./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe033_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe033_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7fc9d0ef4293672145506922c9c77401afe5b406 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:33:55,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:33:55,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:33:55,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:33:55,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:33:55,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:33:55,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:33:55,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:33:55,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:33:55,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:33:55,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:33:55,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:33:55,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:33:55,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:33:55,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:33:55,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:33:55,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:33:55,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:33:55,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:33:55,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:33:55,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:33:55,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:33:55,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:33:55,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:33:55,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:33:55,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:33:55,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:33:55,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:33:55,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:33:55,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:33:55,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:33:55,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:33:55,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:33:55,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:33:55,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:33:55,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:33:55,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:33:55,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:33:55,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:33:55,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:33:55,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:33:55,748 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:33:55,776 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:33:55,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:33:55,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:33:55,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:33:55,779 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:33:55,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:33:55,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:33:55,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:33:55,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:33:55,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:33:55,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:33:55,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:33:55,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:33:55,781 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:33:55,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:33:55,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:33:55,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:33:55,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:33:55,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:33:55,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:33:55,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:33:55,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:33:55,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:33:55,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:33:55,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:33:55,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:33:55,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:33:55,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:33:55,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:33:55,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fc9d0ef4293672145506922c9c77401afe5b406 [2020-10-26 00:33:56,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:33:56,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:33:56,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:33:56,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:33:56,278 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:33:56,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe033_tso.oepc.i [2020-10-26 00:33:56,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba4a17f26/90f056562d9946acbd11b7bd705a76d3/FLAGe7a59e9f7 [2020-10-26 00:33:57,084 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:33:57,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe033_tso.oepc.i [2020-10-26 00:33:57,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba4a17f26/90f056562d9946acbd11b7bd705a76d3/FLAGe7a59e9f7 [2020-10-26 00:33:57,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba4a17f26/90f056562d9946acbd11b7bd705a76d3 [2020-10-26 00:33:57,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:33:57,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:33:57,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:33:57,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:33:57,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:33:57,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:33:57" (1/1) ... [2020-10-26 00:33:57,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33f10b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:33:57, skipping insertion in model container [2020-10-26 00:33:57,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:33:57" (1/1) ... [2020-10-26 00:33:57,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:33:57,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:33:57,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:33:57,871 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:33:57,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:33:58,059 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:33:58,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:33:58 WrapperNode [2020-10-26 00:33:58,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:33:58,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:33:58,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:33:58,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:33:58,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:33:58" (1/1) ... [2020-10-26 00:33:58,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:33:58" (1/1) ... [2020-10-26 00:33:58,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:33:58,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:33:58,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:33:58,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:33:58,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:33:58" (1/1) ... [2020-10-26 00:33:58,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:33:58" (1/1) ... [2020-10-26 00:33:58,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:33:58" (1/1) ... [2020-10-26 00:33:58,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:33:58" (1/1) ... [2020-10-26 00:33:58,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:33:58" (1/1) ... [2020-10-26 00:33:58,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:33:58" (1/1) ... [2020-10-26 00:33:58,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:33:58" (1/1) ... [2020-10-26 00:33:58,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:33:58,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:33:58,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:33:58,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:33:58,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:33:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:33:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:33:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:33:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:33:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:33:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:33:58,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:33:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:33:58,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:33:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:33:58,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:33:58,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:33:58,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:33:58,240 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:33:58,810 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:33:58,810 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:33:58,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:33:58 BoogieIcfgContainer [2020-10-26 00:33:58,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:33:58,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:33:58,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:33:58,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:33:58,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:33:57" (1/3) ... [2020-10-26 00:33:58,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e33de3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:33:58, skipping insertion in model container [2020-10-26 00:33:58,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:33:58" (2/3) ... [2020-10-26 00:33:58,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e33de3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:33:58, skipping insertion in model container [2020-10-26 00:33:58,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:33:58" (3/3) ... [2020-10-26 00:33:58,829 INFO L111 eAbstractionObserver]: Analyzing ICFG safe033_tso.oepc.i [2020-10-26 00:33:58,842 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:33:58,843 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:33:58,849 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:33:58,850 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:33:58,889 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,890 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,890 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,890 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,891 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,891 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,892 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,893 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,893 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,893 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,898 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,898 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,899 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,899 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,908 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,908 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,909 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,910 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:33:58,918 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:33:58,937 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-26 00:33:58,976 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:33:58,977 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:33:58,977 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:33:58,977 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:33:58,977 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:33:58,978 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:33:58,978 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:33:58,978 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:33:58,990 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:33:58,993 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 64 transitions, 138 flow [2020-10-26 00:33:58,997 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 64 transitions, 138 flow [2020-10-26 00:33:58,999 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 68 places, 64 transitions, 138 flow [2020-10-26 00:33:59,055 INFO L129 PetriNetUnfolder]: 3/62 cut-off events. [2020-10-26 00:33:59,055 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:33:59,059 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 62 events. 3/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-10-26 00:33:59,062 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-10-26 00:34:00,541 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-26 00:34:01,117 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-26 00:34:01,237 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 00:34:01,383 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-10-26 00:34:01,483 INFO L131 LiptonReduction]: Checked pairs total: 1620 [2020-10-26 00:34:01,483 INFO L133 LiptonReduction]: Total number of compositions: 67 [2020-10-26 00:34:01,489 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-10-26 00:34:01,502 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-10-26 00:34:01,504 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-26 00:34:01,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-26 00:34:01,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:01,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-26 00:34:01,511 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:01,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:01,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1340707883, now seen corresponding path program 1 times [2020-10-26 00:34:01,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:01,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690077550] [2020-10-26 00:34:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:01,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690077550] [2020-10-26 00:34:01,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:01,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 00:34:01,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340675595] [2020-10-26 00:34:01,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:34:01,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:01,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:34:01,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:34:01,789 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-10-26 00:34:01,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:01,823 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-10-26 00:34:01,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:34:01,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-26 00:34:01,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:01,836 INFO L225 Difference]: With dead ends: 72 [2020-10-26 00:34:01,836 INFO L226 Difference]: Without dead ends: 56 [2020-10-26 00:34:01,837 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 [2020-10-26 00:34:01,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-26 00:34:01,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-26 00:34:01,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-26 00:34:01,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-10-26 00:34:01,881 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-10-26 00:34:01,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:01,882 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-10-26 00:34:01,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:34:01,882 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-10-26 00:34:01,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-26 00:34:01,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:01,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:01,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:34:01,883 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:01,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:01,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1368723103, now seen corresponding path program 1 times [2020-10-26 00:34:01,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:01,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095886349] [2020-10-26 00:34:01,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:01,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:01,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095886349] [2020-10-26 00:34:01,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:01,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:34:01,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013937468] [2020-10-26 00:34:01,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:34:01,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:01,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:34:01,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:34:01,975 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 4 states. [2020-10-26 00:34:02,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:02,018 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-10-26 00:34:02,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:34:02,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-26 00:34:02,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:02,021 INFO L225 Difference]: With dead ends: 56 [2020-10-26 00:34:02,022 INFO L226 Difference]: Without dead ends: 40 [2020-10-26 00:34:02,023 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 [2020-10-26 00:34:02,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-26 00:34:02,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-26 00:34:02,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-26 00:34:02,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-10-26 00:34:02,037 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 7 [2020-10-26 00:34:02,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:02,037 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-10-26 00:34:02,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:34:02,037 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-10-26 00:34:02,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 00:34:02,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:02,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:02,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:34:02,040 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:02,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:02,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1081707285, now seen corresponding path program 1 times [2020-10-26 00:34:02,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:02,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329065707] [2020-10-26 00:34:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:02,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329065707] [2020-10-26 00:34:02,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:02,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:34:02,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037970324] [2020-10-26 00:34:02,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:34:02,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:02,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:34:02,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:34:02,155 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-10-26 00:34:02,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:02,197 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-10-26 00:34:02,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:34:02,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-26 00:34:02,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:02,199 INFO L225 Difference]: With dead ends: 35 [2020-10-26 00:34:02,199 INFO L226 Difference]: Without dead ends: 28 [2020-10-26 00:34:02,199 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 [2020-10-26 00:34:02,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-26 00:34:02,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-26 00:34:02,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-26 00:34:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-10-26 00:34:02,204 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-10-26 00:34:02,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:02,205 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-10-26 00:34:02,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:34:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-10-26 00:34:02,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:34:02,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:02,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:02,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:34:02,207 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:02,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:02,207 INFO L82 PathProgramCache]: Analyzing trace with hash 370642726, now seen corresponding path program 1 times [2020-10-26 00:34:02,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:02,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856227673] [2020-10-26 00:34:02,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:02,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856227673] [2020-10-26 00:34:02,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:02,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:34:02,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589532205] [2020-10-26 00:34:02,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:34:02,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:02,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:34:02,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:34:02,265 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2020-10-26 00:34:02,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:02,315 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-10-26 00:34:02,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:34:02,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-26 00:34:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:02,317 INFO L225 Difference]: With dead ends: 35 [2020-10-26 00:34:02,317 INFO L226 Difference]: Without dead ends: 22 [2020-10-26 00:34:02,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:34:02,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-26 00:34:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-26 00:34:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-26 00:34:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-10-26 00:34:02,323 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 12 [2020-10-26 00:34:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:02,324 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-10-26 00:34:02,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:34:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-10-26 00:34:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:34:02,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:02,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:02,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:34:02,329 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:02,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:02,331 INFO L82 PathProgramCache]: Analyzing trace with hash -7959878, now seen corresponding path program 2 times [2020-10-26 00:34:02,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:02,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011105652] [2020-10-26 00:34:02,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:02,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011105652] [2020-10-26 00:34:02,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:02,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:34:02,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037262145] [2020-10-26 00:34:02,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:34:02,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:02,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:34:02,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:34:02,418 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 3 states. [2020-10-26 00:34:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:02,425 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-10-26 00:34:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:34:02,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-26 00:34:02,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:02,427 INFO L225 Difference]: With dead ends: 21 [2020-10-26 00:34:02,427 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:34:02,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:34:02,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:34:02,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:34:02,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:34:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:34:02,429 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-26 00:34:02,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:02,429 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:34:02,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:34:02,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:34:02,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:34:02,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:34:02,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:34:02 BasicIcfg [2020-10-26 00:34:02,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:34:02,441 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:34:02,441 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:34:02,441 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:34:02,442 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:33:58" (3/4) ... [2020-10-26 00:34:02,446 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:34:02,454 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:34:02,454 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:34:02,461 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-26 00:34:02,462 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:34:02,462 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:34:02,463 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:34:02,530 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:34:02,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:34:02,533 INFO L168 Benchmark]: Toolchain (without parser) took 5185.66 ms. Allocated memory was 48.2 MB in the beginning and 96.5 MB in the end (delta: 48.2 MB). Free memory was 23.5 MB in the beginning and 49.6 MB in the end (delta: -26.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:02,536 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 48.2 MB. Free memory was 30.0 MB in the beginning and 30.0 MB in the end (delta: 34.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:34:02,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.95 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 22.8 MB in the beginning and 45.2 MB in the end (delta: -22.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:02,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.16 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 43.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:34:02,539 INFO L168 Benchmark]: Boogie Preprocessor took 28.67 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 42.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:02,543 INFO L168 Benchmark]: RCFGBuilder took 662.77 ms. Allocated memory is still 62.9 MB. Free memory was 42.0 MB in the beginning and 39.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:02,544 INFO L168 Benchmark]: TraceAbstraction took 3621.16 ms. Allocated memory was 62.9 MB in the beginning and 96.5 MB in the end (delta: 33.6 MB). Free memory was 38.9 MB in the beginning and 52.8 MB in the end (delta: -13.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:02,545 INFO L168 Benchmark]: Witness Printer took 90.15 ms. Allocated memory is still 96.5 MB. Free memory was 52.8 MB in the beginning and 49.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:02,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 48.2 MB. Free memory was 30.0 MB in the beginning and 30.0 MB in the end (delta: 34.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 711.95 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 22.8 MB in the beginning and 45.2 MB in the end (delta: -22.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.16 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 43.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.67 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 42.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 662.77 ms. Allocated memory is still 62.9 MB. Free memory was 42.0 MB in the beginning and 39.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3621.16 ms. Allocated memory was 62.9 MB in the beginning and 96.5 MB in the end (delta: 33.6 MB). Free memory was 38.9 MB in the beginning and 52.8 MB in the end (delta: -13.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. * Witness Printer took 90.15 ms. Allocated memory is still 96.5 MB. Free memory was 52.8 MB in the beginning and 49.6 MB in the end (delta: 3.1 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 565 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 30 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 68 PlacesBefore, 22 PlacesAfterwards, 64 TransitionsBefore, 15 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 67 TotalNumberOfCompositions, 1620 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 58 SDtfs, 56 SDslu, 50 SDs, 0 SdLazy, 32 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 815 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...