./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe036_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe036_power.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/bin/uautomizer --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 b7679b93c90de704915c51ce912c58e2ab0edd1e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:55:55,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:55:55,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:55:55,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:55:55,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:55:55,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:55:55,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:55:55,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:55:55,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:55:55,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:55:55,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:55:55,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:55:55,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:55:55,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:55:55,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:55:55,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:55:55,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:55:55,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:55:55,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:55:55,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:55:55,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:55:55,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:55:55,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:55:55,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:55:55,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:55:55,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:55:55,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:55:55,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:55:55,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:55:55,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:55:55,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:55:55,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:55:55,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:55:55,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:55:55,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:55:55,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:55:55,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:55:55,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:55:55,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:55:55,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:55:55,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:55:55,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:55:55,462 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:55:55,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:55:55,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:55:55,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:55:55,464 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:55:55,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:55:55,465 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:55:55,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:55:55,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:55:55,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:55:55,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:55:55,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:55:55,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:55:55,467 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:55:55,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:55:55,467 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:55:55,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:55:55,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:55:55,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:55:55,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:55:55,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:55:55,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:55:55,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:55:55,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:55:55,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:55:55,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:55:55,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:55:55,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:55:55,470 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:55:55,470 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:/tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7679b93c90de704915c51ce912c58e2ab0edd1e [2020-11-29 23:55:55,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:55:55,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:55:55,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:55:55,830 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:55:55,833 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:55:55,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe036_power.oepc.i [2020-11-29 23:55:55,912 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/bin/uautomizer/data/8e97d4657/b2ac84dbb0b84408958389f59dca6869/FLAG59e34d819 [2020-11-29 23:55:56,529 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:55:56,532 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/sv-benchmarks/c/pthread-wmm/safe036_power.oepc.i [2020-11-29 23:55:56,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/bin/uautomizer/data/8e97d4657/b2ac84dbb0b84408958389f59dca6869/FLAG59e34d819 [2020-11-29 23:55:56,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/bin/uautomizer/data/8e97d4657/b2ac84dbb0b84408958389f59dca6869 [2020-11-29 23:55:56,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:55:56,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:55:56,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:55:56,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:55:56,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:55:56,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:55:56" (1/1) ... [2020-11-29 23:55:56,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4c3411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:56, skipping insertion in model container [2020-11-29 23:55:56,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:55:56" (1/1) ... [2020-11-29 23:55:56,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:55:56,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:55:57,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:55:57,263 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:55:57,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:55:57,383 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:55:57,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:57 WrapperNode [2020-11-29 23:55:57,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:55:57,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:55:57,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:55:57,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:55:57,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:57" (1/1) ... [2020-11-29 23:55:57,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:57" (1/1) ... [2020-11-29 23:55:57,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:55:57,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:55:57,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:55:57,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:55:57,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:57" (1/1) ... [2020-11-29 23:55:57,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:57" (1/1) ... [2020-11-29 23:55:57,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:57" (1/1) ... [2020-11-29 23:55:57,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:57" (1/1) ... [2020-11-29 23:55:57,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:57" (1/1) ... [2020-11-29 23:55:57,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:57" (1/1) ... [2020-11-29 23:55:57,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:57" (1/1) ... [2020-11-29 23:55:57,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:55:57,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:55:57,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:55:57,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:55:57,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/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 [2020-11-29 23:55:57,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:55:57,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 23:55:57,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:55:57,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:55:57,574 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 23:55:57,574 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 23:55:57,575 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 23:55:57,575 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 23:55:57,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:55:57,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 23:55:57,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:55:57,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:55:57,578 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-29 23:55:58,045 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:55:58,045 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 23:55:58,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:58 BoogieIcfgContainer [2020-11-29 23:55:58,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:55:58,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:55:58,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:55:58,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:55:58,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:55:56" (1/3) ... [2020-11-29 23:55:58,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f0460a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:55:58, skipping insertion in model container [2020-11-29 23:55:58,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:57" (2/3) ... [2020-11-29 23:55:58,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f0460a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:55:58, skipping insertion in model container [2020-11-29 23:55:58,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:58" (3/3) ... [2020-11-29 23:55:58,055 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_power.oepc.i [2020-11-29 23:55:58,065 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 23:55:58,066 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:55:58,070 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:55:58,071 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 23:55:58,093 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,093 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,093 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,094 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,094 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,094 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,095 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,095 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,095 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,095 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,096 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,096 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,099 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,099 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,099 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,099 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,112 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,112 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,112 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,112 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:55:58,115 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 23:55:58,125 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 23:55:58,144 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:55:58,144 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:55:58,144 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:55:58,144 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:55:58,144 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:55:58,145 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:55:58,145 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:55:58,145 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:55:58,155 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 23:55:58,157 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-29 23:55:58,159 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-29 23:55:58,160 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-11-29 23:55:58,197 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-11-29 23:55:58,197 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 23:55:58,206 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-11-29 23:55:58,209 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-11-29 23:55:59,794 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-29 23:56:00,441 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-29 23:56:00,566 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-29 23:56:00,606 INFO L131 LiptonReduction]: Checked pairs total: 1418 [2020-11-29 23:56:00,606 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-11-29 23:56:00,613 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-11-29 23:56:00,627 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-11-29 23:56:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-11-29 23:56:00,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 23:56:00,635 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:00,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:56:00,636 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:00,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:00,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1338798449, now seen corresponding path program 1 times [2020-11-29 23:56:00,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:00,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481161220] [2020-11-29 23:56:00,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:00,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481161220] [2020-11-29 23:56:00,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:00,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:56:00,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483675326] [2020-11-29 23:56:00,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:56:00,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:00,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:56:00,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:56:00,821 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-11-29 23:56:00,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:00,844 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-11-29 23:56:00,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:56:00,846 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-29 23:56:00,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:00,856 INFO L225 Difference]: With dead ends: 90 [2020-11-29 23:56:00,856 INFO L226 Difference]: Without dead ends: 74 [2020-11-29 23:56:00,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:56:00,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-29 23:56:00,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-29 23:56:00,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-29 23:56:00,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-11-29 23:56:00,910 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-11-29 23:56:00,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:00,911 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-11-29 23:56:00,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:56:00,912 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-11-29 23:56:00,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 23:56:00,913 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:00,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:00,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:56:00,914 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:00,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:00,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1446900907, now seen corresponding path program 1 times [2020-11-29 23:56:00,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:00,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754352413] [2020-11-29 23:56:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:01,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754352413] [2020-11-29 23:56:01,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:01,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:56:01,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26323213] [2020-11-29 23:56:01,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:56:01,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:01,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:56:01,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:56:01,136 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-11-29 23:56:01,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:01,191 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-11-29 23:56:01,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:56:01,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 23:56:01,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:01,193 INFO L225 Difference]: With dead ends: 63 [2020-11-29 23:56:01,193 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 23:56:01,194 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 [2020-11-29 23:56:01,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 23:56:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-29 23:56:01,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 23:56:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2020-11-29 23:56:01,207 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2020-11-29 23:56:01,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:01,208 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2020-11-29 23:56:01,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:56:01,208 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2020-11-29 23:56:01,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:56:01,210 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:01,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:01,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:56:01,210 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:01,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:01,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1074461755, now seen corresponding path program 1 times [2020-11-29 23:56:01,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:01,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276859431] [2020-11-29 23:56:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:01,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276859431] [2020-11-29 23:56:01,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:01,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:56:01,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374824092] [2020-11-29 23:56:01,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:56:01,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:01,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:56:01,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:01,352 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 5 states. [2020-11-29 23:56:01,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:01,405 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2020-11-29 23:56:01,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:56:01,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-29 23:56:01,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:01,407 INFO L225 Difference]: With dead ends: 36 [2020-11-29 23:56:01,407 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 23:56:01,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:56:01,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 23:56:01,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 23:56:01,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 23:56:01,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-11-29 23:56:01,411 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2020-11-29 23:56:01,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:01,411 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-11-29 23:56:01,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:56:01,411 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-11-29 23:56:01,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:56:01,412 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:01,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:01,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:56:01,412 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:01,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:01,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1774648449, now seen corresponding path program 1 times [2020-11-29 23:56:01,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:01,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3347637] [2020-11-29 23:56:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:01,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:01,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3347637] [2020-11-29 23:56:01,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:01,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:56:01,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796100646] [2020-11-29 23:56:01,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:56:01,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:01,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:56:01,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:01,492 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2020-11-29 23:56:01,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:01,549 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2020-11-29 23:56:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:56:01,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-29 23:56:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:01,551 INFO L225 Difference]: With dead ends: 37 [2020-11-29 23:56:01,551 INFO L226 Difference]: Without dead ends: 17 [2020-11-29 23:56:01,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:56:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-29 23:56:01,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 23:56:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 23:56:01,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-11-29 23:56:01,553 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-11-29 23:56:01,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:01,554 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-29 23:56:01,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:56:01,554 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-11-29 23:56:01,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:56:01,554 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:01,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:01,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 23:56:01,555 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:01,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:01,555 INFO L82 PathProgramCache]: Analyzing trace with hash 290614237, now seen corresponding path program 2 times [2020-11-29 23:56:01,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:01,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448931316] [2020-11-29 23:56:01,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:01,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448931316] [2020-11-29 23:56:01,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:01,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:56:01,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31509679] [2020-11-29 23:56:01,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:56:01,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:01,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:56:01,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:01,649 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-11-29 23:56:01,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:01,675 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-11-29 23:56:01,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:56:01,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-29 23:56:01,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:01,675 INFO L225 Difference]: With dead ends: 16 [2020-11-29 23:56:01,676 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:56:01,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:56:01,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:56:01,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:56:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:56:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:56:01,677 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-29 23:56:01,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:01,677 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:56:01,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:56:01,677 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:56:01,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:56:01,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 23:56:01,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:56:01 BasicIcfg [2020-11-29 23:56:01,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:56:01,681 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:56:01,681 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:56:01,681 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:56:01,682 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:58" (3/4) ... [2020-11-29 23:56:01,685 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:56:01,691 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 23:56:01,692 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 23:56:01,696 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-29 23:56:01,696 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 23:56:01,697 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:56:01,697 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:56:01,743 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b7ec451f-436d-433f-88eb-0a7f01e13e85/bin/uautomizer/witness.graphml [2020-11-29 23:56:01,743 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:56:01,745 INFO L168 Benchmark]: Toolchain (without parser) took 4949.30 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 61.7 MB in the beginning and 65.5 MB in the end (delta: -3.8 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:01,745 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 50.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:56:01,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.51 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 61.5 MB in the beginning and 67.2 MB in the end (delta: -5.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:01,746 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.60 ms. Allocated memory is still 111.1 MB. Free memory was 67.2 MB in the beginning and 65.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:01,747 INFO L168 Benchmark]: Boogie Preprocessor took 31.76 ms. Allocated memory is still 111.1 MB. Free memory was 65.2 MB in the beginning and 64.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:56:01,747 INFO L168 Benchmark]: RCFGBuilder took 560.65 ms. Allocated memory is still 111.1 MB. Free memory was 64.0 MB in the beginning and 76.0 MB in the end (delta: -12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:01,748 INFO L168 Benchmark]: TraceAbstraction took 3632.01 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 75.5 MB in the beginning and 67.6 MB in the end (delta: 7.9 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:01,748 INFO L168 Benchmark]: Witness Printer took 62.45 ms. Allocated memory is still 134.2 MB. Free memory was 67.6 MB in the beginning and 65.5 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:56:01,751 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 50.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 585.51 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 61.5 MB in the beginning and 67.2 MB in the end (delta: -5.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.60 ms. Allocated memory is still 111.1 MB. Free memory was 67.2 MB in the beginning and 65.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.76 ms. Allocated memory is still 111.1 MB. Free memory was 65.2 MB in the beginning and 64.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 560.65 ms. Allocated memory is still 111.1 MB. Free memory was 64.0 MB in the beginning and 76.0 MB in the end (delta: -12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3632.01 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 75.5 MB in the beginning and 67.6 MB in the end (delta: 7.9 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. * Witness Printer took 62.45 ms. Allocated memory is still 134.2 MB. Free memory was 67.6 MB in the beginning and 65.5 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 525 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 5 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 36 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 1418 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, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 71 SDtfs, 48 SDslu, 99 SDs, 0 SdLazy, 50 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1126 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...