13:10,158 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:13:10,162 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:13:10,164 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:13:10,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,222 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,222 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,223 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,223 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,223 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,223 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,227 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,227 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,228 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,228 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,228 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,228 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,231 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,232 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,232 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,233 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,235 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,235 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,235 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,239 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,240 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,250 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,251 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:10,254 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:13:10,271 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-02 12:13:10,317 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:13:10,318 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:13:10,318 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:13:10,318 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:13:10,318 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:13:10,318 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:13:10,318 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:13:10,318 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:13:10,336 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:13:10,338 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 60 transitions, 130 flow [2020-12-02 12:13:10,343 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 60 transitions, 130 flow [2020-12-02 12:13:10,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 60 transitions, 130 flow [2020-12-02 12:13:10,442 INFO L129 PetriNetUnfolder]: 2/58 cut-off events. [2020-12-02 12:13:10,443 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:13:10,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 58 events. 2/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2020-12-02 12:13:10,463 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2020-12-02 12:13:12,107 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-02 12:13:12,651 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-02 12:13:12,952 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-02 12:13:13,455 INFO L131 LiptonReduction]: Checked pairs total: 1424 [2020-12-02 12:13:13,455 INFO L133 LiptonReduction]: Total number of compositions: 56 [2020-12-02 12:13:13,463 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-12-02 12:13:13,478 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-12-02 12:13:13,480 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-12-02 12:13:13,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-02 12:13:13,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:13,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-02 12:13:13,487 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:13,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:13,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1953878630, now seen corresponding path program 1 times [2020-12-02 12:13:13,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:13,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291750117] [2020-12-02 12:13:13,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:13,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:13:13,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291750117] [2020-12-02 12:13:13,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:13,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:13:13,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985001919] [2020-12-02 12:13:13,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:13:13,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:13,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:13:13,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:13:13,822 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-12-02 12:13:13,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:13,879 INFO L93 Difference]: Finished difference Result 100 states and 199 transitions. [2020-12-02 12:13:13,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:13:13,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-02 12:13:13,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:13,896 INFO L225 Difference]: With dead ends: 100 [2020-12-02 12:13:13,896 INFO L226 Difference]: Without dead ends: 64 [2020-12-02 12:13:13,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:13:13,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-02 12:13:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-12-02 12:13:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-02 12:13:13,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 113 transitions. [2020-12-02 12:13:13,961 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 113 transitions. Word has length 6 [2020-12-02 12:13:13,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:13,962 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 113 transitions. [2020-12-02 12:13:13,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:13:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 113 transitions. [2020-12-02 12:13:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-02 12:13:13,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:13,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:13,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:13:13,964 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:13,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:13,964 INFO L82 PathProgramCache]: Analyzing trace with hash -458346217, now seen corresponding path program 1 times [2020-12-02 12:13:13,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:13,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962455651] [2020-12-02 12:13:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:14,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:13:14,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962455651] [2020-12-02 12:13:14,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:14,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:13:14,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973936727] [2020-12-02 12:13:14,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:13:14,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:14,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:13:14,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:13:14,100 INFO L87 Difference]: Start difference. First operand 58 states and 113 transitions. Second operand 4 states. [2020-12-02 12:13:14,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:14,129 INFO L93 Difference]: Finished difference Result 60 states and 101 transitions. [2020-12-02 12:13:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:13:14,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-02 12:13:14,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:14,131 INFO L225 Difference]: With dead ends: 60 [2020-12-02 12:13:14,131 INFO L226 Difference]: Without dead ends: 42 [2020-12-02 12:13:14,132 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 [2020-12-02 12:13:14,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-02 12:13:14,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-02 12:13:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-02 12:13:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 66 transitions. [2020-12-02 12:13:14,139 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 66 transitions. Word has length 7 [2020-12-02 12:13:14,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:14,140 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 66 transitions. [2020-12-02 12:13:14,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:13:14,140 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 66 transitions. [2020-12-02 12:13:14,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:13:14,141 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:14,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:14,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:13:14,142 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:14,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:14,142 INFO L82 PathProgramCache]: Analyzing trace with hash 820636701, now seen corresponding path program 1 times [2020-12-02 12:13:14,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:14,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265343962] [2020-12-02 12:13:14,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:13:14,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265343962] [2020-12-02 12:13:14,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:14,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:13:14,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711386936] [2020-12-02 12:13:14,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:13:14,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:14,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:13:14,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:13:14,249 INFO L87 Difference]: Start difference. First operand 42 states and 66 transitions. Second operand 5 states. [2020-12-02 12:13:14,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:14,283 INFO L93 Difference]: Finished difference Result 38 states and 56 transitions. [2020-12-02 12:13:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:13:14,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-02 12:13:14,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:14,285 INFO L225 Difference]: With dead ends: 38 [2020-12-02 12:13:14,285 INFO L226 Difference]: Without dead ends: 22 [2020-12-02 12:13:14,285 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 [2020-12-02 12:13:14,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-02 12:13:14,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-12-02 12:13:14,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-02 12:13:14,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2020-12-02 12:13:14,289 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 9 [2020-12-02 12:13:14,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:14,290 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2020-12-02 12:13:14,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:13:14,290 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2020-12-02 12:13:14,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:13:14,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:14,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:14,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:13:14,291 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:14,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:14,292 INFO L82 PathProgramCache]: Analyzing trace with hash -480641921, now seen corresponding path program 1 times [2020-12-02 12:13:14,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:14,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228033095] [2020-12-02 12:13:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:14,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:13:14,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228033095] [2020-12-02 12:13:14,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:14,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:13:14,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483637230] [2020-12-02 12:13:14,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:13:14,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:14,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:13:14,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:13:14,358 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand 4 states. [2020-12-02 12:13:14,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:14,381 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2020-12-02 12:13:14,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:13:14,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-02 12:13:14,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:14,382 INFO L225 Difference]: With dead ends: 21 [2020-12-02 12:13:14,382 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:13:14,382 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 [2020-12-02 12:13:14,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:13:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:13:14,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:13:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:13:14,384 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-12-02 12:13:14,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:14,384 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:13:14,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:13:14,384 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:13:14,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:13:14,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:13:14,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:13:14 BasicIcfg [2020-12-02 12:13:14,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:13:14,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:13:14,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:13:14,390 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:13:14,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:13:10" (3/4) ... [2020-12-02 12:13:14,394 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:13:14,402 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:13:14,403 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:13:14,408 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-02 12:13:14,409 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:13:14,409 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:13:14,409 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:13:14,453 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:13:14,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:13:14,455 INFO L168 Benchmark]: Toolchain (without parser) took 5772.30 ms. Allocated memory was 48.2 MB in the beginning and 104.9 MB in the end (delta: 56.6 MB). Free memory was 24.8 MB in the beginning and 61.2 MB in the end (delta: -36.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:14,456 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 37.7 MB. Free memory was 20.6 MB in the beginning and 20.6 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:13:14,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 780.54 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.6 MB in the beginning and 38.3 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:14,457 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.89 ms. Allocated memory is still 58.7 MB. Free memory was 38.3 MB in the beginning and 36.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:14,458 INFO L168 Benchmark]: Boogie Preprocessor took 32.08 ms. Allocated memory is still 58.7 MB. Free memory was 36.3 MB in the beginning and 34.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:14,459 INFO L168 Benchmark]: RCFGBuilder took 546.75 ms. Allocated memory is still 58.7 MB. Free memory was 34.9 MB in the beginning and 29.4 MB in the end (delta: 5.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:14,460 INFO L168 Benchmark]: TraceAbstraction took 4280.79 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 29.0 MB in the beginning and 63.3 MB in the end (delta: -34.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:14,461 INFO L168 Benchmark]: Witness Printer took 63.75 ms. Allocated memory is still 104.9 MB. Free memory was 63.3 MB in the beginning and 61.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:14,467 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 37.7 MB. Free memory was 20.6 MB in the beginning and 20.6 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 780.54 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.6 MB in the beginning and 38.3 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.89 ms. Allocated memory is still 58.7 MB. Free memory was 38.3 MB in the beginning and 36.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.08 ms. Allocated memory is still 58.7 MB. Free memory was 36.3 MB in the beginning and 34.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 546.75 ms. Allocated memory is still 58.7 MB. Free memory was 34.9 MB in the beginning and 29.4 MB in the end (delta: 5.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4280.79 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 29.0 MB in the beginning and 63.3 MB in the end (delta: -34.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Witness Printer took 63.75 ms. Allocated memory is still 104.9 MB. Free memory was 63.3 MB in the beginning and 61.2 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 458 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 3 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 39 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 65 PlacesBefore, 22 PlacesAfterwards, 60 TransitionsBefore, 15 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 56 TotalNumberOfCompositions, 1424 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 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 43 SDtfs, 54 SDslu, 34 SDs, 0 SdLazy, 28 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...