./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_tso.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_4d1313af-609d-45f5-af09-6efdeeb6853f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4d1313af-609d-45f5-af09-6efdeeb6853f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4d1313af-609d-45f5-af09-6efdeeb6853f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4d1313af-609d-45f5-af09-6efdeeb6853f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4d1313af-609d-45f5-af09-6efdeeb6853f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4d1313af-609d-45f5-af09-6efdeeb6853f/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 586443bdba3a0440a46012510813ca1b149248c0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 23:57:45,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:57:45,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:57:45,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:57:45,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:57:45,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:57:45,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:57:45,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:57:45,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:57:45,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:57:45,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:57:45,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:57:45,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:57:45,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:57:45,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:57:45,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:57:45,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:57:45,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:57:45,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:57:45,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:57:45,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:57:45,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:57:45,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:57:45,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:57:45,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:57:45,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:57:45,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:57:45,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:57:45,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:57:45,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:57:45,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:57:45,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:57:45,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:57:45,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:57:45,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:57:45,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:57:45,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:57:45,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:57:45,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:57:45,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:57:45,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:57:45,479 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4d1313af-609d-45f5-af09-6efdeeb6853f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:57:45,525 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:57:45,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:57:45,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:57:45,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:57:45,529 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:57:45,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:57:45,530 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:57:45,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:57:45,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:57:45,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:57:45,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:57:45,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:57:45,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:57:45,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:57:45,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:57:45,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:57:45,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:57:45,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:57:45,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:57:45,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:57:45,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:57:45,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:57:45,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:57:45,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:57:45,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:57:45,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:57:45,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:57:45,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:57:45,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:57:45,540 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_4d1313af-609d-45f5-af09-6efdeeb6853f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4d1313af-609d-45f5-af09-6efdeeb6853f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586443bdba3a0440a46012510813ca1b149248c0 [2020-11-29 23:57:45,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:57:45,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:57:45,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:57:45,947 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:57:45,951 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:57:45,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4d1313af-609d-45f5-af09-6efdeeb6853f/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i [2020-11-29 23:57:46,034 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d1313af-609d-45f5-af09-6efdeeb6853f/bin/uautomizer/data/4675a52ff/d70118c08f004685a67322c42b679b84/FLAG9abcedc84 [2020-11-29 23:57:46,732 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:57:46,733 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4d1313af-609d-45f5-af09-6efdeeb6853f/sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i [2020-11-29 23:57:46,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d1313af-609d-45f5-af09-6efdeeb6853f/bin/uautomizer/data/4675a52ff/d70118c08f004685a67322c42b679b84/FLAG9abcedc84 [2020-11-29 23:57:46,961 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4d1313af-609d-45f5-af09-6efdeeb6853f/bin/uautomizer/data/4675a52ff/d70118c08f004685a67322c42b679b84 [2020-11-29 23:57:46,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:57:46,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:57:46,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:57:46,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:57:47,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:57:47,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:57:46" (1/1) ... [2020-11-29 23:57:47,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606895b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:47, skipping insertion in model container [2020-11-29 23:57:47,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:57:46" (1/1) ... [2020-11-29 23:57:47,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:57:47,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:57:47,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:57:47,531 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:57:47,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:57:47,671 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:57:47,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:47 WrapperNode [2020-11-29 23:57:47,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:57:47,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:57:47,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:57:47,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:57:47,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:47" (1/1) ... [2020-11-29 23:57:47,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:47" (1/1) ... [2020-11-29 23:57:47,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:57:47,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:57:47,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:57:47,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:57:47,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:47" (1/1) ... [2020-11-29 23:57:47,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:47" (1/1) ... [2020-11-29 23:57:47,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:47" (1/1) ... [2020-11-29 23:57:47,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:47" (1/1) ... [2020-11-29 23:57:47,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:47" (1/1) ... [2020-11-29 23:57:47,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:47" (1/1) ... [2020-11-29 23:57:47,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:47" (1/1) ... [2020-11-29 23:57:47,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:57:47,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:57:47,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:57:47,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:57:47,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d1313af-609d-45f5-af09-6efdeeb6853f/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 23:57:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:57:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 23:57:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:57:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:57:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 23:57:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 23:57:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 23:57:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 23:57:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-29 23:57:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-29 23:57:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-11-29 23:57:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-11-29 23:57:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:57:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 23:57:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:57:47,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:57:47,864 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 23:57:48,649 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:57:48,649 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 23:57:48,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:48 BoogieIcfgContainer [2020-11-29 23:57:48,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:57:48,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:57:48,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:57:48,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:57:48,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:57:46" (1/3) ... [2020-11-29 23:57:48,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d4f3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:57:48, skipping insertion in model container [2020-11-29 23:57:48,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:47" (2/3) ... [2020-11-29 23:57:48,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d4f3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:57:48, skipping insertion in model container [2020-11-29 23:57:48,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:48" (3/3) ... [2020-11-29 23:57:48,664 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2020-11-29 23:57:48,679 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 23:57:48,680 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:57:48,685 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:57:48,686 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 23:57:48,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,737 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,737 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,738 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,738 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,741 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,741 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,742 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,742 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,743 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,743 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,743 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,743 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,745 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,745 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,745 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,746 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,746 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,746 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,748 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,755 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,756 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,756 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,756 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,765 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,766 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,766 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,766 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,774 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,774 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,774 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,775 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,779 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,780 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,780 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,780 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:57:48,784 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 23:57:48,798 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-29 23:57:48,836 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:57:48,836 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:57:48,837 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:57:48,837 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:57:48,837 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:57:48,837 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:57:48,837 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:57:48,838 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:57:48,860 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 23:57:48,862 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 95 transitions, 210 flow [2020-11-29 23:57:48,866 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 95 transitions, 210 flow [2020-11-29 23:57:48,868 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 105 places, 95 transitions, 210 flow [2020-11-29 23:57:48,976 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2020-11-29 23:57:48,976 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 23:57:48,983 INFO L80 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2020-11-29 23:57:48,992 INFO L116 LiptonReduction]: Number of co-enabled transitions 2256 [2020-11-29 23:57:51,596 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-11-29 23:57:51,776 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-11-29 23:57:52,326 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-11-29 23:57:52,487 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-11-29 23:57:52,569 INFO L131 LiptonReduction]: Checked pairs total: 4418 [2020-11-29 23:57:52,570 INFO L133 LiptonReduction]: Total number of compositions: 80 [2020-11-29 23:57:52,575 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-11-29 23:57:52,685 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-11-29 23:57:52,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-11-29 23:57:52,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:57:52,699 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:52,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:52,700 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:52,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:52,707 INFO L82 PathProgramCache]: Analyzing trace with hash 481695671, now seen corresponding path program 1 times [2020-11-29 23:57:52,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:52,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679806601] [2020-11-29 23:57:52,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:53,030 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 23:57:53,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679806601] [2020-11-29 23:57:53,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:53,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:57:53,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44399403] [2020-11-29 23:57:53,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:57:53,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:53,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:57:53,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:57:53,054 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-11-29 23:57:53,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:53,143 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-11-29 23:57:53,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:57:53,147 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 23:57:53,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:53,205 INFO L225 Difference]: With dead ends: 1450 [2020-11-29 23:57:53,207 INFO L226 Difference]: Without dead ends: 1194 [2020-11-29 23:57:53,208 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 23:57:53,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-11-29 23:57:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-11-29 23:57:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-11-29 23:57:53,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-11-29 23:57:53,387 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-11-29 23:57:53,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:53,388 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-11-29 23:57:53,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:57:53,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-11-29 23:57:53,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:57:53,392 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:53,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:53,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:57:53,393 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:53,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:53,394 INFO L82 PathProgramCache]: Analyzing trace with hash 2047662136, now seen corresponding path program 1 times [2020-11-29 23:57:53,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:53,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281491106] [2020-11-29 23:57:53,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:53,527 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 23:57:53,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281491106] [2020-11-29 23:57:53,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:53,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:57:53,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364990124] [2020-11-29 23:57:53,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:57:53,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:53,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:57:53,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:57:53,531 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-11-29 23:57:53,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:53,603 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-11-29 23:57:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:57:53,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 23:57:53,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:53,627 INFO L225 Difference]: With dead ends: 1322 [2020-11-29 23:57:53,627 INFO L226 Difference]: Without dead ends: 1066 [2020-11-29 23:57:53,627 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 [2020-11-29 23:57:53,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-11-29 23:57:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-11-29 23:57:53,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-11-29 23:57:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-11-29 23:57:53,693 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-11-29 23:57:53,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:53,693 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-11-29 23:57:53,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:57:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-11-29 23:57:53,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:57:53,701 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:53,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:53,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:57:53,702 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:53,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:53,714 INFO L82 PathProgramCache]: Analyzing trace with hash -947021519, now seen corresponding path program 1 times [2020-11-29 23:57:53,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:53,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123587666] [2020-11-29 23:57:53,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:53,839 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 23:57:53,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123587666] [2020-11-29 23:57:53,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:53,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:57:53,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290770114] [2020-11-29 23:57:53,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:57:53,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:53,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:57:53,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:57:53,872 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-11-29 23:57:53,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:53,931 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-11-29 23:57:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:57:53,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 23:57:53,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:53,947 INFO L225 Difference]: With dead ends: 1162 [2020-11-29 23:57:53,947 INFO L226 Difference]: Without dead ends: 970 [2020-11-29 23:57:53,947 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 [2020-11-29 23:57:53,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-11-29 23:57:53,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-11-29 23:57:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-11-29 23:57:54,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-11-29 23:57:54,004 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-11-29 23:57:54,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:54,004 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-11-29 23:57:54,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:57:54,005 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-11-29 23:57:54,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:57:54,007 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:54,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:54,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:57:54,008 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:54,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:54,010 INFO L82 PathProgramCache]: Analyzing trace with hash 639493830, now seen corresponding path program 1 times [2020-11-29 23:57:54,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:54,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961367540] [2020-11-29 23:57:54,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:54,122 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 23:57:54,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961367540] [2020-11-29 23:57:54,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:54,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:57:54,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989140449] [2020-11-29 23:57:54,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:57:54,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:54,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:57:54,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:57:54,125 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 5 states. [2020-11-29 23:57:54,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:54,186 INFO L93 Difference]: Finished difference Result 1162 states and 3980 transitions. [2020-11-29 23:57:54,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:57:54,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-29 23:57:54,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:54,192 INFO L225 Difference]: With dead ends: 1162 [2020-11-29 23:57:54,192 INFO L226 Difference]: Without dead ends: 508 [2020-11-29 23:57:54,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:57:54,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-11-29 23:57:54,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2020-11-29 23:57:54,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-11-29 23:57:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1638 transitions. [2020-11-29 23:57:54,215 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1638 transitions. Word has length 13 [2020-11-29 23:57:54,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:54,216 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 1638 transitions. [2020-11-29 23:57:54,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:57:54,216 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1638 transitions. [2020-11-29 23:57:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:57:54,217 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:54,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:54,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 23:57:54,218 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:54,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:54,219 INFO L82 PathProgramCache]: Analyzing trace with hash 380154805, now seen corresponding path program 1 times [2020-11-29 23:57:54,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:54,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826398360] [2020-11-29 23:57:54,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:54,264 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 23:57:54,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826398360] [2020-11-29 23:57:54,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:54,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:57:54,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747662917] [2020-11-29 23:57:54,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:57:54,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:54,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:57:54,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:57:54,267 INFO L87 Difference]: Start difference. First operand 508 states and 1638 transitions. Second operand 4 states. [2020-11-29 23:57:54,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:54,288 INFO L93 Difference]: Finished difference Result 544 states and 1704 transitions. [2020-11-29 23:57:54,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:57:54,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-29 23:57:54,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:54,294 INFO L225 Difference]: With dead ends: 544 [2020-11-29 23:57:54,294 INFO L226 Difference]: Without dead ends: 472 [2020-11-29 23:57:54,295 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 [2020-11-29 23:57:54,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-11-29 23:57:54,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-11-29 23:57:54,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-11-29 23:57:54,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-11-29 23:57:54,315 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 15 [2020-11-29 23:57:54,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:54,315 INFO L481 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-11-29 23:57:54,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:57:54,316 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-11-29 23:57:54,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 23:57:54,317 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:54,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:54,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 23:57:54,318 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:54,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:54,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2067323682, now seen corresponding path program 1 times [2020-11-29 23:57:54,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:54,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338606704] [2020-11-29 23:57:54,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:57:54,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338606704] [2020-11-29 23:57:54,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:54,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:57:54,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340990007] [2020-11-29 23:57:54,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:57:54,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:54,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:57:54,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:57:54,417 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 5 states. [2020-11-29 23:57:54,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:54,469 INFO L93 Difference]: Finished difference Result 586 states and 1831 transitions. [2020-11-29 23:57:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:57:54,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 23:57:54,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:54,473 INFO L225 Difference]: With dead ends: 586 [2020-11-29 23:57:54,473 INFO L226 Difference]: Without dead ends: 262 [2020-11-29 23:57:54,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:57:54,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-11-29 23:57:54,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-11-29 23:57:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-11-29 23:57:54,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 768 transitions. [2020-11-29 23:57:54,486 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 768 transitions. Word has length 16 [2020-11-29 23:57:54,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:54,486 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 768 transitions. [2020-11-29 23:57:54,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:57:54,486 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 768 transitions. [2020-11-29 23:57:54,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 23:57:54,487 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:54,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:54,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 23:57:54,488 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:54,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:54,488 INFO L82 PathProgramCache]: Analyzing trace with hash 253681578, now seen corresponding path program 1 times [2020-11-29 23:57:54,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:54,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396833326] [2020-11-29 23:57:54,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:54,568 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 23:57:54,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396833326] [2020-11-29 23:57:54,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:54,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:57:54,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629942715] [2020-11-29 23:57:54,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:57:54,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:54,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:57:54,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:57:54,570 INFO L87 Difference]: Start difference. First operand 262 states and 768 transitions. Second operand 5 states. [2020-11-29 23:57:54,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:54,618 INFO L93 Difference]: Finished difference Result 358 states and 1024 transitions. [2020-11-29 23:57:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:57:54,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-29 23:57:54,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:54,620 INFO L225 Difference]: With dead ends: 358 [2020-11-29 23:57:54,620 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 23:57:54,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:57:54,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 23:57:54,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-11-29 23:57:54,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-11-29 23:57:54,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-11-29 23:57:54,629 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-11-29 23:57:54,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:54,630 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-11-29 23:57:54,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:57:54,630 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-11-29 23:57:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 23:57:54,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:54,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:54,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 23:57:54,631 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:54,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:54,632 INFO L82 PathProgramCache]: Analyzing trace with hash -2117772472, now seen corresponding path program 1 times [2020-11-29 23:57:54,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:54,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078455147] [2020-11-29 23:57:54,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:54,716 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 23:57:54,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078455147] [2020-11-29 23:57:54,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:54,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:57:54,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169144183] [2020-11-29 23:57:54,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:57:54,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:54,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:57:54,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:57:54,718 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 5 states. [2020-11-29 23:57:54,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:54,768 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-11-29 23:57:54,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:57:54,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 23:57:54,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:54,770 INFO L225 Difference]: With dead ends: 130 [2020-11-29 23:57:54,770 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:57:54,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:57:54,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:57:54,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:57:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:57:54,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:57:54,771 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-29 23:57:54,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:54,772 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:57:54,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:57:54,772 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:57:54,772 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:57:54,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 23:57:54,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:57:54 BasicIcfg [2020-11-29 23:57:54,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:57:54,776 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:57:54,776 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:57:54,776 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:57:54,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:48" (3/4) ... [2020-11-29 23:57:54,788 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:57:54,794 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 23:57:54,795 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 23:57:54,795 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-29 23:57:54,795 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-11-29 23:57:54,802 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-11-29 23:57:54,802 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 23:57:54,803 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:57:54,803 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:57:54,868 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4d1313af-609d-45f5-af09-6efdeeb6853f/bin/uautomizer/witness.graphml [2020-11-29 23:57:54,869 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:57:54,876 INFO L168 Benchmark]: Toolchain (without parser) took 7882.34 ms. Allocated memory was 88.1 MB in the beginning and 169.9 MB in the end (delta: 81.8 MB). Free memory was 68.8 MB in the beginning and 89.3 MB in the end (delta: -20.6 MB). Peak memory consumption was 59.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:54,876 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 50.9 MB in the beginning and 50.9 MB in the end (delta: 77.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:57:54,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.11 ms. Allocated memory is still 88.1 MB. Free memory was 68.5 MB in the beginning and 44.5 MB in the end (delta: 24.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:54,877 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.49 ms. Allocated memory is still 88.1 MB. Free memory was 44.5 MB in the beginning and 42.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:54,878 INFO L168 Benchmark]: Boogie Preprocessor took 34.72 ms. Allocated memory is still 88.1 MB. Free memory was 42.4 MB in the beginning and 41.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:54,878 INFO L168 Benchmark]: RCFGBuilder took 891.87 ms. Allocated memory is still 88.1 MB. Free memory was 41.0 MB in the beginning and 46.7 MB in the end (delta: -5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:54,879 INFO L168 Benchmark]: TraceAbstraction took 6119.77 ms. Allocated memory was 88.1 MB in the beginning and 169.9 MB in the end (delta: 81.8 MB). Free memory was 46.3 MB in the beginning and 92.4 MB in the end (delta: -46.2 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:54,879 INFO L168 Benchmark]: Witness Printer took 98.47 ms. Allocated memory is still 169.9 MB. Free memory was 92.4 MB in the beginning and 89.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:54,882 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 50.9 MB in the beginning and 50.9 MB in the end (delta: 77.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 675.11 ms. Allocated memory is still 88.1 MB. Free memory was 68.5 MB in the beginning and 44.5 MB in the end (delta: 24.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.49 ms. Allocated memory is still 88.1 MB. Free memory was 44.5 MB in the beginning and 42.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.72 ms. Allocated memory is still 88.1 MB. Free memory was 42.4 MB in the beginning and 41.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 891.87 ms. Allocated memory is still 88.1 MB. Free memory was 41.0 MB in the beginning and 46.7 MB in the end (delta: -5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6119.77 ms. Allocated memory was 88.1 MB in the beginning and 169.9 MB in the end (delta: 81.8 MB). Free memory was 46.3 MB in the beginning and 92.4 MB in the end (delta: -46.2 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.1 GB. * Witness Printer took 98.47 ms. Allocated memory is still 169.9 MB. Free memory was 92.4 MB in the beginning and 89.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1644 VarBasedMoverChecksPositive, 61 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 49 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 172 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.7s, 105 PlacesBefore, 41 PlacesAfterwards, 95 TransitionsBefore, 29 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 80 TotalNumberOfCompositions, 4418 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 5 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 232 SDtfs, 257 SDslu, 326 SDs, 0 SdLazy, 57 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4169 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...