./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe008_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_9cbe04a8-0818-4091-b9c5-d6252faba94a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9cbe04a8-0818-4091-b9c5-d6252faba94a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9cbe04a8-0818-4091-b9c5-d6252faba94a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9cbe04a8-0818-4091-b9c5-d6252faba94a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe008_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9cbe04a8-0818-4091-b9c5-d6252faba94a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9cbe04a8-0818-4091-b9c5-d6252faba94a/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 1b09bc20b1dcddf778a05367c48918c4fd5fbd1e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:05:52,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:05:52,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:05:52,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:05:52,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:05:52,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:05:52,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:05:52,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:05:52,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:05:52,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:05:52,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:05:52,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:05:52,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:05:52,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:05:52,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:05:52,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:05:52,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:05:52,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:05:52,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:05:52,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:05:52,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:05:52,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:05:52,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:05:52,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:05:52,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:05:52,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:05:52,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:05:52,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:05:52,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:05:52,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:05:52,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:05:52,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:05:52,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:05:52,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:05:52,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:05:52,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:05:52,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:05:52,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:05:52,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:05:52,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:05:52,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:05:52,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9cbe04a8-0818-4091-b9c5-d6252faba94a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:05:52,628 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:05:52,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:05:52,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:05:52,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:05:52,633 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:05:52,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:05:52,634 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:05:52,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:05:52,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:05:52,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:05:52,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:05:52,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:05:52,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:05:52,636 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:05:52,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:05:52,637 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:05:52,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:05:52,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:05:52,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:05:52,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:05:52,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:05:52,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:05:52,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:05:52,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:05:52,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:05:52,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:05:52,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:05:52,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:05:52,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:05:52,656 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_9cbe04a8-0818-4091-b9c5-d6252faba94a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9cbe04a8-0818-4091-b9c5-d6252faba94a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b09bc20b1dcddf778a05367c48918c4fd5fbd1e [2020-11-28 03:05:52,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:05:52,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:05:53,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:05:53,002 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:05:53,003 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:05:53,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9cbe04a8-0818-4091-b9c5-d6252faba94a/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe008_tso.oepc.i [2020-11-28 03:05:53,080 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9cbe04a8-0818-4091-b9c5-d6252faba94a/bin/uautomizer/data/de5474abc/f5dec61efc834eafa5ab9a85ff1c7cdb/FLAG9bc376793 [2020-11-28 03:05:53,729 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:05:53,730 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9cbe04a8-0818-4091-b9c5-d6252faba94a/sv-benchmarks/c/pthread-wmm/safe008_tso.oepc.i [2020-11-28 03:05:53,751 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9cbe04a8-0818-4091-b9c5-d6252faba94a/bin/uautomizer/data/de5474abc/f5dec61efc834eafa5ab9a85ff1c7cdb/FLAG9bc376793 [2020-11-28 03:05:53,984 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9cbe04a8-0818-4091-b9c5-d6252faba94a/bin/uautomizer/data/de5474abc/f5dec61efc834eafa5ab9a85ff1c7cdb [2020-11-28 03:05:53,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:05:53,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:05:53,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:05:53,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:05:53,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:05:53,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:53" (1/1) ... [2020-11-28 03:05:53,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5f346d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:53, skipping insertion in model container [2020-11-28 03:05:53,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:53" (1/1) ... [2020-11-28 03:05:54,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:05:54,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:05:54,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:05:54,533 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:05:54,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:05:54,705 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:05:54,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:54 WrapperNode [2020-11-28 03:05:54,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:05:54,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:05:54,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:05:54,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:05:54,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:54" (1/1) ... [2020-11-28 03:05:54,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:54" (1/1) ... [2020-11-28 03:05:54,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:05:54,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:05:54,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:05:54,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:05:54,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:54" (1/1) ... [2020-11-28 03:05:54,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:54" (1/1) ... [2020-11-28 03:05:54,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:54" (1/1) ... [2020-11-28 03:05:54,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:54" (1/1) ... [2020-11-28 03:05:54,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:54" (1/1) ... [2020-11-28 03:05:54,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:54" (1/1) ... [2020-11-28 03:05:54,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:54" (1/1) ... [2020-11-28 03:05:54,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:05:54,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:05:54,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:05:54,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:05:54,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cbe04a8-0818-4091-b9c5-d6252faba94a/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 [2020-11-28 03:05:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:05:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 03:05:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:05:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:05:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 03:05:54,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 03:05:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 03:05:54,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 03:05:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 03:05:54,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 03:05:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:05:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 03:05:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:05:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:05:54,938 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 03:05:55,462 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:05:55,463 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 03:05:55,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:55 BoogieIcfgContainer [2020-11-28 03:05:55,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:05:55,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:05:55,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:05:55,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:05:55,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:05:53" (1/3) ... [2020-11-28 03:05:55,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65288e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:05:55, skipping insertion in model container [2020-11-28 03:05:55,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:54" (2/3) ... [2020-11-28 03:05:55,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65288e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:05:55, skipping insertion in model container [2020-11-28 03:05:55,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:55" (3/3) ... [2020-11-28 03:05:55,474 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2020-11-28 03:05:55,485 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 03:05:55,485 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:05:55,490 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:05:55,491 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 03:05:55,518 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,519 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,519 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,519 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,519 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,520 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,520 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,520 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,520 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,521 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,521 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,521 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,522 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,522 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,522 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,522 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,523 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,523 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,526 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,526 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,531 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,531 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,531 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,532 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,535 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,536 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,536 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,536 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:05:55,538 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 03:05:55,549 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:05:55,571 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:05:55,571 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:05:55,571 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:05:55,571 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:05:55,572 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:05:55,572 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:05:55,572 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:05:55,572 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:05:55,584 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 03:05:55,586 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:05:55,589 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:05:55,591 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-28 03:05:55,634 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-28 03:05:55,634 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 03:05:55,638 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 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. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-28 03:05:55,642 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 03:05:56,280 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-28 03:05:58,062 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-28 03:05:58,175 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-28 03:05:58,549 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-11-28 03:05:58,698 INFO L131 LiptonReduction]: Checked pairs total: 3181 [2020-11-28 03:05:58,698 INFO L133 LiptonReduction]: Total number of compositions: 74 [2020-11-28 03:05:58,719 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-28 03:05:58,758 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-28 03:05:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-28 03:05:58,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:05:58,767 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:58,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:58,768 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:58,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:58,774 INFO L82 PathProgramCache]: Analyzing trace with hash 2101373786, now seen corresponding path program 1 times [2020-11-28 03:05:58,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:58,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664756230] [2020-11-28 03:05:58,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:59,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664756230] [2020-11-28 03:05:59,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:59,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 03:05:59,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623512256] [2020-11-28 03:05:59,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:05:59,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:59,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:05:59,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:05:59,084 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-28 03:05:59,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:59,124 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-28 03:05:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:05:59,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 03:05:59,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:59,141 INFO L225 Difference]: With dead ends: 282 [2020-11-28 03:05:59,141 INFO L226 Difference]: Without dead ends: 218 [2020-11-28 03:05:59,142 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 [2020-11-28 03:05:59,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-28 03:05:59,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-28 03:05:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-28 03:05:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-28 03:05:59,213 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-28 03:05:59,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:59,214 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-28 03:05:59,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:05:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-28 03:05:59,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:05:59,216 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:59,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:59,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:05:59,216 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:59,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:59,217 INFO L82 PathProgramCache]: Analyzing trace with hash 718076695, now seen corresponding path program 1 times [2020-11-28 03:05:59,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:59,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918283302] [2020-11-28 03:05:59,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:59,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918283302] [2020-11-28 03:05:59,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:59,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:05:59,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047788480] [2020-11-28 03:05:59,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:05:59,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:59,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:05:59,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:05:59,289 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-11-28 03:05:59,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:59,332 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-11-28 03:05:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:05:59,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 03:05:59,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:59,335 INFO L225 Difference]: With dead ends: 242 [2020-11-28 03:05:59,335 INFO L226 Difference]: Without dead ends: 146 [2020-11-28 03:05:59,336 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 [2020-11-28 03:05:59,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-28 03:05:59,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-28 03:05:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-28 03:05:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-28 03:05:59,351 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-11-28 03:05:59,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:59,352 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-28 03:05:59,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:05:59,352 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-28 03:05:59,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:05:59,359 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:59,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:59,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:05:59,360 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:59,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:59,365 INFO L82 PathProgramCache]: Analyzing trace with hash -676988276, now seen corresponding path program 1 times [2020-11-28 03:05:59,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:59,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627659028] [2020-11-28 03:05:59,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:59,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627659028] [2020-11-28 03:05:59,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:59,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 03:05:59,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331778260] [2020-11-28 03:05:59,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:05:59,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:59,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:05:59,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:05:59,437 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-11-28 03:05:59,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:59,445 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-11-28 03:05:59,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:05:59,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-28 03:05:59,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:59,447 INFO L225 Difference]: With dead ends: 144 [2020-11-28 03:05:59,447 INFO L226 Difference]: Without dead ends: 144 [2020-11-28 03:05:59,448 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 [2020-11-28 03:05:59,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-28 03:05:59,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-28 03:05:59,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-28 03:05:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-11-28 03:05:59,468 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-11-28 03:05:59,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:59,468 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-11-28 03:05:59,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:05:59,469 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-11-28 03:05:59,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:05:59,470 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:59,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:59,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:05:59,470 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:59,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:59,471 INFO L82 PathProgramCache]: Analyzing trace with hash 799592622, now seen corresponding path program 1 times [2020-11-28 03:05:59,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:59,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530127047] [2020-11-28 03:05:59,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:59,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530127047] [2020-11-28 03:05:59,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:59,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:05:59,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306412908] [2020-11-28 03:05:59,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:05:59,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:59,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:05:59,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:05:59,558 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-11-28 03:05:59,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:59,614 INFO L93 Difference]: Finished difference Result 182 states and 430 transitions. [2020-11-28 03:05:59,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:05:59,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:05:59,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:59,617 INFO L225 Difference]: With dead ends: 182 [2020-11-28 03:05:59,618 INFO L226 Difference]: Without dead ends: 86 [2020-11-28 03:05:59,618 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 [2020-11-28 03:05:59,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-28 03:05:59,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-28 03:05:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-28 03:05:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-11-28 03:05:59,624 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 12 [2020-11-28 03:05:59,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:59,624 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-11-28 03:05:59,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:05:59,625 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-11-28 03:05:59,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:05:59,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:59,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:59,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:05:59,632 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:59,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:59,632 INFO L82 PathProgramCache]: Analyzing trace with hash -492629862, now seen corresponding path program 1 times [2020-11-28 03:05:59,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:59,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317685570] [2020-11-28 03:05:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:59,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317685570] [2020-11-28 03:05:59,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:59,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:05:59,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582429727] [2020-11-28 03:05:59,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:05:59,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:59,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:05:59,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:05:59,771 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 4 states. [2020-11-28 03:05:59,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:59,818 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-11-28 03:05:59,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:05:59,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 03:05:59,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:59,820 INFO L225 Difference]: With dead ends: 99 [2020-11-28 03:05:59,820 INFO L226 Difference]: Without dead ends: 77 [2020-11-28 03:05:59,821 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 [2020-11-28 03:05:59,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-28 03:05:59,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-11-28 03:05:59,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-28 03:05:59,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 156 transitions. [2020-11-28 03:05:59,833 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 156 transitions. Word has length 13 [2020-11-28 03:05:59,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:59,834 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 156 transitions. [2020-11-28 03:05:59,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:05:59,834 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 156 transitions. [2020-11-28 03:05:59,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:05:59,837 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:59,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:59,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:05:59,837 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:05:59,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:59,838 INFO L82 PathProgramCache]: Analyzing trace with hash 430385268, now seen corresponding path program 1 times [2020-11-28 03:05:59,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:59,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911646462] [2020-11-28 03:05:59,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:59,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911646462] [2020-11-28 03:05:59,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:59,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:05:59,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838211527] [2020-11-28 03:05:59,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:05:59,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:59,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:05:59,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:05:59,967 INFO L87 Difference]: Start difference. First operand 77 states and 156 transitions. Second operand 5 states. [2020-11-28 03:06:00,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:00,050 INFO L93 Difference]: Finished difference Result 78 states and 146 transitions. [2020-11-28 03:06:00,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:06:00,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-28 03:06:00,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:00,051 INFO L225 Difference]: With dead ends: 78 [2020-11-28 03:06:00,052 INFO L226 Difference]: Without dead ends: 63 [2020-11-28 03:06:00,052 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 [2020-11-28 03:06:00,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-28 03:06:00,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-28 03:06:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-28 03:06:00,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 116 transitions. [2020-11-28 03:06:00,056 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 116 transitions. Word has length 14 [2020-11-28 03:06:00,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:00,056 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 116 transitions. [2020-11-28 03:06:00,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:06:00,057 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 116 transitions. [2020-11-28 03:06:00,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:06:00,059 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:00,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:00,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:06:00,060 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:00,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:00,062 INFO L82 PathProgramCache]: Analyzing trace with hash 493445752, now seen corresponding path program 1 times [2020-11-28 03:06:00,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:00,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133907889] [2020-11-28 03:06:00,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:00,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133907889] [2020-11-28 03:06:00,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:00,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:06:00,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263080689] [2020-11-28 03:06:00,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:06:00,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:00,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:06:00,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:06:00,184 INFO L87 Difference]: Start difference. First operand 63 states and 116 transitions. Second operand 6 states. [2020-11-28 03:06:00,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:00,264 INFO L93 Difference]: Finished difference Result 60 states and 108 transitions. [2020-11-28 03:06:00,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:06:00,264 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-28 03:06:00,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:00,265 INFO L225 Difference]: With dead ends: 60 [2020-11-28 03:06:00,265 INFO L226 Difference]: Without dead ends: 54 [2020-11-28 03:06:00,265 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 [2020-11-28 03:06:00,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-28 03:06:00,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-28 03:06:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-28 03:06:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-11-28 03:06:00,269 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 15 [2020-11-28 03:06:00,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:00,269 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-11-28 03:06:00,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:06:00,269 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-11-28 03:06:00,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:06:00,270 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:00,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:00,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:06:00,271 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:00,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:00,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1724594669, now seen corresponding path program 1 times [2020-11-28 03:06:00,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:00,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361536406] [2020-11-28 03:06:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:00,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:00,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361536406] [2020-11-28 03:06:00,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:00,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:06:00,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524579496] [2020-11-28 03:06:00,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:06:00,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:00,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:06:00,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:06:00,335 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 3 states. [2020-11-28 03:06:00,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:00,342 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2020-11-28 03:06:00,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:06:00,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:06:00,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:00,342 INFO L225 Difference]: With dead ends: 53 [2020-11-28 03:06:00,343 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:06:00,343 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 [2020-11-28 03:06:00,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:06:00,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:06:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:06:00,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:06:00,344 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-28 03:06:00,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:00,344 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:06:00,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:06:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:06:00,344 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:06:00,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:06:00,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:06:00 BasicIcfg [2020-11-28 03:06:00,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:06:00,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:06:00,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:06:00,350 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:06:00,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:55" (3/4) ... [2020-11-28 03:06:00,353 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:06:00,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 03:06:00,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 03:06:00,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 03:06:00,364 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 03:06:00,364 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:06:00,364 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:06:00,364 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:06:00,405 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9cbe04a8-0818-4091-b9c5-d6252faba94a/bin/uautomizer/witness.graphml [2020-11-28 03:06:00,405 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:06:00,407 INFO L168 Benchmark]: Toolchain (without parser) took 6418.68 ms. Allocated memory was 88.1 MB in the beginning and 155.2 MB in the end (delta: 67.1 MB). Free memory was 45.7 MB in the beginning and 109.9 MB in the end (delta: -64.2 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:00,408 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 63.3 MB in the beginning and 63.2 MB in the end (delta: 61.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:06:00,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.89 ms. Allocated memory is still 88.1 MB. Free memory was 45.5 MB in the beginning and 39.5 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:00,409 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.61 ms. Allocated memory is still 88.1 MB. Free memory was 39.3 MB in the beginning and 37.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:00,409 INFO L168 Benchmark]: Boogie Preprocessor took 54.23 ms. Allocated memory was 88.1 MB in the beginning and 127.9 MB in the end (delta: 39.8 MB). Free memory was 37.4 MB in the beginning and 106.3 MB in the end (delta: -68.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:00,410 INFO L168 Benchmark]: RCFGBuilder took 626.29 ms. Allocated memory is still 127.9 MB. Free memory was 106.2 MB in the beginning and 85.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:00,411 INFO L168 Benchmark]: TraceAbstraction took 4882.29 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 85.0 MB in the beginning and 112.0 MB in the end (delta: -27.0 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:00,411 INFO L168 Benchmark]: Witness Printer took 55.78 ms. Allocated memory is still 155.2 MB. Free memory was 112.0 MB in the beginning and 109.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:00,415 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 63.3 MB in the beginning and 63.2 MB in the end (delta: 61.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 716.89 ms. Allocated memory is still 88.1 MB. Free memory was 45.5 MB in the beginning and 39.5 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.61 ms. Allocated memory is still 88.1 MB. Free memory was 39.3 MB in the beginning and 37.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.23 ms. Allocated memory was 88.1 MB in the beginning and 127.9 MB in the end (delta: 39.8 MB). Free memory was 37.4 MB in the beginning and 106.3 MB in the end (delta: -68.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 626.29 ms. Allocated memory is still 127.9 MB. Free memory was 106.2 MB in the beginning and 85.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4882.29 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 85.0 MB in the beginning and 112.0 MB in the end (delta: -27.0 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. * Witness Printer took 55.78 ms. Allocated memory is still 155.2 MB. Free memory was 112.0 MB in the beginning and 109.9 MB in the end (delta: 2.1 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 1035 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 97 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 3181 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 135 SDtfs, 121 SDslu, 165 SDs, 0 SdLazy, 97 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3193 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...