./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe020_pso.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_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/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 fa9cb0a5c73e7f443c838278ff3fbfd19a52f78d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:05:14,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:05:14,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:05:14,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:05:14,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:05:14,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:05:14,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:05:14,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:05:14,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:05:14,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:05:14,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:05:14,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:05:14,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:05:14,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:05:14,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:05:14,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:05:14,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:05:14,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:05:14,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:05:14,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:05:14,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:05:14,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:05:14,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:05:14,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:05:14,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:05:14,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:05:14,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:05:14,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:05:14,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:05:14,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:05:14,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:05:14,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:05:14,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:05:14,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:05:14,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:05:14,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:05:14,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:05:14,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:05:14,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:05:14,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:05:14,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:05:14,416 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:05:14,452 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:05:14,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:05:14,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:05:14,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:05:14,455 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:05:14,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:05:14,456 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:05:14,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:05:14,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:05:14,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:05:14,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:05:14,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:05:14,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:05:14,458 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:05:14,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:05:14,459 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:05:14,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:05:14,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:05:14,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:05:14,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:05:14,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:05:14,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:05:14,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:05:14,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:05:14,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:05:14,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:05:14,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:05:14,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:05:14,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:05:14,462 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_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa9cb0a5c73e7f443c838278ff3fbfd19a52f78d [2020-11-30 00:05:14,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:05:14,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:05:14,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:05:14,820 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:05:14,825 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:05:14,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i [2020-11-30 00:05:14,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/bin/uautomizer/data/18332168b/205fe9887ff24f3eada192dffd652d92/FLAGe2bd6f796 [2020-11-30 00:05:15,498 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:05:15,499 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i [2020-11-30 00:05:15,523 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/bin/uautomizer/data/18332168b/205fe9887ff24f3eada192dffd652d92/FLAGe2bd6f796 [2020-11-30 00:05:15,781 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/bin/uautomizer/data/18332168b/205fe9887ff24f3eada192dffd652d92 [2020-11-30 00:05:15,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:05:15,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:05:15,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:05:15,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:05:15,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:05:15,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:05:15" (1/1) ... [2020-11-30 00:05:15,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10300af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:15, skipping insertion in model container [2020-11-30 00:05:15,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:05:15" (1/1) ... [2020-11-30 00:05:15,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:05:15,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:05:16,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:05:16,307 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:05:16,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:05:16,489 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:05:16,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:16 WrapperNode [2020-11-30 00:05:16,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:05:16,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:05:16,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:05:16,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:05:16,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:16" (1/1) ... [2020-11-30 00:05:16,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:16" (1/1) ... [2020-11-30 00:05:16,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:05:16,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:05:16,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:05:16,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:05:16,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:16" (1/1) ... [2020-11-30 00:05:16,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:16" (1/1) ... [2020-11-30 00:05:16,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:16" (1/1) ... [2020-11-30 00:05:16,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:16" (1/1) ... [2020-11-30 00:05:16,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:16" (1/1) ... [2020-11-30 00:05:16,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:16" (1/1) ... [2020-11-30 00:05:16,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:16" (1/1) ... [2020-11-30 00:05:16,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:05:16,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:05:16,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:05:16,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:05:16,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/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 [2020-11-30 00:05:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:05:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-30 00:05:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:05:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:05:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-30 00:05:16,648 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-30 00:05:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-30 00:05:16,648 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-30 00:05:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-30 00:05:16,651 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-30 00:05:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:05:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-30 00:05:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:05:16,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:05:16,653 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-30 00:05:17,049 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:05:17,050 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-30 00:05:17,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:05:17 BoogieIcfgContainer [2020-11-30 00:05:17,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:05:17,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:05:17,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:05:17,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:05:17,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:05:15" (1/3) ... [2020-11-30 00:05:17,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75646188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:05:17, skipping insertion in model container [2020-11-30 00:05:17,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:16" (2/3) ... [2020-11-30 00:05:17,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75646188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:05:17, skipping insertion in model container [2020-11-30 00:05:17,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:05:17" (3/3) ... [2020-11-30 00:05:17,066 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2020-11-30 00:05:17,077 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-30 00:05:17,078 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:05:17,085 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:05:17,086 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-30 00:05:17,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,126 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,126 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,126 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,126 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,127 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,127 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,127 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,129 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,129 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,131 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,131 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,132 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,132 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,136 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,137 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,137 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,137 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,142 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,142 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,142 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,143 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:05:17,144 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-30 00:05:17,154 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 00:05:17,188 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:05:17,188 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:05:17,189 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:05:17,189 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:05:17,189 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:05:17,189 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:05:17,189 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:05:17,189 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:05:17,201 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-30 00:05:17,203 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-30 00:05:17,206 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-30 00:05:17,208 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-11-30 00:05:17,258 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-11-30 00:05:17,258 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-30 00:05:17,262 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-30 00:05:17,265 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-30 00:05:19,080 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-11-30 00:05:19,284 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-11-30 00:05:19,646 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-11-30 00:05:20,063 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-30 00:05:20,078 INFO L131 LiptonReduction]: Checked pairs total: 3056 [2020-11-30 00:05:20,079 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-11-30 00:05:20,084 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 21 transitions, 57 flow [2020-11-30 00:05:20,105 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-11-30 00:05:20,107 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-11-30 00:05:20,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 00:05:20,114 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:20,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:20,115 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:20,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:20,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1972841711, now seen corresponding path program 1 times [2020-11-30 00:05:20,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:20,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247714469] [2020-11-30 00:05:20,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:20,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247714469] [2020-11-30 00:05:20,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:20,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 00:05:20,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121653786] [2020-11-30 00:05:20,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:20,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:20,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:20,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:20,344 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-11-30 00:05:20,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:20,414 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-11-30 00:05:20,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:20,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-30 00:05:20,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:20,433 INFO L225 Difference]: With dead ends: 220 [2020-11-30 00:05:20,433 INFO L226 Difference]: Without dead ends: 172 [2020-11-30 00:05:20,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:20,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-11-30 00:05:20,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-11-30 00:05:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-30 00:05:20,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-11-30 00:05:20,515 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-11-30 00:05:20,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:20,521 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-11-30 00:05:20,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:20,525 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-11-30 00:05:20,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:05:20,531 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:20,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:20,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:05:20,532 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:20,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:20,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1028549814, now seen corresponding path program 1 times [2020-11-30 00:05:20,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:20,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26359294] [2020-11-30 00:05:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:20,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26359294] [2020-11-30 00:05:20,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:20,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 00:05:20,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098036112] [2020-11-30 00:05:20,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:20,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:20,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:20,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:20,661 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-11-30 00:05:20,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:20,675 INFO L93 Difference]: Finished difference Result 163 states and 430 transitions. [2020-11-30 00:05:20,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:20,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-30 00:05:20,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:20,680 INFO L225 Difference]: With dead ends: 163 [2020-11-30 00:05:20,680 INFO L226 Difference]: Without dead ends: 163 [2020-11-30 00:05:20,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:20,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-30 00:05:20,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-30 00:05:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-30 00:05:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 430 transitions. [2020-11-30 00:05:20,697 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 430 transitions. Word has length 9 [2020-11-30 00:05:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:20,698 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 430 transitions. [2020-11-30 00:05:20,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 430 transitions. [2020-11-30 00:05:20,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:05:20,699 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:20,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:20,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:05:20,700 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:20,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:20,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1819291053, now seen corresponding path program 1 times [2020-11-30 00:05:20,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:20,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808669390] [2020-11-30 00:05:20,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:20,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808669390] [2020-11-30 00:05:20,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:20,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:05:20,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227179800] [2020-11-30 00:05:20,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:20,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:20,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:20,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:20,761 INFO L87 Difference]: Start difference. First operand 163 states and 430 transitions. Second operand 3 states. [2020-11-30 00:05:20,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:20,773 INFO L93 Difference]: Finished difference Result 211 states and 528 transitions. [2020-11-30 00:05:20,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:20,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-30 00:05:20,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:20,776 INFO L225 Difference]: With dead ends: 211 [2020-11-30 00:05:20,776 INFO L226 Difference]: Without dead ends: 175 [2020-11-30 00:05:20,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:20,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-30 00:05:20,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 157. [2020-11-30 00:05:20,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-30 00:05:20,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 393 transitions. [2020-11-30 00:05:20,793 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 393 transitions. Word has length 10 [2020-11-30 00:05:20,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:20,794 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 393 transitions. [2020-11-30 00:05:20,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:20,794 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 393 transitions. [2020-11-30 00:05:20,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:05:20,795 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:20,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:20,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:05:20,796 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:20,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:20,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1819353363, now seen corresponding path program 1 times [2020-11-30 00:05:20,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:20,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037356758] [2020-11-30 00:05:20,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:20,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037356758] [2020-11-30 00:05:20,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:20,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:05:20,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72757483] [2020-11-30 00:05:20,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:05:20,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:20,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:05:20,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:05:20,867 INFO L87 Difference]: Start difference. First operand 157 states and 393 transitions. Second operand 4 states. [2020-11-30 00:05:20,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:20,914 INFO L93 Difference]: Finished difference Result 196 states and 467 transitions. [2020-11-30 00:05:20,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:05:20,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-30 00:05:20,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:20,919 INFO L225 Difference]: With dead ends: 196 [2020-11-30 00:05:20,919 INFO L226 Difference]: Without dead ends: 124 [2020-11-30 00:05:20,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:05:20,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-30 00:05:20,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-11-30 00:05:20,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-30 00:05:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 291 transitions. [2020-11-30 00:05:20,931 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 291 transitions. Word has length 10 [2020-11-30 00:05:20,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:20,931 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 291 transitions. [2020-11-30 00:05:20,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:05:20,932 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 291 transitions. [2020-11-30 00:05:20,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:05:20,933 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:20,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:20,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:05:20,933 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:20,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:20,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1404816041, now seen corresponding path program 1 times [2020-11-30 00:05:20,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:20,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513506815] [2020-11-30 00:05:20,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:21,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513506815] [2020-11-30 00:05:21,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:21,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:05:21,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090053053] [2020-11-30 00:05:21,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:05:21,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:21,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:05:21,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:05:21,064 INFO L87 Difference]: Start difference. First operand 124 states and 291 transitions. Second operand 4 states. [2020-11-30 00:05:21,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:21,145 INFO L93 Difference]: Finished difference Result 144 states and 309 transitions. [2020-11-30 00:05:21,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:05:21,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 00:05:21,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:21,149 INFO L225 Difference]: With dead ends: 144 [2020-11-30 00:05:21,149 INFO L226 Difference]: Without dead ends: 108 [2020-11-30 00:05:21,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:05:21,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-30 00:05:21,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-11-30 00:05:21,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-30 00:05:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 232 transitions. [2020-11-30 00:05:21,161 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 232 transitions. Word has length 11 [2020-11-30 00:05:21,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:21,161 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 232 transitions. [2020-11-30 00:05:21,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:05:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 232 transitions. [2020-11-30 00:05:21,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:05:21,163 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:21,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:21,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:05:21,164 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:21,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:21,164 INFO L82 PathProgramCache]: Analyzing trace with hash 693308811, now seen corresponding path program 1 times [2020-11-30 00:05:21,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:21,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945234556] [2020-11-30 00:05:21,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:21,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945234556] [2020-11-30 00:05:21,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:21,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:21,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975514565] [2020-11-30 00:05:21,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:05:21,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:21,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:05:21,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:05:21,279 INFO L87 Difference]: Start difference. First operand 108 states and 232 transitions. Second operand 5 states. [2020-11-30 00:05:21,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:21,334 INFO L93 Difference]: Finished difference Result 108 states and 214 transitions. [2020-11-30 00:05:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:05:21,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 00:05:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:21,336 INFO L225 Difference]: With dead ends: 108 [2020-11-30 00:05:21,336 INFO L226 Difference]: Without dead ends: 84 [2020-11-30 00:05:21,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:05:21,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-30 00:05:21,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-11-30 00:05:21,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-30 00:05:21,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 164 transitions. [2020-11-30 00:05:21,342 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 164 transitions. Word has length 12 [2020-11-30 00:05:21,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:21,342 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 164 transitions. [2020-11-30 00:05:21,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:05:21,342 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 164 transitions. [2020-11-30 00:05:21,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:05:21,344 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:21,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:21,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:05:21,344 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:21,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:21,345 INFO L82 PathProgramCache]: Analyzing trace with hash 489181955, now seen corresponding path program 1 times [2020-11-30 00:05:21,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:21,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197063584] [2020-11-30 00:05:21,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:21,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197063584] [2020-11-30 00:05:21,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:21,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:05:21,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898032380] [2020-11-30 00:05:21,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:05:21,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:21,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:05:21,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:05:21,422 INFO L87 Difference]: Start difference. First operand 84 states and 164 transitions. Second operand 6 states. [2020-11-30 00:05:21,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:21,481 INFO L93 Difference]: Finished difference Result 80 states and 154 transitions. [2020-11-30 00:05:21,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:05:21,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-30 00:05:21,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:21,482 INFO L225 Difference]: With dead ends: 80 [2020-11-30 00:05:21,482 INFO L226 Difference]: Without dead ends: 33 [2020-11-30 00:05:21,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:05:21,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-30 00:05:21,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-30 00:05:21,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-30 00:05:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-11-30 00:05:21,485 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-11-30 00:05:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:21,485 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-11-30 00:05:21,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:05:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-11-30 00:05:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:05:21,486 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:21,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:21,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:05:21,486 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:21,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:21,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1917932335, now seen corresponding path program 1 times [2020-11-30 00:05:21,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:21,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143041157] [2020-11-30 00:05:21,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:21,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143041157] [2020-11-30 00:05:21,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:21,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:21,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174970960] [2020-11-30 00:05:21,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:05:21,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:21,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:05:21,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:05:21,526 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-11-30 00:05:21,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:21,541 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-11-30 00:05:21,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:05:21,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-30 00:05:21,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:21,542 INFO L225 Difference]: With dead ends: 32 [2020-11-30 00:05:21,542 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:05:21,542 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 [2020-11-30 00:05:21,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:05:21,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:05:21,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:05:21,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:05:21,543 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-30 00:05:21,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:21,543 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:05:21,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:05:21,544 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:05:21,544 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:05:21,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:05:21,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:05:21 BasicIcfg [2020-11-30 00:05:21,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:05:21,548 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:05:21,548 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:05:21,548 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:05:21,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:05:17" (3/4) ... [2020-11-30 00:05:21,551 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:05:21,558 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-30 00:05:21,559 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-30 00:05:21,559 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-30 00:05:21,564 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-30 00:05:21,564 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:05:21,564 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:05:21,564 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:05:21,615 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_673f8322-3111-4d3f-aaa2-75d4c5d1d75f/bin/uautomizer/witness.graphml [2020-11-30 00:05:21,616 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:05:21,617 INFO L168 Benchmark]: Toolchain (without parser) took 5830.93 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 69.6 MB in the beginning and 70.6 MB in the end (delta: -1.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:05:21,618 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 111.1 MB. Free memory is still 87.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:05:21,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.04 ms. Allocated memory is still 111.1 MB. Free memory was 69.4 MB in the beginning and 88.7 MB in the end (delta: -19.3 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:05:21,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.79 ms. Allocated memory is still 111.1 MB. Free memory was 88.7 MB in the beginning and 86.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:05:21,623 INFO L168 Benchmark]: Boogie Preprocessor took 25.06 ms. Allocated memory is still 111.1 MB. Free memory was 86.8 MB in the beginning and 85.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:05:21,624 INFO L168 Benchmark]: RCFGBuilder took 482.28 ms. Allocated memory is still 111.1 MB. Free memory was 85.4 MB in the beginning and 70.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:05:21,624 INFO L168 Benchmark]: TraceAbstraction took 4493.65 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 70.0 MB in the beginning and 73.8 MB in the end (delta: -3.8 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:05:21,625 INFO L168 Benchmark]: Witness Printer took 68.12 ms. Allocated memory is still 134.2 MB. Free memory was 73.8 MB in the beginning and 70.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:05:21,627 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 111.1 MB. Free memory is still 87.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 699.04 ms. Allocated memory is still 111.1 MB. Free memory was 69.4 MB in the beginning and 88.7 MB in the end (delta: -19.3 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.79 ms. Allocated memory is still 111.1 MB. Free memory was 88.7 MB in the beginning and 86.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.06 ms. Allocated memory is still 111.1 MB. Free memory was 86.8 MB in the beginning and 85.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 482.28 ms. Allocated memory is still 111.1 MB. Free memory was 85.4 MB in the beginning and 70.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4493.65 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 70.0 MB in the beginning and 73.8 MB in the end (delta: -3.8 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * Witness Printer took 68.12 ms. Allocated memory is still 134.2 MB. Free memory was 73.8 MB in the beginning and 70.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 936 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.8s, 84 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 21 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 3056 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 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 134 SDtfs, 110 SDslu, 162 SDs, 0 SdLazy, 101 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 2616 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...