./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe004_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4a11509e-ee39-465c-8041-48636af937a4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4a11509e-ee39-465c-8041-48636af937a4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4a11509e-ee39-465c-8041-48636af937a4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4a11509e-ee39-465c-8041-48636af937a4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe004_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4a11509e-ee39-465c-8041-48636af937a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4a11509e-ee39-465c-8041-48636af937a4/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1e4af8ba1782f97c304e0b22f44ea1d3867811d3 ....................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 05:22:26,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:22:26,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:22:26,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:22:26,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:22:26,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:22:26,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:22:26,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:22:26,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:22:26,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:22:26,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:22:26,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:22:26,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:22:26,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:22:26,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:22:26,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:22:26,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:22:26,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:22:26,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:22:26,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:22:26,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:22:26,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:22:26,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:22:26,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:22:26,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:22:26,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:22:26,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:22:26,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:22:26,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:22:26,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:22:26,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:22:26,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:22:26,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:22:26,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:22:26,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:22:26,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:22:26,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:22:26,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:22:26,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:22:26,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:22:26,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:22:26,607 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4a11509e-ee39-465c-8041-48636af937a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 05:22:26,630 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:22:26,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:22:26,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:22:26,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:22:26,632 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:22:26,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:22:26,632 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:22:26,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:22:26,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:22:26,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:22:26,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:22:26,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:22:26,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:22:26,633 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:22:26,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:22:26,634 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:22:26,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:22:26,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:22:26,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:22:26,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:22:26,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:22:26,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:22:26,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:22:26,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:22:26,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:22:26,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 05:22:26,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 05:22:26,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:22:26,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4a11509e-ee39-465c-8041-48636af937a4/bin/uautomizer 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(__VERIFIER_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 -> 1e4af8ba1782f97c304e0b22f44ea1d3867811d3 [2019-11-20 05:22:26,791 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:22:26,804 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:22:26,807 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:22:26,808 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:22:26,809 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:22:26,810 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4a11509e-ee39-465c-8041-48636af937a4/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe004_tso.oepc.i [2019-11-20 05:22:26,863 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4a11509e-ee39-465c-8041-48636af937a4/bin/uautomizer/data/a5297ec84/bc7f0222ad8b45e6a5a8ceab0369d3b3/FLAG0de416642 [2019-11-20 05:22:27,304 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:22:27,304 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4a11509e-ee39-465c-8041-48636af937a4/sv-benchmarks/c/pthread-wmm/safe004_tso.oepc.i [2019-11-20 05:22:27,316 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4a11509e-ee39-465c-8041-48636af937a4/bin/uautomizer/data/a5297ec84/bc7f0222ad8b45e6a5a8ceab0369d3b3/FLAG0de416642 [2019-11-20 05:22:27,328 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4a11509e-ee39-465c-8041-48636af937a4/bin/uautomizer/data/a5297ec84/bc7f0222ad8b45e6a5a8ceab0369d3b3 [2019-11-20 05:22:27,330 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:22:27,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:22:27,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:22:27,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:22:27,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:22:27,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:22:27" (1/1) ... [2019-11-20 05:22:27,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71cb7a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:27, skipping insertion in model container [2019-11-20 05:22:27,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:22:27" (1/1) ... [2019-11-20 05:22:27,345 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:22:27,383 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:22:27,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:22:27,793 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:22:27,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:22:27,921 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:22:27,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:27 WrapperNode [2019-11-20 05:22:27,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:22:27,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:22:27,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:22:27,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:22:27,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:27" (1/1) ... [2019-11-20 05:22:27,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:27" (1/1) ... [2019-11-20 05:22:27,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:22:27,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:22:27,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:22:27,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:22:27,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:27" (1/1) ... [2019-11-20 05:22:27,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:27" (1/1) ... [2019-11-20 05:22:27,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:27" (1/1) ... [2019-11-20 05:22:27,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:27" (1/1) ... [2019-11-20 05:22:27,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:27" (1/1) ... [2019-11-20 05:22:27,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:27" (1/1) ... [2019-11-20 05:22:27,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:27" (1/1) ... [2019-11-20 05:22:27,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:22:27,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:22:27,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:22:27,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:22:27,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a11509e-ee39-465c-8041-48636af937a4/bin/uautomizer/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 [2019-11-20 05:22:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 05:22:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-20 05:22:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 05:22:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 05:22:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-20 05:22:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-20 05:22:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-20 05:22:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-20 05:22:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-20 05:22:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-20 05:22:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-20 05:22:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:22:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:22:28,037 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-20 05:22:28,270 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:22:28,270 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 05:22:28,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:22:28 BoogieIcfgContainer [2019-11-20 05:22:28,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:22:28,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:22:28,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:22:28,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:22:28,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:22:27" (1/3) ... [2019-11-20 05:22:28,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b56982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:22:28, skipping insertion in model container [2019-11-20 05:22:28,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:27" (2/3) ... [2019-11-20 05:22:28,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b56982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:22:28, skipping insertion in model container [2019-11-20 05:22:28,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:22:28" (3/3) ... [2019-11-20 05:22:28,277 INFO L109 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2019-11-20 05:22:28,366 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,367 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,367 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,367 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,368 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,368 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,368 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,368 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,369 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,369 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,369 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,369 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,370 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,370 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,370 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork7_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,370 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork7_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,370 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,370 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,371 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,371 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,371 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,371 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,371 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,372 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,372 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,372 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,372 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,376 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,376 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,376 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,376 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,377 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,377 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,377 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,377 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,378 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,378 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,383 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,384 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork6_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,385 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork6_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,385 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,386 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,387 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,387 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,387 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,388 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,388 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,388 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,389 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,389 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,390 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,390 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,390 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,391 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:22:28,436 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 05:22:28,436 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:22:28,443 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 05:22:28,453 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 05:22:28,473 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:22:28,473 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 05:22:28,473 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:22:28,474 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:22:28,474 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:22:28,474 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:22:28,474 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:22:28,474 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:22:28,491 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 95 places, 74 transitions [2019-11-20 05:22:31,588 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 31743 states. [2019-11-20 05:22:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 31743 states. [2019-11-20 05:22:31,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 05:22:31,648 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:22:31,648 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:22:31,649 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:22:31,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:22:31,654 INFO L82 PathProgramCache]: Analyzing trace with hash -545638952, now seen corresponding path program 1 times [2019-11-20 05:22:31,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:22:31,662 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071485837] [2019-11-20 05:22:31,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:22:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:22:31,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:22:31,992 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071485837] [2019-11-20 05:22:31,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:22:31,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 05:22:31,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318228500] [2019-11-20 05:22:31,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:22:31,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:22:32,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:22:32,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:22:32,013 INFO L87 Difference]: Start difference. First operand 31743 states. Second operand 4 states. [2019-11-20 05:22:32,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:22:32,621 INFO L93 Difference]: Finished difference Result 33012 states and 103292 transitions. [2019-11-20 05:22:32,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 05:22:32,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-11-20 05:22:32,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:22:32,762 INFO L225 Difference]: With dead ends: 33012 [2019-11-20 05:22:32,762 INFO L226 Difference]: Without dead ends: 14274 [2019-11-20 05:22:32,763 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:22:32,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14274 states. [2019-11-20 05:22:33,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14274 to 14274. [2019-11-20 05:22:33,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14274 states. [2019-11-20 05:22:33,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14274 states to 14274 states and 44297 transitions. [2019-11-20 05:22:33,488 INFO L78 Accepts]: Start accepts. Automaton has 14274 states and 44297 transitions. Word has length 30 [2019-11-20 05:22:33,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:22:33,490 INFO L462 AbstractCegarLoop]: Abstraction has 14274 states and 44297 transitions. [2019-11-20 05:22:33,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:22:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand 14274 states and 44297 transitions. [2019-11-20 05:22:33,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 05:22:33,516 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:22:33,516 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:22:33,516 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:22:33,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:22:33,524 INFO L82 PathProgramCache]: Analyzing trace with hash 819902106, now seen corresponding path program 1 times [2019-11-20 05:22:33,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:22:33,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560351667] [2019-11-20 05:22:33,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:22:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:22:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:22:33,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560351667] [2019-11-20 05:22:33,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:22:33,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 05:22:33,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819390074] [2019-11-20 05:22:33,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 05:22:33,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:22:33,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 05:22:33,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:22:33,678 INFO L87 Difference]: Start difference. First operand 14274 states and 44297 transitions. Second operand 5 states. [2019-11-20 05:22:33,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:22:33,879 INFO L93 Difference]: Finished difference Result 14274 states and 42110 transitions. [2019-11-20 05:22:33,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 05:22:33,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-20 05:22:33,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:22:33,928 INFO L225 Difference]: With dead ends: 14274 [2019-11-20 05:22:33,928 INFO L226 Difference]: Without dead ends: 12573 [2019-11-20 05:22:33,929 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:22:34,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12573 states. [2019-11-20 05:22:34,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12573 to 12573. [2019-11-20 05:22:34,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12573 states. [2019-11-20 05:22:34,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12573 states to 12573 states and 38060 transitions. [2019-11-20 05:22:34,325 INFO L78 Accepts]: Start accepts. Automaton has 12573 states and 38060 transitions. Word has length 31 [2019-11-20 05:22:34,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:22:34,326 INFO L462 AbstractCegarLoop]: Abstraction has 12573 states and 38060 transitions. [2019-11-20 05:22:34,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 05:22:34,326 INFO L276 IsEmpty]: Start isEmpty. Operand 12573 states and 38060 transitions. [2019-11-20 05:22:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 05:22:34,347 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:22:34,347 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:22:34,348 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:22:34,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:22:34,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1081115659, now seen corresponding path program 1 times [2019-11-20 05:22:34,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:22:34,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739660221] [2019-11-20 05:22:34,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:22:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:22:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:22:34,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739660221] [2019-11-20 05:22:34,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:22:34,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 05:22:34,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047301391] [2019-11-20 05:22:34,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 05:22:34,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:22:34,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 05:22:34,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 05:22:34,490 INFO L87 Difference]: Start difference. First operand 12573 states and 38060 transitions. Second operand 6 states. [2019-11-20 05:22:34,665 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-11-20 05:22:34,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:22:34,823 INFO L93 Difference]: Finished difference Result 8928 states and 24938 transitions. [2019-11-20 05:22:34,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 05:22:34,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-11-20 05:22:34,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:22:34,841 INFO L225 Difference]: With dead ends: 8928 [2019-11-20 05:22:34,842 INFO L226 Difference]: Without dead ends: 7470 [2019-11-20 05:22:34,842 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-20 05:22:34,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7470 states. [2019-11-20 05:22:35,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7470 to 7470. [2019-11-20 05:22:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7470 states. [2019-11-20 05:22:35,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7470 states to 7470 states and 21050 transitions. [2019-11-20 05:22:35,015 INFO L78 Accepts]: Start accepts. Automaton has 7470 states and 21050 transitions. Word has length 32 [2019-11-20 05:22:35,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:22:35,015 INFO L462 AbstractCegarLoop]: Abstraction has 7470 states and 21050 transitions. [2019-11-20 05:22:35,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 05:22:35,016 INFO L276 IsEmpty]: Start isEmpty. Operand 7470 states and 21050 transitions. [2019-11-20 05:22:35,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 05:22:35,023 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:22:35,023 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:22:35,024 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:22:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:22:35,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1053247750, now seen corresponding path program 1 times [2019-11-20 05:22:35,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:22:35,025 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119330405] [2019-11-20 05:22:35,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:22:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:22:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:22:35,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119330405] [2019-11-20 05:22:35,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:22:35,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 05:22:35,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631218051] [2019-11-20 05:22:35,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:22:35,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:22:35,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:22:35,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:22:35,177 INFO L87 Difference]: Start difference. First operand 7470 states and 21050 transitions. Second operand 7 states. [2019-11-20 05:22:35,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:22:35,434 INFO L93 Difference]: Finished difference Result 10953 states and 30554 transitions. [2019-11-20 05:22:35,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 05:22:35,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2019-11-20 05:22:35,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:22:35,434 INFO L225 Difference]: With dead ends: 10953 [2019-11-20 05:22:35,434 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 05:22:35,436 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2019-11-20 05:22:35,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 05:22:35,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 05:22:35,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 05:22:35,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 05:22:35,437 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2019-11-20 05:22:35,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:22:35,437 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:22:35,437 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:22:35,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 05:22:35,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 05:22:35,440 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 05:22:35,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:22:35 BasicIcfg [2019-11-20 05:22:35,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 05:22:35,444 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:22:35,444 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:22:35,444 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:22:35,445 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:22:28" (3/4) ... [2019-11-20 05:22:35,452 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 05:22:35,471 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-20 05:22:35,471 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-20 05:22:35,471 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-20 05:22:35,475 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-20 05:22:35,475 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 05:22:35,475 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 05:22:35,531 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4a11509e-ee39-465c-8041-48636af937a4/bin/uautomizer/witness.graphml [2019-11-20 05:22:35,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:22:35,532 INFO L168 Benchmark]: Toolchain (without parser) took 8201.15 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 458.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -208.2 MB). Peak memory consumption was 250.1 MB. Max. memory is 11.5 GB. [2019-11-20 05:22:35,533 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:22:35,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 589.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.0 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -204.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:22:35,534 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:22:35,534 INFO L168 Benchmark]: Boogie Preprocessor took 23.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:22:35,535 INFO L168 Benchmark]: RCFGBuilder took 288.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-20 05:22:35,535 INFO L168 Benchmark]: TraceAbstraction took 7171.50 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 286.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -34.9 MB). Peak memory consumption was 251.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:22:35,540 INFO L168 Benchmark]: Witness Printer took 87.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-11-20 05:22:35,541 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 589.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.0 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -204.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 288.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7171.50 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 286.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -34.9 MB). Peak memory consumption was 251.4 MB. Max. memory is 11.5 GB. * Witness Printer took 87.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 13 procedures, 89 locations, 1 error locations. Result: SAFE, OverallTime: 6.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 305 SDtfs, 579 SDslu, 703 SDs, 0 SdLazy, 140 SolverSat, 102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31743occurred 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: 1.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 10778 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...